Optis Tubeless Tire Insert - 27.5" x 28-40mm Insert Only MFPN=11159363 Classified cassettes are machined from

Classified cassettes are machined from one-piece steel with a high durability coating to reduce wear

The race material is an advanced stainless alloy that is nitrogen infused and will not rust or corrode

} Damp Evo walkable and clipless sole featuring natural rubber tread for enhanced grip and the Eva innersole for optimized shock absorption

1 Defined Color Black ISO Width (mm) 47 ISO Diameter 584 / 650b / 27

78 Bolt Mount Diameter 8

Optis Tubeless Tire Insert - 27.5" x 28-40mm Insert Only MFPN=11159363 Classified cassettes are machined fromOPTIS (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