Optis Tubeless Tire Insert - 29" x 28-40mm Insert Only ModelNumber=J2618 }Park Tool BX-3 Rolling Big

}Park Tool BX-3 Rolling Big Blue Box

The Speedmax remains one of the best models across all brands in terms of consistent flex and quality control and it is easy for us to recommend as a great choice in all conditions

Direct mount design is lighter weight than a spider version

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

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

Optis Tubeless Tire Insert - 29" x 28-40mm Insert Only ModelNumber=J2618 }Park Tool BX-3 Rolling BigOPTIS (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