Optis Tubeless Tire Insert - 27.5" x 28-40mm Insert w/ Standard Presta Valve MFPN=RDEX5165028S011494 Featuring a deep multi-surface tread

Featuring a deep multi-surface tread design and generous 1

A dirty drivetrain causes poor shifting and unnecessary wear to expensive parts

Steerer Type Tapered Lockout Switch Crown Brake Type Post Mount 200 Negative Spring Air Travel (mm) 190 Offset 44 Axle to Crown Length 606 Front Axle 15mm Thru x 110mm Maximum Tire Width 81 S

Lightweight durable In-Mold construction with a long-lasting combination of EPS core and Polycarbonate shell

Optis Tubeless Tire Insert - 27.5" x 28-40mm Insert w/ Standard Presta Valve MFPN=RDEX5165028S011494 Featuring a deep multi-surface treadOPTIS (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