Originally developed for the incredibly light Émonda SLR 10, the SLR seat mast cap is the lightest available for Trek bikes equipped with round seat masts.
This high-end cap comes with 7x10mm oval ears, so it's ready for most carbon-railed saddles out of the box but able to convert to 7mm round or 7x9mm ears instead if necessary.
Product details
Lighter than the standard round carbon seat mast cap
Direct fit on all Trek road bikes with round seat masts
One bolt head design offers easy fore-aft and infinite angle adjustment
Includes 10 mm oval saddle clamp ears, 7 mm round ears sold separately
if (typeof dataLayer !== "undefined") {
dataLayer.push({
"ecommerce": {
"currency": "AUD",
"impressions": [
{
"id": "33107",
"name": "Bontrager DropLock Remote",
"price": "159.99",
"brand": "Bontrager",
"category": "Bike stems & seatposts",
"variant": "black",
"list": "More Options",
"position": 1
}
,
{
"id": "06096",
"name": "Bontrager Rotary Head Seatpost Saddle Clamp Ears",
"price": "19.99",
"brand": "Bontrager",
"category": "Bike stems & seatposts",
"variant": "greylight",
"list": "More Options",
"position": 2
}
,
{
"id": "27219",
"name": "Bontrager Line Elite Dropper Under-Bar Seatpost Lever",
"price": "98.99",
"brand": "Bontrager",
"category": "Bike stems & seatposts",
"variant": "black",
"list": "More Options",
"position": 3
}
,
{
"id": "27090",
"name": "Trek Madone SLR Seatpost Hardware Kit",
"price": "87.99",
"brand": "Trek",
"category": "Bike stems & seatposts",
"variant": "black",
"list": "More Options",
"position": 4
}
,
{
"id": "09194",
"name": "Bontrager (Gen 1) Speed Concept 10mm Seatpost Head",
"price": "70.99",
"brand": "Bontrager",
"category": "Bike stems & seatposts",
"variant": "black",
"list": "More Options",
"position": 5
}
,
{
"id": "31188",
"name": "Bontrager (Gen 1) Speed Concept 35mm Seatpost Head",
"price": "70.99",
"brand": "Bontrager",
"category": "Bike stems & seatposts",
"variant": "black",
"list": "More Options",
"position": 6
}
,
{
"id": "27218",
"name": "Bontrager Line Dropper Under-Bar Seatpost Lever",
"price": "65.99",
"brand": "Bontrager",
"category": "Bike stems & seatposts",
"variant": "black",
"list": "More Options",
"position": 7
}
,
{
"id": "32479",
"name": "Trek Domane Seatpost Binder Kit",
"price": "54.99",
"brand": "Trek",
"category": "Bike stems & seatposts",
"variant": "black",
"list": "More Options",
"position": 8
}
,
{
"id": "14141",
"name": "Bontrager Lightweight Emonda Seatpost Ears",
"price": "47.99",
"brand": "Bontrager",
"category": "Bike stems & seatposts",
"variant": "red",
"list": "More Options",
"position": 9
}
,
{
"id": "14265",
"name": "Bontrager Drop Line Universal Dropper Lever",
"price": "43.99",
"brand": "Bontrager",
"category": "Bike stems & seatposts",
"variant": "black",
"list": "More Options",
"position": 10
}
,
{
"id": "25886",
"name": "Bontrager 2014 Speed Concept Seat Binder",
"price": "35.99",
"brand": "Trek",
"category": "Bike stems & seatposts",
"variant": "black",
"list": "More Options",
"position": 11
}
,
{
"id": "25890",
"name": "Trek Madone 9-Series Aero Seatpost Binder",
"price": "32.99",
"brand": "Trek",
"category": "Bike stems & seatposts",
"variant": "black",
"list": "More Options",
"position": 12
}
,
{
"id": "25893",
"name": "Trek Road 2-bolt Seatpost Saddle Clamp Ears",
"price": "30.99",
"brand": "Trek",
"category": "Bike stems & seatposts",
"variant": "black",
"list": "More Options",
"position": 13
}
,
{
"id": "25888",
"name": "Bontrager 2016 XXX Seatpost Saddle Clamp Ears",
"price": "30.99",
"brand": "Bontrager",
"category": "Bike stems & seatposts",
"variant": "black",
"list": "More Options",
"position": 14
}
,
{
"id": "24758",
"name": "Bontrager Eyeleted Quick Release Seatpost Clamp",
"price": "25.99",
"brand": "Bontrager",
"category": "Bike stems & seatposts",
"variant": "black",
"list": "More Options",
"position": 15
}
,
{
"id": "14159",
"name": "Bontrager Rotary Head Seatpost Head Part Kits",
"price": "24.99",
"brand": "Bontrager",
"category": "Bike stems & seatposts",
"variant": "black",
"list": "More Options",
"position": 16
}
,
{
"id": "12688",
"name": "Electra 28.6 mm Seatpost Clamp with Rack Mounts",
"price": "21.99",
"brand": "Electra",
"category": "Bike stems & seatposts",
"variant": "greylight",
"list": "More Options",
"position": 17
}
,
{
"id": "25870",
"name": "Bontrager Premium Seatpost Clamp",
"price": "21.99",
"brand": "Bontrager",
"category": "Bike stems & seatposts",
"variant": "black",
"list": "More Options",
"position": 18
}
,
{
"id": "25889",
"name": "Electra 31.8 mm Seatpost Clamp with Rack Mounts",
"price": "21.99",
"brand": "Electra",
"category": "Bike stems & seatposts",
"variant": "greylight",
"list": "More Options",
"position": 19
}
,
{
"id": "10891",
"name": "Bontrager Quick Release Seatpost Clamp",
"price": "19.99",
"brand": "Bontrager",
"category": "Bike stems & seatposts",
"variant": "black",
"list": "More Options",
"position": 20
}
,
{
"id": "25629",
"name": "Trek Madone SLR Seatpost Tail Plug ",
"price": "19.99",
"brand": "Trek",
"category": "Bike stems & seatposts",
"variant": "black",
"list": "More Options",
"position": 21
}
,
{
"id": "21486",
"name": "Bontrager Flare Mount for Madone 9 Seatpost",
"price": "16.99",
"brand": "Bontrager",
"category": "Bike lights",
"variant": "black",
"list": "More Options",
"position": 22
}
,
{
"id": "22381",
"name": "Bontrager Drop Line Dropper 10 mm Travel Reducer",
"price": "16.99",
"brand": "Bontrager",
"category": "Bike stems & seatposts",
"variant": "white",
"list": "More Options",
"position": 23
}
]
}
});
}
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.
