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> Bicycling Catalog > Parts > Seatposts > Bontrager > Trek Seat Mast Cap
Bontrager Trek Seat Mast Cap
  • Color: Black
  • Color: White


Trek Seat Mast Cap

Model # (11255)
Availability: Please select options
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Bontrager Trek 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.

Key features:

- 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
- 175mm and 135mm lengths
- 5mm and 20mm offsets
- Aluminum clamp



by PowerReviews
Option Barcode Manufacturer's Part Number Vendor Number
Black / N/A / 135mm / 20mm 00601479232598 512575 TRK-512575
Black / N/A / 135mm / 5mm 00601479232604 512576 TRK-512576
Black / N/A / 175mm / 20mm 00601479232574 512573 TRK-512573
Black / N/A / 175mm / 5mm 00601479232581 512574 TRK-512574
White / N/A / 135mm / 20mm 00601479232635 512579 TRK-512579
White / N/A / 135mm / 5mm 00601479232642 512580 TRK-512580
White / N/A / 175mm / 20mm 00601479232611 512577 TRK-512577
White / N/A / 175mm / 5mm 00601479232628 512578 TRK-512578
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