FSA Headset Bearing 30.5mm x 41.8mm x 8mm, Chrome Steel, 1-1/8" x 45°/45° (MR121) 51cm Tire beads often slip under

Tire beads often slip under the rim edge during inflation and are difficult to pull out

Requires 3 AAA batteries that are not included

so layer up with our merino neck warmer to ensure you stay warm and stylish on every ride this winter

Versatile Build Options: Available in both 27

most aerodynamic helmet will save big watts and shave crucial seconds

FSA Headset Bearing 30.5mm x 41.8mm x 8mm, Chrome Steel, 1-1/8" x 45°/45° (MR121) 51cm Tire beads often slip underThe FSA Orbit CF 45x45 is a high quality integrated headset bearing designed for frames that do not require pressed in cups. These bearings seat directly into the head tube, providing a clean and efficient interface. This specific 45 45 degree angular contact configuration is standard for Campagnolo compatible integrated systems, ensuring smooth steering and long term durability. Precision engineered from hardened steel, this 1 1 8" cartridge bearing