T-Cycle 15t Power Idler Cog Sport with 8mm Bearing computer mounts 1 cm long and the

1 cm long and the diameter is 2

press fit diameter bottom bracket shell

Bottom Bracket:  Shimano Steps

100% free of BPA

T-Cycle 15t Power Idler Cog Sport with 8mm Bearing computer mounts 1 cm long and theThe TerraCycle Sport Power Idler is the second best power idler on the market (second only to the Elite Power Idler). With aerospace grade ballistic nylon side plates, tough metal core, durable aluminum cog and top of the line ABEC 7 steel bearings, this rugged, workhorse idler will give you years of trouble free improved drivetrain performance. It's solid and, quite frankly, it's beautiful. For miles and miles, the Sport Power Idler will prove itself