Seat Posts

The correct seat post diameter is essential. To check which size you need (assuming you have your old post), pretty well every post is stamped with the diameter just under the minimum insertion line (in the bottom 100mm or so). If measuring a post or frame, use vernier calipers and take several measurements at different angles to allow for distortion.

Kalloy Seat Post Silver 400mm

Kalloy Top Nut for Seat Post

RockShox Collar for Reverb Post

Seat Post 22.2mm x 430mm

Suspension Post 30.9 x 350mm

XTech Seat Post 400mm Black

XTech Seat Post 400mm Silver 27.4