BKCJ-0312 - 11 tooth, XD15 Hybrid Bearing, Machined Delrin Derailleur Pulleys for 11 speed SRAM Derailleurs (4mm bolt upper/5mm bolt lower) - Red Enduro 440C stainless headset bearings

Enduro 440C stainless headset bearings are the same bearings found in many popular headset brands with a lifetime warranty

combined with deep race grooves in these bearings providing greater lateral support for the twisting and multi-directional forces associated with mountain bike pivots

We accomplish this with a special design where the maximum number of balls are inserted into the bearing

Guaranteed to last forever against corrosion

ceramic-hybrid and XD15 with ceramic or stainless balls

BKCJ-0312 - 11 tooth, XD15 Hybrid Bearing, Machined Delrin Derailleur Pulleys for 11 speed SRAM Derailleurs (4mm bolt upper/5mm bolt lower) - Red Enduro 440C stainless headset bearingsBKCJ 0312 11 tooth, XD15 Hybrid Bearing, Machined Delrin Derailleur Pulleys for 11 speed SRAM Derailleurs (4mm bolt upper 5mm bolt lower) The ultimate upgrade pulley. Guaranteed to last forever against corrosion Precision machined Delrin Derailleur pulleys featuring XD15 Ceramic Hybrid, radial bearings for enhanced shifting performance and longevity. Designed and manufactured for performance, these pulleys feature CN (tight clearance) bearings in the