Changing the elastomers on your REDSHIFT Shockstop Pro Suspension Seatpost RT can refresh your ride. Here's how, based on the instruction manual:
Removing the Rebound Elastomer:
- Use a 2.5mm hex wrench to tighten the rebound elastomer set by turning it clockwise until the suspension mechanism moves enough for the rebound elastomer to spin freely.
- Rotate the rebound elastomer until the open end is visible from the side.
- Press sideways on the rebound elastomer from the open end to pop it off the set and out of the linkage. Be careful not to lose it. A small hex wrench or thin tool might help.
- Once the rebound elastomer is removed, loosen the rebound elastomer set by turning it counter-clockwise until the set is no longer visible between the linkages. If you can push the suspension mechanism up until the two linkages are touching, you've loosened it enough.
Removing the Front Lower Shaft:
- Use a 2.5mm hex wrench to loosen the lower front shaft set by turning it counter-clockwise at least two full turns. You may need to push the suspension mechanism down to make the set more accessible.
- Press the lower front shaft out. A thin tool like a pen or pencil might help. Depending on your saddle, you might need to remove it to access the seatpost's internal parts.
Removing the Internals:
- Pull upwards on the ball and socket joint. The elastomers may come out with it; if not, turn the seatpost upside down and lightly tap it to shake them out. Note that grease might cause the elastomer end caps to stick together and to the bottom of the ball and socket assembly.
- Ensure no grit or dirt gets into the seatpost. Clean and re-grease the inside surface if necessary.
Reinstalling the Internals:
- If not already greased, apply grease to all surfaces of the elastomers, including the top and bottom end caps.
- Install the elastomers inside the post. If using two different durometer elastomers, put the softer one in first, followed by the stiffer one. Both must be installed for the seatpost to function properly.
- Clean and re-grease the bottom and outer diameter of the socket joint (the surface that runs along the inside of the post).
- Install the ball and socket joint so that the half-round cutout engages with the lower linkage bushing.
- Rotate the entire mechanism until the lower linkage shaft hole lines up with the holes in the post.
- Ensure the half-round cutout on top of the ball and socket joint engages with the bushing at the bottom of the lower linkage.
- Reinstall the lower front pivot shaft with light hand pressure.
- Tighten the lower front shaft set and torque it to 4Nm.
Reinstalling the Rebound Elastomer:
- Tighten the rebound elastomer set until the linkages are separated enough to install the rebound elastomer freely.
- Install the rebound elastomer over the set. Slightly bending the elastomer may help.
- Loosen the rebound elastomer set until the set is no longer causing the suspension mechanism to move. When looking at the front of the linkage, the top of the set should be just 1 or 2 turns below the face of the linkage.
For more details or clarifications, please consult the original instruction manual.
