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  • Trek Color-Matched Matte Carbon SeatMastCap & 7mm Round Ears
  • Trek Color-Matched Matte Carbon SeatMastCap & 7mm Round Ears
Overview

Genuine replacement parts

Trek-compatible seat mast cap.

Product details

  1. Ultra-light carbon construction
  2. Direct fit on all Trek road bikes with round seat masts
  3. Color matched for direct compatibility
  4. One bolt head design offers easy fore-aft and infinite angle adjustment
  5. Includes 7mm round saddle clamp ears, 10mm ears sold separately
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"A huge increase in frame stiffness and drop in weight"

"Lower weight and increase stiffness without the inherent drawbacks of fully integrated seatposts"

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"Unlike some other systems, it doesn’t require cutting to length"

"As well as saving weight, it can flex more than in a traditional system"

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"Lighter, stiffer and more integration"

"A new level of component integration for Trek"

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"A key element would have to be Trek’s version of the integrated seat mast"

"Trek took the extra step of making long and short seat mast tops available for personalized sizing"

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More options

Bontrager Line Elite 34.9 Dropper Seatpost

Bontrager Line Elite 34.9 Dropper Seatpost

$345.99 

Bontrager Line Elite 31.6 Dropper Seatpost

Bontrager Line Elite 31.6 Dropper Seatpost

$345.99 

Bontrager Line Dropper Seatpost

Bontrager Line Dropper Seatpost

$240.99 

NEW
Bontrager RSL 27.2 Seatpost

Bontrager RSL 27.2 Seatpost

$209.99 

NEW
Bontrager RSL 31.6 Seatpost

Bontrager RSL 31.6 Seatpost

$209.99 

Bontrager Pro Seatpost

Bontrager Pro Seatpost

$114.99 

Bontrager Elite Seatpost

Bontrager Elite Seatpost

$62.99 

Bontrager Comp Seatpost

Bontrager Comp Seatpost

$25.99 

Trek Pavement Suspension Seatpost

Trek Pavement Suspension Seatpost

$31.99 

Trek Color-Matched Carbon Seatmast Cap & 7mm Round Ears

Trek Color-Matched Carbon Seatmast Cap & 7mm Round Ears

$159.99 

NEW
Wolf Tooth Resolve 31.6 Dropper Seatpost

Wolf Tooth Resolve 31.6 Dropper Seatpost

$365.00 - $380.00 

Cane Creek eeSilk+ Carbon Suspension Seatpost

Cane Creek eeSilk+ Carbon Suspension Seatpost

$319.99 

Cane Creek eeSilk Carbon Suspension Seatpost

Cane Creek eeSilk Carbon Suspension Seatpost

$319.99 

Trek Madone SLR Color-Matched Carbon Internal Seatmast Cap

Trek Madone SLR Color-Matched Carbon Internal Seatmast Cap

$289.99 - $314.99 

Trek Madone SL Color-Matched Carbon Internal Seatmast Cap

Trek Madone SL Color-Matched Carbon Internal Seatmast Cap

$274.99 

Trek Domane SLR Color-Matched Carbon Internal Seatmast Cap

Trek Domane SLR Color-Matched Carbon Internal Seatmast Cap

$274.99 

Trek Madone Micro-adjust Aero Carbon Seatpost

Trek Madone Micro-adjust Aero Carbon Seatpost

$234.99 

Cane Creek eeSilk+ Aluminum Suspension Seatpost

Cane Creek eeSilk+ Aluminum Suspension Seatpost

$219.99 

Trek 2022 Speed Concept SLR Fixed Head Seatpost

Trek 2022 Speed Concept SLR Fixed Head Seatpost

$219.99 

Cane Creek eeSilk Aluminum Suspension Seatpost

Cane Creek eeSilk Aluminum Suspension Seatpost

$219.99 

Bontrager Speed Concept Carbon Seatpost

Bontrager Speed Concept Carbon Seatpost

$209.99 

Bontrager Speed Concept UCI-legal (Gen 1) Seatpost

Bontrager Speed Concept UCI-legal (Gen 1) Seatpost

$209.99 

Trek 2022 Speed Concept Seatpost w/Flippable Head

Trek 2022 Speed Concept Seatpost w/Flippable Head

$209.99 

Features
30-Day Unconditional Guarantee

30-Day Unconditional Guarantee

If for any reason you're not satisfied with a Bontrager or Trek aftermarket purchase, return the item, along with the original sales receipt to the original place of purchase within 30 days for an exchange or refund. Think of it as a 30-day test ride.

Learn more

Specs
Sizing Service Reviews
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