GravityDropper

37938 Mission Vista Drive

Polson, Mt 59860

I have been riding the post for years now and I can safely say that it is the best upgrade I have done to my trail bike in 2 years. The adjustment is perfect for steep climbing and descending. This post is the Downieville secret weapon or as I call it the Lopes crusher. This is no informercial, it’s the real deal. It really works.. Mark Weir , Pro (USA)

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350, 375, 400, and 425 mm

3 inch drop posts available in

275, 300, 325, 350, 375  and 400mm

2 inch drop posts available in

275, 300, 325, 350, and 375 mm

Seatpost is 27.2 diameter. Shims available for 28.6, 29.2, 29.4, 29.6, 29.8, 30.0, 30.2, 30.4, 30.8, 30.9 common, 31.6 common, 31.8, 34.9 We also make a 26.8 and 27.0 mm post.

Your seapost diameter can usually be found on the lower portion of the Seatpost.

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1. Check to see if your cable has pulled out of the set screws (item #29) in the switch arm.  Remove the switch lid on the handlebar and look at the switch arm.  The arm should rest against the switch body.  If you have extra cable, loosen the set screws and use a pair of plyers to remove the excess slack.  Be careful not to pull too much as this would cause the post not be able to fully lock into a position.
2. If you dont have excess slack, check to see if you have too tight of a bend or angle in your cable housing.  Staighten as much as possible.
3. It also could be that your cable is sticky from mud or dust causing the switch not to full return.  If the above suggestions didn’t fix your problem, we recommend purchasing a REBUILD and sending the post back to Gravitydropper or installing a new cable and housing.  Instructions can be found in the maintenance section.

Why Lower?

Why Raise?

• Most efficient position for climbing and level terrain.
• To deliver maximum power to the pedals, you must have your seat in a raised position. Many bikers compromise their seat height for more technical riding.   With Descenderpost, there is no compromise. Seat High for power and climbing. Seat low for descending.

How It Works?

• Reach down and pull the knob located on the front of the post and sit down. Your seat will lock in the lower position.  To raise, while sitting, pull the knob and sit up.
• The Descender Post design is mechanical. There are no seals to blow and no oil to leak.
• With Gravitydropper Descender, it takes a fraction of a second to raise or lower your seat.

Specifications

• The Descender is also made in the USA from CNC’d 7075 T-6 aircraft aluminum. This high grade aluminum allows for strong lightweight units.
• Weight. The whole seat post, including all hardware is approx 365 grams.
• Sizes available- 26.8, 27.0 and 27.2 Shims available for larger Posts including 28.6 , 29.2, 29.8, 30, 30.2, 30.4, 30.8, 30.9, 31.6, 31.8, and 34.9
• Standard Length is 350 mm. Shorter lengths of 275, 300 and 325 mm as well as longer lengths of 375 and 400mm are available.
• In addition to standard 3inch drop, 2inch and 4 inch are now available. Each available in multi-position, UP, Down 1 inch, and Fully down.
• Minimum exposed post.  You would need to have 7 1/4 of exposed post in your up position to run a 4 inch drop post.  6 1/4 to run a 3 inch drop and 5 1/4 to run a 2 inch drop.  You can put your existing post in your normal UP position and measure from where the post goes into the bike to the seat rails.

Benefits

• Improve your technical skills immediately!
• You can get back behind the seat!
• Descend faster and with more control.
• Lowers your center of gravity.
• Increase stability and balance.
• Excellent for ledges, loose turns, technical downhills, and fast descents.
• Great for tight single track.
• Reduce number of crashes
• Faster climbing and flat terrain.
• Start out easier on steep climbs.
• Get on your bike easier on steep descents.

Price

The GravityDropper allows you to go faster. This applies to both descending and climbing. The extra control you gain while descending can be translated into speed.   The classic has a proven reliable track record making it an excellent choice.

Why Lower?

Why Raise?

• Most efficient position for climbing and level terrain.
• To deliver maximum power to the pedals, you must have your seat in a raised position. Many bikers compromise their seat height for more technical riding.
• With the GravityDropper Classic,  there is no compromise.  Seat high for power and climbing and seat low for descending and control.

How It Works?

• Approach the descent, push the switch on your handlebar, and sit on the seat. Your seat is now locked in the lower position.   To raise, push the switch and sit up.
• The GravityDroppers Patent Pending design is mechanical. There are no seals to blow and no oil to leak. It is an enclosed unit which minimizes dirt and mud entering.
• Moving from one position to another is done in a fraction of a second.

Specifications

• Made in the USA from CNC’d 7075 T-6 aircraft aluminum. This high grade aluminum allows for strong lightweight units.
• Weight. The whole seatpost, including all hardware, switch and cables is 510 grams. The benefits gained from the GravityDropper far surpass the tiny amount of non-rolling weight you might add..
• Sizes available- 26.8, 27.0 and 27.2 Shims available for larger Posts including 28.6 , 29.2, 29.8, 30.0, 30.2, 30.4, 30.8, 30.9, 31.6, 31.8 and 34.9
• Standard Length is 350 mm. Shorter lengths of 275,300,325,mm and longer lengths of 375,400 are available.
• Available in 2inch, 3inch standard and 4inch drop. Also available in a multiposition. (UP, Down 1 inch, Fully down)
• Minimum exposed post.  You would need to have 7 1/4 of exposed post in your up position to run a 4 inch drop post.  6 1/4 to run a 3 inch drop and 5 1/4 to run a 2 inch drop.  You can put your existing post in your normal UP position and measure from where the post goes into the bike to the seat rails.

Benefits

• Improve your technical skills immediately!
• Descend faster and with more control.
• Lowers your center of gravity.
• Increase stability and balance.
• Excellent for ledges, loose turns, technical downhills, and fast descents.
• Great for tight singletrack.
• Reduce crashes
• Faster climbing with seat in optimal climbing position
• Start out easier on steep climbs.
• Get on your bike easier on steep descents.

Price

Seat Post Review (spanish)
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]]> http://gravitydropper.com/seat-post/feed/ 0 http://gravitydropper.com/constructed-of-high-quality-material-and-craftmanship/ http://gravitydropper.com/constructed-of-high-quality-material-and-craftmanship/#comments Fri, 17 Apr 2009 18:22:17 +0000 spittenger http://gravitydropper.com/constructed-of-high-quality-material-and-craftmanship/ GravityDropper uses high grade aircraft aluminum consisting mostly of 7075 t-6.  This allows us to build a dependable on the fly adjustable bicycle seat post.

Owners Manual – Download Manual as PDF

Warning!

*Seat post has strong compression spring.   When it is in the compressed position, pulling the pin will cause post to expand rapidly into the “raised position.”

* Make sure to use the enclosed rubber boot to keep mud and water out.  When storing for extended periods, keep in the up position.

Mounting instructions

1. Remove existing post from the bike.  Clean and check for deformations and burrs.
2. If your bike does not use a 27.2 size seat post.  Insert proper shim.
3. Insert Descenderpost into bike.   The post can be positioned with unit facing forward or backward.
4. Install seat on the post and tighten slightly
5. Position the seat height to desired height and tighten seat-clamp.   Make sure you have inserted the post at least 3.0 inches into the seat tube on your bicycle so as not to damage post or bicycle frame.

Operating your seat post

Warning: Do not attempt aggressive riding until you are totally familiar with the operation and function of the seat post. Note:  You will become familiar with this simple procedure quickly with practice.

Warning: Descenderpost requires you to remove your hand from the handlebars if you attempt to operate while riding.  This should be performed by riders only in situations where it is safe to remove your hand. (Similar to removing hand for reaching for water-bottle).

To lower seat post- Pull knob and hold while pushing or sitting down on the seat, release knob when seat begins to lower.   Seat is now locked in down position.

To Raise seat post- If sitting on seat, pull knob, and standup.  As seat rises, release knob.  If standing, Pull knob and seat will rapidly rise into upward position.   Warning:  Make sure you are positioned far enough above the seat so as not to be contacted by the rising seat.   Seat will now be locked in up position.

Cleaning and Maintenance

Periodic cleaning and lubrication is recommended.

1. With post in the up position, lift lower portion of boot and remove top cap (Item52)
2. Pull  knob (and hold)(Item 170) , while you still have the knob pulled,  gently pull out inner post
3. Thoroughly clean and re-lube.  Use a light lithium grease
4. Position inner post in outer tube lightly,  then pull knob (and hold)  gently push the inside tube into position in the outer tube.  Release knob and then tighten cap.

Complete Overhaul

1. Remove seat post from bicycle
2. Remove bottom cap nut of seat post (Warning:  Seat post has a spring inside and is under pressure, keep face away and remove cap slowly)
3. Clean dirt and replace any internal parts as needed. Kits are available from manufacturer.
4. Re-assemble and install on bike

Trouble Shooting

Post Sticky when moved up and down

1. Make sure you didn’t over tighten your seat clamp
2. See cleaning and maintenance
3. Increase pressure by adjusting bottom cap nut (Item 68) by removing post and turning clockwise

Pin will not engage

1. Remove bottom of Boot to reveal top cap.  Make sure cap (Item 52)  not too tight or too loose

For other questions, e-mail Sales@gravityDropper.com

Replacement Parts/ Warranty

Replacement parts are available from the factory or local bike shop.

Descenderpost has a 6 month  limited warranty against component defects.  Components that have been damaged or neglected by the purchaser are not covered under warranty.   Prior authorization is required prior to returning for warranty replacement.  Shipping and handling charges are not covered by the warranty.

Refer to assembly drawing for component description

Owners Manual – Download Manual as PDF

Warning!

*Seat has strong compression spring. Do not actuate post until installed on bike.

*Magnetic Warning- No person with pacemaker should come in close contact. Computer disks, credit cards or any other items affected by magnetic fields will be damaged if they come in contact with the post.

*GravityDropper should be installed by qualified bike mechanic

* Make sure to use the enclosed rubber boot to keep mud and water out. When storing for extended periods, keep seat post in the up position

Mounting instructions

1. Remove existing post from the bike. Clean and check for deformations and burrs.
2. If your bike does not use a 27.2 size seat post. Insert proper shim.
3. Insert GravityDropper post into bike. The post can be positioned with unit facing forward or backward.
4. Install seat on the post
5. Now position the seat height to desired height for your upper position and tighten seatpost clamp.
   Make sure you inserted the post at least 3 inches into the seat tube on your bicycle so as not to damage post or bicycle frame.
6. Install thumb switch on handlebar. (Make sure you ran the cable properly)
7. Install plastic cable holders (included) to top tube and fasten the small zip ties.
8. To get the seatpost to compress, You must press the switch first (and hold) THEN push down on the seat (In that order)

Note: If cable housing is too long, remove cable from thumb switch and see (Item 12) (Under Changing Cable instructions)

If cable housing is too short, see Changing Cable instructions

Operating your seat post

Warning: Do not attempt aggressive riding until you are totally familiar with the operation and function of the seat post. Note: You will become familiar with this simple procedure quickly with practice.

To lower seat post- Push (and hold) thumb switch, unweight seat and then sit down. As seat is moving down, release thumb switch. Seat is now locked in down position.

To Raise seat post- If sitting on seat, push (and hold) thumb switch, and standup. As seat rises, release thumb switch. If standing, push (and hold) thumb switch, tap seat with the buttocks and release thumb switch. Seat will now be locked in up position.

Changing Cable (Note: This should be performed by qualified mechanic)

1. Remove thumb switch lid (Item 64)
2. Loosen the two 0/40 cable set screws in switch arm. Use a .050 hex wrench. (Item 29)
3. Remove cable from the thumb-switch
4. Remove the two cap screws on seat post body and remove lid. (Item 134 and 132)
5. Remove the old cable from the mag bar (Item 140). There should be a slot to slide the cable out. Note: Pre- 2008 posts require you to remove lower magnet from mag-bar to remove cable. New mag bars with the cable slot can be ordered from the manufacturer. This makes cable changes much easier.
6. Install new cable
7. Fasten lid (Item 132)
8. Cut cable housing to desired length and install over cable.
9. Cut cable leaving ½ inch exposed and install into thumb switch and arm
10. Tighten set screws and check for proper operation (Item 29)
11. Install thumb switch lid

Cleaning and Maintenance

Periodic cleaning and lubrication is recommended.

1. With post in the up position, lift lower portion of rubber boot and remove top cap (Item 52)
2. Press switch (and hold) gently pull out inner post
3. Thoroughly clean and re-lube. Use a light lithium grease
4. press thumb switch (and hold) reinstall inner tube and tighten cap

Complete Overhaul

1. Remove seat post from bicycle
2. Remove bottom cap nut of seat post (Warning: Seat post has a spring inside and is under pressure, keep face away and remove cap slowly)
3. Clean dirt and replace any internal parts as needed. Kits are available from manufacturer.
4. Re-assemble and install on bike

Trouble Shooting

Post will not engage or disengage in Upper position or falls from upper position when riding.

1. Lift bottom of Rubber Boot to reveal top cap (Item 52), Loosen ½ turn. This cap must be in the right place. It is not necessarily a matter of is it tight or not. If the cap is too loose, you will have quite a bit of slop up and down when you push down on your seat.

Post will not engage in Lower position

1. Make sure Upper portion of rubber boot is located in the slot or groove just below the seat rails.

Post will not engage in the up AND down position or is has problems disengaging from BOTH positions

1. Something is causing your pin not to work properly.
2. Make sure you don’t have cable slack caused from cable stretch in the thumb switch.
3. While in the UP position, remove black lid from seatpost to see if pin (item 88) has dirt on it. To remove pin, push switch part way and pull top of mag bar (item 140) back.

Post Sticky when moved up and down

1. See cleaning and maintenance
2. Make sure you didn’t overtighten your seat clamp that holds your seatpost in your bike.
3. Increase pressure of bottom cap nut by turning clockwise (On bottom of seapost, Item 68)

Thumb switch not returning all the way.

1. Your cable is sticking for some reason. You could have dirt built up or kinked the cable. You can try to increase the tension set screws (item 156). Located on bottom of unit attached to the post.
2. Otherwise replace the cable.

For other questions, e-mail Sales@gravityDropper.com or call 406-883-3555

Replacement Parts/ Warranty

Replacement parts are available from the factory or local bike shop.

GravityDropper has a 6 month limited warranty against component defects. Components that have been damaged or neglected by the purchaser are not covered under warranty. Prior authorization is required prior to returning for warranty replacement. Shipping and handling charges are not covered by the warranty.

Refer to assembly drawing for component description

Owners Manual – Download Manual as PDF

Warning!

*Pushing switch when post is in the down position will cause it to rise quickly to the up position. Do not operate until the seat is installed on the Seatpost and the post installed on the bike. Always make sure nothing is in the way of post as it goes from the DOWN to the UP position. This can cause serious injury.

*Seat has strong compression spring. Do not remove bottom cap nut (item 68)

*The Turbo Gravitydropper should be installed by qualified bike mechanic

* Make sure to use the rubber boot that’s installed on your post. It is essential to keep mud and water out. When storing for extended periods, keep seat post in the up position

Mounting instructions

1. Remove existing post from the bike. Clean and check for deformations and burrs.
2. If your bike does not use a 27.2 size seat post. Insert proper shim.
3. Insert Turbo seat post into bike. The post can be positioned with unit facing forward or backward. Running backwards may require a longer cable.
4. Attach seat on the seat post
5. Now position the seat height to desired height for your upper position and tighten seat post clamp. Make sure you inserted the post at least to the limit line on the seat post or the minimum required by your bicycle manufacturer (whichever is greater) so as not to damage post or bicycle frame.
6. Install thumb switch on handlebar. (Make sure you ran the cable properly) If you cable is too long, see Changing Cable instructions skipping item 6 and 8
7. Install plastic cable holders (included) to top tube and fasten the small zip ties.

Operating your seat post

Warning: Do not attempt aggressive riding until you are totally familiar with the operation and function of the seat post. Note: You will become familiar with this simple procedure quickly with practice.

To lower seat post- Push (and hold) thumb switch, un-weight seat and then sit down, (In that order) As the seat is moving down, release thumb switch; Seat is now locked in down position.

To Raise seat post- If sitting on seat, push (and hold) thumb switch, and standup. As seat rises, release thumb switch. If standing, (first make sure you are clear of seat as it will rise rapidly into up position), push thumb switch. The switch will start easy, then feel harder just before post releases rapidly into up position. Release switch lever and the seat will now be locked in up position.

Changing Cable (Note: This should be performed by qualified mechanic) See schematic

1. Remove thumb switch lid (item #64)
2. Loosen the two 0/40 cable set screws in switch arm. Use a .050 hex wrench. (item #29)
3. Remove cable from the thumb-switch
4. Remove the two cap screws on seat post body (Item #334)
5. Gently pull pin mechanism from post. (Caution, do not do this if your inside tube has been removed (#22) The system has a spring and is under pressure.
6. Unscrew Knurling cap (item #408) and remove cable from pin. (you might need to hold with pliers or a vice as this is locktighted on.
7. Cut cable housing to desired length. Do not cut the cable yet.
8. Place Outside pin spring (#358) over pin (#288), then Spacer plate (item #412) Put the Turbo spring (#406) and then the knurling cap (#408) over the cable(#128) and insert into the pin (#288) Tighten Knurling cap (item #408) onto pin. Fit Turbo unit (item #332) over cable & replace Cap screws. (item #334) Refer to schematic as needed.
9. Place cable housing over the cable and cut cable leaving 18 mm (.7 inches) of cable sticking out of housing.
10. Thread cable end through switch (#24), tighten set screws (#29) and press switch arm (#82) to ensure that the cable does not slip or have any slack. Slightly bend excess end of cable up and away from edge of switch wall to prevent from hitting switch body housing)
11. Replace thumb switch lid (item #64)

Cleaning and Maintenance

Cleaning and lubrication is recommended if post getting sticky up and down.

1. With post in the up position, lift lower portion of rubber boot and loosen top cap (Item #52)
2. Press switch (and hold) gently pull out inner post. (Caution) Do not remove the pin (#288 while the inside tube is removed as this is under pressure)
3. Thoroughly clean and re-lube. Use a light lithium grease.
4. Press and hold thumb switch, insert inner tube and tighten cap (we suggest placing a small amount of lock tight on top cap before adjusting to proper tension). The top cap is key to proper post function. If top cap (item#52) is too tight, the pin will not release. If top cap (item#52) is too loose, there will be play in the top of post and the post may not engage in the down position.

Complete Overhaul

1. Remove seat post from bicycle
2. To change cable/housing refer to directions above.
3. Remove bottom cap nut (item #68) seat post (Warning: Seat post has a spring inside and is under pressure, keep face away and remove cap slowly) Also, Do not remove pin (#288 while the inside tube is removed (#22) unless the spring has been removed in
4. Clean dirt and re-assemble. Refer to schematic as needed. (Shim kits & replacement parts are available from manufacturer.)
5. If pin (item #88) is removed and cleaned, use SMALL amount of lube before replacing.
6. Re-assemble and install on bike

Trouble Shooting(The Seatpost is mechanical, this usually makes it quiet easy to fix any problems or issues you might be having)Please call us at 406-883-3555 or e-mail us at sales@gravitydropper.com.)

Seatpost won’t engage in the just the up position OR wont stay locked in the up position

1. Determine if the post is just sticking. (not coming all the way up) or if it is not engaging. If it is sticking, see Sticking post below;
2. If it is not engaging, then lift up the bottom portion of the protective boot and loosen item (#53) ½ turn. Now try the switch and see if it will engage. REPEAT until you feel a small amount of play up and down in the post. (push down on the saddle, and up pull up to feel for play) Once you feel play up and down, Loosening the cap doesn’t do any good.
3. Call customer service

Seatpost won’t engage in just the down position

1. If the post was functioning properly, and is engaging properly in the up position. Your protective boot has probably been dislodged from the upper ridge (#58)

Seatpost won’t engage in UP or Down position

1. You pin is not engaging in holes(#102) properly, try removing cap screws for Turbo(#334) and then pin (#228) to see if sticky
2. You cable and cable housing could be sticky from age or being kinked. Install a new cable
3. Call for customer service

Post Sticky when moved up and down

1. Make sure you didn’t over tighten your seat clamp
2. See cleaning and maintenance
3. Increase pressure by turning clockwise bottom cap nut (On bottom of seatpost, Item #68) Note: if you increase too much, the post wont be able to engage in the down position.

Cable is not the right length

Refer to changing cable directions above. If cable is too long, remove switch arm &
Shorten cable to desired length. If cable is too short replace cable.

For other questions, e-mail Sales@gravityDropper.com or call 406-883-3555

Replacement Parts/ Warranty

Replacement parts are available from us at Gravitydropper or your local bike shop.

The GravityDropper Turbo has a 6 month limited warranty against component defects. Components that have been damaged or neglected by the purchaser are not covered under warranty. Prior authorization is required prior to returning for warranty replacement. Shipping and handling charges are not covered by the warranty.

Refer to assembly drawing for component description

Hey there, Yes I have had a run with the seat pole…… I am truly amazed how easy it all works. At first I thought the difference in height would not be enough but it surely does the job… You are going to make a lot of people happy with this seat pole, makes riding that much more fun especially on a cross country / free-ride bike. Thanks again for sending it over, I am stoked that I have one. Cheers”, Wade Bootes, (Pro) Australia

I recently used the gravity dropper at my top ten finish in the 24 Hours Of Adrenalin Solo World Championships in Whistler BC. Amazing! As the night goes on and you begin to get careless it was nice to instantly be able to drop the seat in tight corners or on narly decents. What really helped out was the ability for me to forget the pain in my legs and play with my cool seatpost! Other rides thought I was totally teched out! I cannot imagine another 24 hour race without the dropper, it guarantees me a safe smooth ride to a top finish! Sweet!- Heather Mosley – ranked 9th pro elite female in the world, 1st east coast pro elite female, 24 hour solo mounatin biking, Specialized Sponsored.

The Gravitydropper is a perfect after-market accessory for any mountain biker  with one click as easy as shifting a gear, your seat drops out of your way or back into place.  No more compromising situations (which we all encounter many times on every single ride), where the seat is too high or too low.  I love it! Hans Rey,   Pro Extreme and Freeriding Pioneer, Trials World Championa and Mountain Bike Hall of Famer. Also check out Hans Rey’s website where you can  read about his latest Copper Canyon adventure.   www.hansrey.com

1. Proper positioning of the Top Cap #52 is important for the seatpost to function correctly.  It must not be too tight or too loose.
2. Put the seatpost in the up postition
3. Push straight down on the seat.  If the top cap is too loose, you will have some play up/down and hear a clicking noise.
4. If there is play, slowly tighten the Top Cap until there is just a small small amount of play.  If you tighte this too much, the post will not engage properly in the UP position, or could get stuck in the UP position, or fall from the UP position while riding
5. Put th rubber boot back down over the top cap and test the post to see if it is functioning properly.

1. First check to see if you have any up and down play in your post. To check, Push down on the seat. If you do not feel any play or hear a clicking noise, go to step 2. If you do have play and do hear a clicking noise, go to step 3.
2. Lift up the bottom portion of the rubber boot and loosen item (#52) ½ turn. Check for play up and down again and REPEAT until you feel just a small amount of play up and down in the post. If this did not resolve the problem, go to step 3.
3. Check to make sure the switch is working properly. Some cable stretch might have developed not allowing the pin to disengage. Remove the switch lid (item #64) on the handlebar, If you have cable slack in the switch body, loosen the set screws (item #29) with a .050 american allen wrench and pull the excess slack with pliers. Be careful not to pull too much as this will cause the post not to lock into any position.

1. Remove seat post from bicycle
2. To change cable/housing refer to directions above.
3. Remove bottom cap nut (item #68) seat post (Warning: Seat post has a spring inside and is under pressure, keep face away and remove cap slowly) Also, Do not remove pin (#288 while the inside tube is removed (#22) unless the spring has been removed in
4. Clean dirt and re-assemble. Refer to schematic as needed. (Shim kits & replacement parts are available from manufacturer.)
5. If pin (item #88) is removed and cleaned, use SMALL amount of lube before replacing.
6. Re-assemble and install on bike

1. Remove seat post from bicycle
2. To change cable/housing refer to directions above.
3. Remove bottom cap nut (item #68) seat post (Warning: Seat post has a spring inside and is under pressure, keep face away and remove cap slowly) Also, Do not remove pin (#288 while the inside tube is removed (#22) unless the spring has been removed in
4. Clean dirt and re-assemble. Refer to schematic as needed. (Shim kits & replacement parts are available from manufacturer.)
5. If pin (item #88) is removed and cleaned, use SMALL amount of lube before replacing.
6. Re-assemble and install on bike

1. Remove seat post from bicycle
2. To change cable/housing refer to directions above.
3. Remove bottom cap nut (item #68) seat post (Warning: Seat post has a spring inside and is under pressure, keep face away and remove cap slowly) Also, Do not remove pin (#288 while the inside tube is removed (#22) unless the spring has been removed in
4. Clean dirt and re-assemble. Refer to schematic as needed. (Shim kits & replacement parts are available from manufacturer.)
5. If pin (item #88) is removed and cleaned, use SMALL amount of lube before replacing.
6. Re-assemble and install on bike

Warning-Do not attempt aggressive riding until you are totally familiar with the operation and function of the seat post.    Note:  You will become familiar with this simple procedure quickly with practice.

To lower seat post- Push (and hold) thumb switch, un-weight seat and then sit down, (In that order)  As the seat is moving down, release thumb switch; Seat is now locked in down position.

To Raise seat post- If sitting on seat, push (and hold) thumb switch, and standup. As seat rises, release thumb switch.  If standing, (first make sure you are clear of seat as it will rise rapidly into up position), push thumb switch.  The switch will start easy, then feel harder just before post releases rapidly into up position.  Release switch lever and the seat will now be locked in up position.

1. With post in the up position, lift lower portion of rubber boot and loosen top cap (Item #52)
2. Press switch (and hold) gently pull out inner post. (Caution) Do not remove the pin (#288 while the inside tube is removed as this is under pressure)
3. Thoroughly clean and re-lube. Use a light lithium grease.
4. Press and hold thumb switch, insert inner tube and tighten cap (we suggest placing a small amount of silicone or lock tight on top cap before adjusting to proper tension). The top cap is key to proper post function. If top cap (item#52) is too tight, the pin will not release. If top cap (item#52) is too loose, there will be play in the top of post and the post may not engage in the down position.

1. Make sure you didn’t over tighten your seat clamp (bolt that holds your seatpost in place.)
2. See “Periodic lube of inside tube” under maintenance section…unless you just changed your shims (item #42) out on the inside tube or changed the inside tube.
3. (this procedure can only be done if you have a 3″drop post 325mm or longer or a 4″ drop 375mm or longer) You could increase the tension of the spring pressure by turning clockwise bottom cap nut (On bottom of seatpost, Item #68) Note: It is possible that if you increase too much, the post wont be able to engage in the down position. Just check to see that it still engages in the down position after you turn clockwise. If it won’t engage in the down position, just back out the bottom cap nut until it will engage.

1. Read instructions all the way thru, you must perform all steps for the seatpost to function correctly. Note: It is recommended that you watch the video.
2. Remove old shims using pliers. Grab bottom and leverage up
3. If you are installing a multi-position post, remove portion of the top.
4. Use a hammer to hammer the new shims into place. Make sure positioned right and start at he bottom. (The groove should be facing up).
5. Use a hole punch to fit the top part of the shim so flush and the bushing slides over easy.
6. Use a razorblade or exacta-knife to take off any excess plastic on the 2 sides.
7. Put a small amount of grease (lithium works fine) on the shim and insert into the seapost. ** note for Gravitydropper, you will have to press the switch (and hold).
8. Slide the seatpost up and down. It might still be tight. If so, be careful not to do too much but go to step 5 again. (Keep taking a little bit until the post slides pretty freely) * not too much or you will get some side to side wiggle in the seatpost when you are finished.
9. **When the post slides up and down smoothly, Partially put on the black cap. Maybe about 5 or 6 full turns. Then while holding the switch (KEEP holding the switch) let the post slam into the up position about 4 or 5 times. This is sliding the shims you installed into the full bottom position and a very important step!!
10. Now, how much and where the top cap is tightened controls where the hole is in the inside tube and if it matches the pin. Slowly tighten the cap until slightly tight.
11. TEST the switch and see if it unlocks the pin and the seatpost pushes down. If it does not activate the switch, loosen the cap a little bit until the switch works. If It does, keep tightening the cap until tight, each time you test to make sure the switch is still working. If it stops working, back off the cap a little bit. A person might put a little lock tight on the threads to hold in place if cap ever comes loose.