BB MR 137 2RS-blk | 7 x 13 x 4mm Bearing

MR 137 2RS - ABEC-3 Radial Bearing (C3 Clearance) - 7mm x 13mm x 4mm This tiny radial bearing has been used as a pedal bearing (Speedplay). This ABEC-3 radial bearing features 52100 High-Carbon Chromium alloy races paired with Grade 10 balls and dual seals to withstand the outside elements, and to contain the 90% fill Mobil XHP 222 high pressure water proof synthetic grease. The Enduro line of bearings are available in high-carbon chromium steel, 440C stainless steel, ceramic-hybrid and XD15 with ceramic or stainless balls. Our bearings are always engineered with deepest groove races possible to accommodate the largest balls and feature dual-lip seals that ride in a micro-groove creating a full labyrinth to provide superior protection against the elements.