Wheels Manufacturing BB30 Bearing Kit This kit replaces worn bearings in BB30 bikes/frames or allows you to setup a new BB30 frame with the required circlips and bearings from scratch. Dimensions: OD: 42mm / ID: 30mm / Width: 7mm Direct replacement bearing for BB30 OEM systems ABEC-3 rated bearing with 5/32 Grade 20 balls, the largest in the industry12% increase in static load rating compared to standard 6806 bearings Dual lip, groove type seals keep dirt out and 90% fill rate grease in Mobil HP 222 synthetic grease is long lasting and protects against contamination Manufacture Part Number: BB30-KITKit Includes2 x SB-6806 bearings2 x bearing retainer circlips | Wheels Manufacturing | Bb30 Bearing Kit | Silver | Bb30 And Clips