Trek Trek Color-Matched Matte Carbon Seat Mast Cap & 7mm Round Ears

Trek-compatible seat mast cap

Offered in white and black and a variety of lengths and offsets, the mast cap includes hardware compatible with round saddle rails only. 7x10mm carbon rail-compatible hardware sold separately.

*Ultra-light carbon construction
*One bolt head design offers easy fore-aft and infinite angle adjustment
*Compatible with all Trek road bikes with round seat masts
Aluminium clamp
*Includes 7mm round saddle clamp ears, 10mm ears sold separately