Optis Tubeless Tire Insert - 29" x 28-40mm Insert w/ Standard Presta Valve MFPN=213035 Daisy chain front top tube

Daisy chain front top tube attachment accommodates any top tube bag configuration

They are durable and stay better within the kick-zone than other klisters

Designed as a rock-solid platform for your Hammerhead computer in the on-center out-front and aero position with a mount for your camera or light underneath

Era-Es unique stainless steel wear plate protects against shoe rub damage and keeps your cranks looking fresh after spinning up all those pedal-assisted climbs all while adding additional impact protection

Optis Tubeless Tire Insert - 29" x 28-40mm Insert w/ Standard Presta Valve MFPN=213035 Daisy chain front top tubeOPTIS (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