Challenge Smart-Tubeless Sealant-W/Applicator250Ml Headwear While the new UCI regulations

While the new UCI regulations on frame shape have guided us as we push the boundaries to maximize the frame’s aerodynamic performance

Weight: 470 grams

Wear-resistant cleats

and we’ll share more about what we’re discovering here soon

Wider tires are better at reducing shocks from cracks

Challenge Smart-Tubeless Sealant-W/Applicator250Ml Headwear While the new UCI regulationsHigh 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.