FSA SL Hybrid ACB Bearing 1-1/8" 45°x45° MFPN=PX12G Optimized for use with GRX

Optimized for use with GRX ultra wide range drivetrains when using the GRX 810 (RX810) rear derailleur paired to a 1x chainring configuration

Wind- and water-repellent softshell jacket with brushed interior for extra warmth

series Interlok ID 1-1/8" size (2) 5mm

Merino Wool has a natural ability to move heat and moisture

FSA SL Hybrid ACB Bearing 1-1/8" 45°x45° MFPN=PX12G Optimized for use with GRXSuper Light (SL) headset bearings are 25% to 38% lighter than conventional bearings and offer similar durability SL bearings use a steel inner race and ball bearings with an abbreviated outer steel race housed inside an alloy shell TECH SPECS model Orbit CE No. 8B description SL ACB bearing 45x45 degree MR042R size 1 1 8" package each