Rohloff Speedhub 4B Rotor 2.3mm thick 180mm MFPN=RF730-GKSS-B2 The underside of the grip

The underside of the grip features a waffle pattern for increased grip where the fingers naturally wrap around the bar

Disc Pad Type Metal or Resin Disc Diameter 140mm Disc Material Stainless Steel Disc Technology 2-piece design Disc Rotor Weight 145g Hardware No Hub Compatibility Center Lock

3 independent cam levers and included shims allow for a perfect fit and viewing angle

It's a gamechanger by Fischer resulting in many World Championships medals

Rohloff Speedhub 4B Rotor 2.3mm thick 180mm MFPN=RF730-GKSS-B2 The underside of the gripSpecific to Rohloff Speedhubs: larger 4 bolt 65mm BCD pattern Rotors work with most 160 203mm brake systems Model Speedhub Size 180mm Mount 4 Bolt Rohloff Thickness 2. 3mm