HUB RR SRAM 900 28 12mmTA 11s CAS BK BOOST 1.85mm SPACER

Double Time four pawl internal mechanism ensures rapid lightning-fast engagement for quick and confident pedal responsiveness

Speedball bearings provide smooth, long-lasting rotation performance

Available in 28 and 32 hole configurations with XD or Cassette driver

3D forged and machined for low weight and high strength

Boost variant is 12mm Thru axle only