

CHALLENGE Smart Tubeless Sealant
High-performance tubeless systems deserve exceptional sealant. Challenge Smart Tubeless Sealant was designed to work with both traditional and handmade TLR tires. This non-allergenic, ammonia free formula can seal up to 6mm cuts, remains liquid in the tire for up to 6 months, doesn't coagulate with Co2 use and won't damage rims or tires.

CHALLENGE Smart Tubeless Sealant
More Challenge Accessories
CHALLENGE Smart Tubeless Sealant
Challenge Tire FAQs
Selecting a Road Tire
Which is the best blend of speed, rolling resistance and durability for my riding? You can learn more about our Road Line here: Selecting a Challenge Road Tire
Selecting a Gravel Tire
Which model is best for the terrain you ride? You can learn more about our Gravel Line here: Selecting a Challenge Gravel Tire
Selecting a Cyclocross Tire
Which tire is best in sand, snow or mud? You can learn more about our Cyclocross Line here: Selecting a Challenge CX Tire
Are Challenge TLR Tires Compatible with Hookless Rims?
The following Challenge TLR tires are compatible with ISO/ETRTO-compliant hookless rims:
• Getaway RACE Series TLR tires
• All Handmade TLR tires in sizes 33–45C
• All Criterium RS TLR sizes
Are Challenge Tires Difficult to Install?
A tight fitting TLR tire is critical for holding air and keeping the tire on the rim. You can find mounting videos for TLR and Tubulars here: Mounting Instructions