T-Cycle 15t Power Idler Cog Sport with 8mm Bearing

The 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 a reliable, quality addition to your recumbent.

170mm Diameter.  8mm Bearing.