Product Description
The Bontrager Carbon Seatmast Cap is a genuine Trek replacement component for compatible Trek road bikes using Trek’s seatmast system.
Constructed from lightweight carbon fiber and finished in Matte Black, this version includes the rotary saddle clamp / head hardware, making it a more complete replacement assembly.
Choose from multiple length and setback options to match your existing setup or adjust saddle height and position.
Available Variations
| Seatmast Cap Size |
Length |
Offset |
Finish |
| 135mm x 5mm |
135mm |
5mm |
Matte Black |
| 135mm x 20mm |
135mm |
20mm |
Matte Black |
| 175mm x 20mm |
175mm |
20mm |
Matte Black |
Key Features
- Genuine Trek / Bontrager replacement seatmast cap
- Lightweight carbon construction
- Matte Black finish
- Includes rotary saddle clamp / head hardware
- Multiple length and setback options
- Single-bolt saddle adjustment system
- Allows precise saddle angle and fore/aft positioning
- OEM replacement for compatible Trek seatmast-equipped road frames
Specifications
- Brand: Bontrager / Trek
- Product Type: Carbon Seatmast Cap
- Material: Carbon Fiber
- Color: Matte Black
- Length Options: 135mm / 175mm
- Offset Options: 5mm / 20mm
- Saddle Adjustment: Single Bolt / Rotary Head
- Recommended Torque: 6-8 Nm
Compatibility
Designed for compatible Trek road bikes using this generation of Trek seatmast system, including applicable:
- Trek Domane SL / SLR, approximately 2012-2019
- Trek Émonda SL / SLR
- Trek Madone 5 / 6 / 7 Series, approximately 2010-2015
Fitment can vary by model year and frame generation. Please compare your existing seatmast cap dimensions and confirm the required length and offset before ordering.
Included
- One Bontrager carbon seatmast cap in the selected size
- Rotary saddle clamp / head hardware for 7x7mm rails
Condition
- New
- Non-retail packaged
- Matte Black finish
