Optis Tubeless Tire Insert - 29" x 28-40mm Insert Only MFPN=HSA-IA41SUUX-IC52X-S Tooth Count 40 Ring Position/Type

Tooth Count 40 Ring Position/Type Chain Retaining Single Ring Drivetrain Speeds 12 Chainring BCD 107 Color Gray Defined Color Gray Material Aluminum

Lightweight and silky smooth 7075 alloy road racing hubs - a modern take on a timeless classic

Athletes can enjoy World Cup-level service while avoiding the hassle of traveling with waxing gear or waxing their skis themselves

T6 T8 T10 T15 T20 T25 T30 and T40 Torx compatible wrenches included

} Rugged nylon construction for the toughest trails

Optis Tubeless Tire Insert - 29" x 28-40mm Insert Only MFPN=HSA-IA41SUUX-IC52X-S Tooth Count 40 Ring Position/TypeOPTIS (Odyssey Pneumatic Tire Insert System) is a lightweight highly tunable high efficiency tubeless tire insert. Tire assemblies are one of the most important performance factors for any bike. They provide all the grip to the ground they serve as a critical first element of the bikes suspension and they provide essential support to the cornering forces that the bike encounters. OPTIS separates the function of the bikes grip from its suspension and