Description
A lightweight splined sprocket hub built specifically for the JRX Jr. Sprint splined rear axle. It is 1.75″ x 27 spline with a pinch bolt for positioning, so you can slide it to exact chain alignment and lock it there.
The pinch bolt matters more than it sounds. It lets you adjust sprocket position without shimming or swapping spacers, which means you can get chain alignment truly straight instead of close enough. Straight chain alignment is the single biggest factor in chain and sprocket life, and it is where most Jr. Sprint teams quietly lose money.
Lightweight construction takes rotating weight out of the driveline – the most expensive place on the car to carry it. Direct fit for the Driven JRX rear end. Order alongside the axle spacer kit and titanium jack shaft for a complete driveline refresh.
