Bontrager Round Seat Mast Cap Seat Post

Bontrager Round Seat Mast Cap Seat Post
4 reviews
Length Seatpost
Please select: Length Seatpost
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RRP 219,99
159,99
  • Ordered before 22:00, delivered tomorrow
  • Free tracked delivery

Try in store

Try in store

A large part of our assortment is in stock in our stores and ready to try, fit, and experience without an appointment.

Our full assortment is available online. You can order and pay for products online and have them delivered for free to one of our Superstores. This way, you can try everything out. Not satisfied? You can return it to the store free of charge and receive a refund.

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Pros & Cons

Pros & Cons

  • This seat mast allows you to replace a damaged seatpost.
  • Not available in silver while the original does come in silver.
Read more on what our customers have to say about this product

Specifications

Specifications

Brand Bontrager
Colour Black
Offset 20 mm
Weight 150 grams
Saddle Rails 7 x 7 mm
Material Carbon

The Bontrager Round Seat Mast Cap is a spare mast cap for Trek road bikes with a round seatpost. These are road bikes on which the seatpost doesn't 'disappear' into the frame, but instead slides over a round seat mast. This seat mast is made of a light carbon construction and has an aluminium seat post clamp.

Reviews

Reviews

5 / 5

Very satisfied

- Bart 1 July 2025

Handlebar stem is completely what I expected from it. Super quality

Pros & Cons

Correct price
Smooth delivery
Super quality
Automatic translation

5 / 5

Fast delivery top product

- Wouter 31 May 2021

Perfect replacement for the (for me) too short seatpost that came standard on my Trek Emonda.

Pros & Cons

Beautiful carbon colour
Featherweight
Very fast delivery
Automatic translation

5

Bart, 1 July 2025

Very satisfied

Handlebar stem is completely what I expected from it. Super quality

  • Correct price
  • Smooth delivery
  • Super quality
Automatic translation

5

Wouter, 31 May 2021

Fast delivery top product

Perfect replacement for the (for me) too short seatpost that came standard on my Trek Emonda.

  • Beautiful carbon colour
  • Featherweight
  • Very fast delivery
Automatic translation

Frequently bought together

Frequently bought together

All specifications

Brand
Bontrager

General

Colour
Black
Weight
150 grams
Material
Carbon

Sizes

Offset
20 mm
Saddle Rails
7 x 7 mm