Based on an old classic, the TBT sprocket from BSD is a throwback to the glory days of Redline Flight Cranks, but built for modern riding. Black or Polished and 25 or 28 teeth.

Fully 3D CNCd dual thickness sprocket

Super tough 7075-T6 construction

8mm thick at the edges for strength

Tapers to 6mm at the center to save weight

Centre hole 15/16 (23.8~24mm), supplied with both 19mm and 22mm top hat washers to fit all cranks

Weight : 25t – 70g 28t – 90g