Starter Jackshaft Assembly With 9 Tooth Pinion Gear For OEM 66 Tooth Starter Ring. Fits Big Twin Models 1989-1993. - Evolution Industries Cables & Hydraulic Lines * Relocated cam chest oil

* Relocated cam chest oil pick-up increases gear case scavenging & virtually eliminates oil carry-over at sustained high speeds

* Designed to deliver maximum torque

320″ cylinders to net a tire melting 136 cubic inches when paired with their 4

6 steels and a set of 5 heavy duty springs

* Will not work with 18mm O2 Exhaust Sensors unless Modifying

Starter Jackshaft Assembly With 9 Tooth Pinion Gear For OEM 66 Tooth Starter Ring. Fits Big Twin Models 1989-1993. - Evolution Industries Cables & Hydraulic Lines * Relocated cam chest oil1 4 JackShaft Bolt * High Strength * Precision Manufactured From Aircraft Quality Steel. * Heat Treated. * Black Oxide Coated For Longer Life. * Made In USA.