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
- One bolt head design offers easy fore-aft and infinite angle adjustment
- Compatible with all Trek road bikes with round seat masts
- Aluminium clamp
- Includes 7mm round saddle clamp ears, 10mm ears sold separately
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
if (typeof dataLayer !== "undefined") {
dataLayer.push({
"ecommerce": {
"currency": "CAD",
"impressions": [
{
"id": "32843",
"name": "Bontrager Line Elite 34.9 Dropper Seatpost",
"price": "449.99",
"brand": "Bontrager",
"category": "Bike stems & seatposts",
"variant": "black",
"list": "More Options",
"position": 1
}
,
{
"id": "24159",
"name": "Bontrager Line Dropper Seatpost",
"price": "309.99",
"brand": "Bontrager",
"category": "Bike stems & seatposts",
"variant": "black",
"list": "More Options",
"position": 2
}
,
{
"id": "30227",
"name": "Bontrager XXX 31.6 2-Bolt Seatpost",
"price": "269.99",
"brand": "Bontrager",
"category": "Bike stems & seatposts",
"variant": "greydark",
"list": "More Options",
"position": 3
}
,
{
"id": "24161",
"name": "Bontrager Pro Seatpost",
"price": "149.99",
"brand": "Bontrager",
"category": "Bike stems & seatposts",
"variant": "black",
"list": "More Options",
"position": 4
}
,
{
"id": "11849",
"name": "Bontrager Elite Seatpost",
"price": "76.99",
"brand": "Bontrager",
"category": "Bike stems & seatposts",
"variant": "black",
"list": "More Options",
"position": 5
}
,
{
"id": "13373",
"name": "Bontrager Comp Seatpost",
"price": "34.99",
"brand": "Bontrager",
"category": "Bike stems & seatposts",
"variant": "black",
"list": "More Options",
"position": 6
}
,
{
"id": "11255",
"name": "Trek Color-Matched Carbon Seat Mast Cap & 7mm Round Ears",
"price": "199.99",
"brand": "Trek",
"category": "Bike stems & seatposts",
"variant": "red",
"list": "More Options",
"position": 7
}
,
{
"id": "34840",
"name": "Bontrager Line Elite 31.6 Dropper Seatpost",
"price": "449.99",
"brand": "Bontrager",
"category": "Bike stems & seatposts",
"variant": "black",
"list": "More Options",
"position": 8
}
,
{
"id": "24997",
"name": "Trek Madone SLR Color-Matched Carbon Internal Seat Mast Cap",
"price": "359.99",
"brand": "Trek",
"category": "Bike stems & seatposts",
"variant": "orange",
"list": "More Options",
"position": 9
}
,
{
"id": "30477",
"name": "Trek Madone SL Color-Matched Carbon Internal Seat Mast Cap",
"price": "359.99",
"brand": "Trek",
"category": "Bike stems & seatposts",
"variant": "blue",
"list": "More Options",
"position": 10
}
,
{
"id": "30668",
"name": "Trek Domane SLR Color-Matched Carbon Internal Seat Mast Cap",
"price": "339.99",
"brand": "Trek",
"category": "Bike stems & seatposts",
"variant": "red",
"list": "More Options",
"position": 11
}
,
{
"id": "33924",
"name": "Trek Domane SL Color-Matched Carbon Internal Seat Mast Cap",
"price": "339.99",
"brand": "Trek",
"category": "Bike stems & seatposts",
"variant": "black_greydark",
"list": "More Options",
"position": 12
}
,
{
"id": "13662",
"name": "Madone 9 Aero Micro-adjust Seatpost",
"price": "289.99",
"brand": "Trek",
"category": "Bike stems & seatposts",
"variant": "black",
"list": "More Options",
"position": 13
}
,
{
"id": "31579",
"name": "Bontrager XXX 27.2 Seatpost",
"price": "269.99",
"brand": "Bontrager",
"category": "Bike stems & seatposts",
"variant": "greydark",
"list": "More Options",
"position": 14
}
,
{
"id": "11879",
"name": "Bontrager Speed Concept 9-Series Carbon Seatpost",
"price": "259.99",
"brand": "Bontrager",
"category": "Bike stems & seatposts",
"variant": "greydark",
"list": "More Options",
"position": 15
}
,
{
"id": "29007",
"name": "Bontrager Speed Concept UCI-legal (Gen 1) Seatpost",
"price": "259.99",
"brand": "Bontrager",
"category": "Bike stems & seatposts",
"variant": "greydark",
"list": "More Options",
"position": 16
}
,
{
"id": "21988",
"name": "TranzX JD-YSP15 Dropper Seatpost",
"price": "224.99",
"brand": "TranzX",
"category": "Bike stems & seatposts",
"variant": "black",
"list": "More Options",
"position": 17
}
,
{
"id": "10885",
"name": "Trek Pavement Suspension Seatposts",
"price": "39.99",
"brand": "Lee Chi",
"category": "Bike stems & seatposts",
"variant": "greylight",
"list": "More Options",
"position": 18
}
,
{
"id": "12827",
"name": "Electra Replacement Seatpost",
"price": "6.49",
"brand": "Electra",
"category": "Bike stems & seatposts",
"variant": "greylight",
"list": "More Options",
"position": 19
}
]
}
});
}
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.
