Crazy Nutshell optional

Innovative tunable sweep to adjust the stop to a narrower window

A zippered main compartment and hip belt pockets fit your spare tube

1x Air stopper

Who's this item for: Any riders running a Box Two 9 speed drivetrain but will suit riders with any BOX prime 9-speed drivetrain

Enduro CO 6801 12mm x 21mm x 5mm Hub Bearing - 12mm - 21mm - 5mm - ABEC-5 Ceramic Radial Bearing - Black Oxide Heavy/Bulky Crazy Nutshell optionalCO 6801V Enduro Zero, Black Oxide, Ceramic Hybrid, ABEC 5, radial bearing (C3 clearance) 12 x 21 x 5mm Enduro Zero, Ceramic Hybrid, ABEC 5, radial bearing featuring black oxide treated 52100 High Carbon chromium alloy races paired with grade 5 Silicon Nitride Ceramic balls with 90% fill, high pressure, water proof grease. Si3N4 ceramic balls reduce bearing wear and increase bearing life by eliminating steel on steel contact within the bearing. Black