Optis Tubeless Tire Insert - 29" x 28-40mm Insert Only Headset Accessories These versatile shifters have CNC-machined

These versatile shifters have CNC-machined mechanisms that result in crisp shifting's you will love

Manufacturer Part Number: LY-BSTSK6101617

UPC: 812119107026

Manufacturer Part Number: 11654061

- Eliminates squeaking

Optis Tubeless Tire Insert - 29" x 28-40mm Insert Only Headset Accessories These versatile shifters have CNC-machinedOPTIS (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