Optis Tubeless Tire Insert - 27.5" x 28-40mm Insert w/ Standard Presta Valve MFPN=WST081 The result is an inner

The result is an inner tube that can be up to 70% lighter up to 50% more compact and as resistant against punctures as an equivalent tube made of butyl

(mm) 42 Bearing I

please follow manufacturers recommendation for your frame/forks

Material CottonGender/Age UnisexColor Slate BlueSize LargeSleeve Style ShortDefined Color Blue

Optis Tubeless Tire Insert - 27.5" x 28-40mm Insert w/ Standard Presta Valve MFPN=WST081 The result is an innerOptis Tubeless Tire Insert 27. 5" x 28 40mm Insert w Standard Presta Valve. OPTIS (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