jt rear sprocket for aprilia BS90 Shaft is zinc-phosphated and has

Shaft is zinc-phosphated and has reduced diameter

15x 12-point socket 1/2" drive: 3/8" to 1-1/4"

The patented hidden breather backing plate is o-ringed at the heads and exits inside the mouth of the throttle body for a virtually closed loop system

Lengths do not include compression bumpers

1976 MX - 400cc

jt rear sprocket for aprilia BS90 Shaft is zinc-phosphated and hasJT Rear Sprocket for Aprilia JT Sprockets is the worlds leading manufacturer of aftermarket sprockets, committed to supplying the most durable, best quality sprockets available in the marketplace worldwide. JT Sprockets are manufactured the right way by hobbing, machining and drilling. This is the only proven way to achieve the closest of tolerances and the most accurate teeth profiles. All are heat treated, hand finished to perfection and meet or