[cmeride]

Hi there, just picked up a used Sensor and i know its a 34.9 seatpost but do you have to use a shim for a rockshox reverb dropper post ? I dont see any mfg's out there making a 34.9 dropper post ? Or am i wrong ?

 

[NytrostarSS]

34.9 is the diameter of the outer edge of your seat tube I believe. Your seatpost CLAMP is 34.9, your seatpost is likely 31.6, which would be the inside diameter of your seat tube.. I don't own a sensor but my zaskar is this way.

 

[GTDanny]

New GTs are different, the seatpost diameter is huge!

From the specs:
Seat Post: RockShox Reverb Stealth, 34.9mm, 125mm drop
Seat Clamp: All Terra Alloy Bolt-On, 38.1mm

cmeride: the Reverb is available in the 34.9mm size. Not sure where you're from but I've seen them at  Chain Reaction Cycles | MTB | Road | TRI | Run before

 

[GTDanny]

For some reason sram don't have the 34.9mm option listed on the product page, but there's information about it here:

RockShox Reverb Updates | SRAM

 

[ska todd]

The MY14 Sensor & Force both use a 34.9mm post (38.1mm clamp). Droppers are available from RockShox and KS in this size (and are used oem on higher end models). If you can't find one you can use a 31.6mm post and shim it. Shims are available thru QBP that will go 34.9>31.6.

-ska todd

 

[raelx]

Shims are available thru QBP that will go 34.9>31.6.

QBP actually doesn't carry shims this big. USE make them and they are very nice anodized aluminum. Looks lke Chainr Reaction stocks them.
USE Aluminium Shim | Chain Reaction Cycles