Optis Tubeless Tire Insert - 29" x 28-40mm Insert Only ModelNumber=J2618 FF cleaner provides gentle glide

FF cleaner provides gentle glide cleaning that removes dirt and wax products so that ski bases absorb more wax and run faster

25mm thick at the tooth which fits inside most narrow 6 through 9 speed chains and the pulley cage is wide enough to allow 1/8″ single speed chains as well

}Park Tool BX-3 Rolling Big Blue Box

Front/Rear RR Cassette Body/Freehub 11-12s XD Hole Count 32H Spacing/Axle 12TA Material Aly Color Blk Weight Brake Type 6B Spacing 148 PCD-L PCD-R LTF-L LTF-R CTF-L CTF-R

Direct mount design is lighter weight than a spider version

Optis Tubeless Tire Insert - 29" x 28-40mm Insert Only ModelNumber=J2618 FF cleaner provides gentle glideOPTIS (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