Enduro ACB 4545 S8551 1-3/8 BO Angular 36.8 x 45.8 x 6.5mm 45°/45° Headset Bearing needstag - Water resistant IP66 rating

- Water resistant IP66 rating (wash-proof)

SRAM chain engineers developed PowerLock as a tool-free

effectively communicating your actions to traffic and fellow cyclists

With the rack in contact with only the tyre

it utilizes a Pindome design for gears 1-8 and a single piece mini-cluster for gears 9-12

Enduro ACB 4545 S8551 1-3/8 BO Angular 36.8 x 45.8 x 6.5mm 45°/45° Headset Bearing needstag - Water resistant IP66 ratingACB 4545 S8551 BO 1 3 8" Angular Contact Black Oxide treated Headset bearing (36. 8 x 45. 8 x 6. 5mm: 45 x 45 deg) Angular contact headset bearing featuring anti corrosion Black Oxide Magnetite coated 52100 High Carbon Chromium alloy races paired with grade 10 Balls. Black Oxide coating provides an extra level of corrosion resistance and extended worry free performance The Enduro line of angular contact headset bearings start with Black Oxide treated