Enduro CO MR 17287 17mm x 28mm x 7mm Hub Bearing - 17mm - 28mm - 7mm - ABEC-5 Ceramic Radial Bearing - Black Oxide PDP|PLP|Rail Material The PF30 uses BB30 bearings

The PF30 uses BB30 bearings preinstalled in bearing cups

When riding

Weight: 229-254 grams

Designed to keep riders warm in cold riding conditions with a three-layer construction provides excellent levels of thermal insulation

Enduro CO MR 17287 17mm x 28mm x 7mm Hub Bearing - 17mm - 28mm - 7mm - ABEC-5 Ceramic Radial Bearing - Black Oxide PDP|PLP|Rail Material The PF30 uses BB30 bearingsCO MR 17287LB Enduro Zero, Black Oxide, Ceramic Hybrid, ABEC 5, radial Bearing (C3 clearance) 17 x 28 x 7mm 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 dual lip labyrinth (LLB) seals to withstand the outside elements and to contain the 90% fill Mobilux NGLI 2 high pressure water proof synthetic grease. Si3N4 ceramic