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RRP 149,99
119,99
- Ordered before 22:00, delivered tomorrow
- Free tracked delivery
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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.
Specifications
Specifications
| Brand | Bontrager | |
| Offset | 20 mm | |
| Weight | 150 grams | |
| Saddle Rails | 7 x 7 mm | |
| Material | Carbon | |
| Colour | Black |
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
Related product
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Compare the products above
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| Bontrager Round Seat Mast Cap | Ritchey WCS 1-Bolt Blatte | |
| 4 reviews | 6 reviews | |
| Length | 135 mm / 175 mm | 350 mm / 400 mm |
| Offset | 20 mm | 0 mm / 20 mm |
| Weight | 150 grams | |
| Saddle Rails | 7 x 7 mm | 7 x 7 mm |
| Material | Carbon | Aluminium |
| Colour | Black | Black |
| 119,99 | 89,95 | |
| This product | View product |