Optis Tubeless Tire Insert - 27.5" x 28-40mm Insert w/ Standard Presta Valve ModelNumber=E4694 Works with other brands single

Works with other brands single chainrings as well

Windproof and moisture wicking

100mm wheels available in speeds 1

Brake and shift lever have independent adjustable reach

Design by Braulio Amado for the Cinelli art program

Optis Tubeless Tire Insert - 27.5" x 28-40mm Insert w/ Standard Presta Valve ModelNumber=E4694 Works with other brands singleOPTIS (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