

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 Smart Bead Seating Tool
CHALLENGE Presta Valve Extenders
CHALLENGE Presta Valve Extender Wrench
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











