The original BSD sprocket, now in it's 21st year of production, the amount of teeth may have changed over the years but the classic tri-spoke look hasn't..
– Fully CNC’d 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 24mm, supplied with both 19mm and 22mm top hat washers to fit all cranks