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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"id": "29052",
"name": "Bontrager Aeolus D3 3 TLR Factory Blemish Road Wheel",
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{
"id": "29055",
"name": "Bontrager Aeolus D3 5 Tubular Factory Blemish Road Wheel",
"price": "699.99",
"brand": "Bontrager",
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{
"id": "24648",
"name": "Bontrager Race XXX Lite Tubular Factory Overstock Tire",
"price": "59.99",
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"variant": "black",
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{
"id": "31118",
"name": "Bontrager R4 Tubular Factory Overstock Road Tire",
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"name": "Bontrager R4 Classics Tubular Factory Overstock Road Tire",
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{
"id": "23088",
"name": "Bontrager R4 Hard-Case Lite Factory Overstock Tire",
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"brand": "Bontrager",
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{
"id": "31109",
"name": "Bontrager Speed Concept Mono Ergo Factory Overstock Handlebar Extensions",
"price": "80.0",
"brand": "Bontrager",
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{
"id": "31113",
"name": "Bontrager Montrose Pro Factory Overstock Bike Saddle",
"price": "80.0",
"brand": "Bontrager",
"category": "Factory overstock",
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"list": "More Options",
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"id": "24630",
"name": "Bontrager Affinity Pro Carbon Factory Overstock Bike Saddle",
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"brand": "Bontrager",
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{
"id": "31122",
"name": "Bontrager DT240 Campagnolo 11-Speed Factory Overstock Freehub Body",
"price": "60.0",
"brand": "Bontrager",
"category": "Factory overstock",
"variant": "black",
"list": "More Options",
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{
"id": "31112",
"name": "Bontrager Montrose Elite Factory Overstock Bike Saddle",
"price": "50.0",
"brand": "Bontrager",
"category": "Factory overstock",
"variant": "white",
"list": "More Options",
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{
"id": "24627",
"name": "Bontrager Serano RL Factory Overstock Road Bike Saddle",
"price": "45.0",
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"name": "Bontrager Affinity Elite inForm Factory Overstock Bike Saddle",
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"category": "Factory overstock",
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"list": "More Options",
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{
"id": "24637",
"name": "Bontrager RXL 7 Degree Factory Overstock Stem",
"price": "25.0",
"brand": "Bontrager",
"category": "Bike stems & seatposts",
"variant": "white",
"list": "More Options",
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{
"id": "31114",
"name": "Bontrager Rhythm Pro Direct Mount Factory Overstock Stem",
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"brand": "Bontrager",
"category": "Factory overstock",
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"list": "More Options",
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"id": "24615",
"name": "Trek Madone Factory Overstock Top Half Headset",
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"list": "More Options",
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"name": "Trek ABP Classic Factory Overstock Skewer",
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"id": "31120",
"name": "Bontrager Lightweight Presta Valve Factory Overstock Tube",
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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.
