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.
Product details
Ultra-light carbon construction
Direct fit on all Trek road bikes with round seat masts
One bolt head design offers easy fore-aft and infinite angle adjustment
Does not include saddle clamp ears - 7mm round and 10mm oval ears sold separately
Go green and save green - Zero packaging means zero waste and zero extra cost
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"name": "Bontrager R4 Aero Factory Overstock Road Tire",
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"name": "Bontrager Serano RXL Carbon Factory Overstock Road Bike Saddle",
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"price": "60.0",
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"name": "Bontrager Pro Factory Overstock Seatpost",
"price": "60.0",
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"category": "Factory overstock",
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"list": "More Options",
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"id": "31115",
"name": "Bontrager Line Pro Factory Overstock Stem",
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"brand": "Bontrager",
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If for any reason you're not satisfied with a Bontrager 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
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, and materials.
Weights are based off Trek pre-production products at time of publication. Weights may vary in final production.
