Betasso Product Overview
Betasso is an aggressive gravel tyre with a robust RSL GX construction that is built using bead-to-bead plus sub-tread puncture protection so you can explore way off the beaten path worry free.
"The Betasso gripped well"
"Usually with gravel tyres, fast on pavement means you’ll be missing out off-road, but the Betasso gripped well in our humidity-slicked conditions, followed up by bone-dry late summer dust."
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30-Day Unconditional Guarantee
Think of it as a 30-day test ride. If for any reason you're not satisfied with your purchase, return it for a full refund!
Learn moreBest-bang-for-your-buck upgrade: Tyres
If you’re looking for speed, comfort or confidence with a price that doesn’t break the bank, upgraded bike tyres are the best benefit-to-cost upgrade for your bike.
See the tyresGo tubeless
Tubeless tyres prevent flats, ride with more comfort and roll faster for the same effort. Be sure your next tyres and wheels are TLR-compatible.
See the tyresMade for each other
A match made on the bike. Bikes with Bontrager wheels, tyres, tubeless rim strips and sealant are components designed to work in harmony as a flawless system to help you have more fun, every ride.
Shop nowProduct features
Betasso RSL GX
Named after a popular preserve in Colorado, Bontrager Betasso is an aggressive gravel tyre made for maximum traction and durability in loose and rough conditions.
RSL GX construction
A durable 60 TPI casing with square-woven nylon sidewall and sub-tread puncture protection.
Gravel dual-compound
A firm and fast-rolling rubber at the centre pairs with a medium-firm shoulder rubber for speed, cornering grip and confidence.
A 350% improvement
Betasso RSL GX boasts a 350% improvement in tread puncture protection compared to the Bontrager GR2 Team Issue Tyre it replaces.
Go tubeless
A properly set up tubeless system lets you run lower tyre pressure for better traction, added confidence and a smoother, faster ride.
Better together
Bontrager offers a complete tubeless system including wheels, tyres, sealant, valves, and rim strips. Every part of this set-up is designed to work smoothly together, for the best in performance and ease of use.
Gravel tyre pressure recommendation
Find rider weight and match it with your tyre width to find a recommended tyre pressure. It can be helpful to set the front tyre up at a slightly lower pressure. If your tyres feel too soft or too firm, add or remove pressure to dial in your tyre pressure for your surface. The recommended pressures are guidelines. Do not exceed the maximum rated pressure indicated on the sidewall or rim. Follow the rim manufacturer’s recommended pressure ranges for your rim width/tyre combination.
Sealant recommendation by tyre size
Follow the sealant recommendation for your tyre size to get your tyres set up tubeless and ready to 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 moreOur tyres build strong kids
$1 from the sale of every Bontrager mountain bike tyre supports the US National Interscholastic Cycling Association. NICA is one of the fastest-growing secondary 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
Gravel Tyre Guide
We’ll help you find the right tyre for the gravel roads you love to ride.
Gravel Tyre GuideTry our tyre finder
The right tyres can make every ride better! Find the best tyres for however and wherever you ride.
Find your tyre| Size | 700C x 42mm | 700C x 45mm | 700C x 50mm | 700C x 55mm |
|---|---|---|---|---|
| Diameter | 700C | 700C | 700C | 700C |
| Width | 42 mm | 45 mm | 50 mm | 55 mm |
| TPI | 60 TPI | 60 TPI | 60 TPI | 60 TPI |
| Compound | Gravel Dual-Compound | Gravel Dual-Compound | Gravel Dual-Compound | Gravel Dual-Compound |
| Bead | Folding | Folding | Folding | Folding |
| Type | Tubeless Ready (TLR)/Clincher | Tubeless Ready (TLR)/Clincher | Tubeless Ready (TLR)/Clincher | Tubeless Ready (TLR)/Clincher |
| Maximum pressure | 50 psi | 50 psi | 50 psi | 50 psi |
| ETRTO | 42-622 | 45-622 | 50-622 | 50-622 |
| Tread | Knobby | Knobby | Knobby | Knobby |
| Construction | RSL GX | RSL GX | RSL GX | RSL GX |
| Studdable | No | No | No | No |
| Sealant volume | 59 ml | 59 ml | 59 ml | 59 ml |
| Weight | 595g | 630g | 670g | 720g |