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Gunnison Product Overview
Gunnison is our ultra-durable and tacky trail tire. An aggressive tread pattern helps Gunnison stick to the ground for confident handling in a mix of loose, rocky, and technical trails. Tune in with our ultra-tacky host Cam McCaul to get a grip on Gunnison.
How to change a flat tire
Flats happen, learn how to change your tube quickly so you can get back rolling.
Learn moreHow to: Pump your tires
Setting your bike's tire pressure correctly will give you a more comfortable ride with better grip and handling. Even better, it can help prevent flats
Watch the videoNICA story
Trek is committed to changing the world by getting more people on bikes, and it starts with sending kids down the right trail. We’ve pledged $1 for every MTB tire sold, totaling over $1 million in support to the National Interscholastic Cycling Association, the governing body for middle- and high-school mountain biking in the US.
Read moreProduct features
Gunnison Pro XR
Gunnison, Colorado, — a gateway to some of the most iconic rides, ranging from rocky desert terrain to high-alpine classics. To stay true to their namesake, Bontrager Gunnison are built to perform best on varied trails with mixed conditions.
All-around trail tread pattern
The tread design on Gunnison is an all-around trail tread pattern for grip and durability in mixed conditions.
Pro XR construction
A durable 60TPI casing with squarewoven nylon sidewall puncture protection.
Trail dual-compound
A medium center rubber for braking and climbing traction with a soft shoulder for cornering confidence.
Go tubeless
A properly set up tubeless system lets you run lower tire pressure for better traction, added confidence, and a smoother, faster ride.
30-Day Unconditional Guarantee
If for any reason you're not satisfied with a Bontrager or Trek 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 moreTry our tire finder
The right tire can make every ride better! Find the best tire for however and wherever you ride.
Find your tireOur tires build strong kids
$1 from the sale of every Bontrager mountain bike tire supports the National Interscholastic Cycling Association. NICA is one of the fastest-growing high school sports in North America and Trek is proud to support their efforts to provide opportunities for all American youth to build strong body, mind, and character through mountain biking
| Size | 27.5" x 2.6" | 29" x 2.4" | 29" x 2.6" |
|---|---|---|---|
| Diameter | 27.5" | 29" | 29" |
| Width | 2.6" | 2.4" | 2.6" |
| TPI | 60 TPI | 60 TPI | 60 TPI |
| Compound | Trail Dual-Compound | Trail Dual-Compound | Trail Dual-Compound |
| Durometer | 60a/52a | 60a/52a | 60a/52a |
| Bead | Folding | Folding | Folding |
| Type | Tubeless Ready (TLR)/Clincher | Tubeless Ready (TLR)/Clincher | Tubeless Ready (TLR)/Clincher |
| Max pressure | 40psi | 50psi | 40psi |
| ETRTO | 66-584 | 61-622 | 66-622 |
| Tread | Knobby | Knobby | Knobby |
| Construction | Pro XR | Pro XR | Pro XR |
| Studdable | No | No | No |
| Sealant volume | 3.01oz (89mL) | 3.01oz (89mL) | 3.01oz (89mL) |
| Weight | 960g | 875g | 980g |