1-1/8,For BMX / Freeride
12mm Deep Cup design
Nylon top cover & plastic seal
Forged and CNC machined steel cups
Upper : Ø5/32x20 caged ball bearings
Lower : Oversized Ø3/16x20B caged ball bearings
Stack Height 12.3+11.9=24.2mm
Spares:
Top Bearing: MR013
Bottom Bearing: MR002
Crown Race: H6010