Trek Carbon Seat Mast Cap amfib_lite_headband 4mm to suit most common

4mm to suit most common seat tube diameters

Slayer SS (2013–2014)

Giant Trance Advanced Pro 27

- Flashing LED indicates low battery in paired lights

No matter if you prefer gravel

Trek Carbon Seat Mast Cap amfib_lite_headband 4mm to suit most commonOffered 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