Bontrager Carbon Seatmast Cap, Round Mast, Domane/Emonda/Madone

Overview

The Bontrager Carbon Seatmast Cap is engineered for precision fit and lightweight performance, making it an essential upgrade for Trek bike enthusiasts. Designed to seamlessly integrate with Trek's Domane, Emonda, and Madone series, this seatmast cap offers a perfect blend of strength and adjustability, ensuring a comfortable and customized riding experience.

Key Features

• Lightweight carbon construction for enhanced performance

• Single-bolt design for precise angle and position adjustments

• Compatible with Trek round seat mast systems without adapters

• Torque specification: 6–8 Nm for secure installation

• Genuine Trek component sourced directly from the manufacturer

• Does not include rotary head hardware

Specifications

Available in multiple sizes to accommodate different riding styles and preferences:

• 135mm x 20mm: 130g, ideal for added saddle setback and comfort

• 175mm x 20mm: 150g, offers extended height and increased saddle setback

• 175mm x 5mm: 150g, designed for more mast extension with a neutral saddle position

Compatibility: For Domane SL/SLR (2012–2019), all Emonda SL/SLR, Madone 5/6/7 series (2010–2015). Contact your local Trek dealer for any required installation hardware or additional parts.