Bontrager Carbon Seatmast Cap - 135mm x 20mm Round Mast for Trek Domane, Emonda & Madone Bikes | Lightweight Carbon Fiber Seat Post Accessory for Road Cycling & Triathlon Training

This 135mm long carbon mast cap features a 20mm offset for added saddle setback and comfort. Ideal for road cyclists looking to dial in their fit on compatible Trek frames.

• Sleek, lightweight carbon construction

• Single-bolt clamping design allows precise angle adjustment

• Direct mount for Trek round seat mast systems

• Torque seatpost clamp bolt to 6–8 Nm

• Genuine Trek component purchased directly from the manufacturer

• Does not include rotary head hardware

• Weight: 130g

• Includes only what is pictured

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.