One-piece design delivers more starter torque to the primary and is more tolerant of misalignment problems, all for less money than stock jackshaft assemblies.

• Direct OEM jackshaft replacements restore reliable starter engagement on Evolution and early Twin Cam Big Twins
• One-piece design eliminates spline wear and ensures positive gear meshing under high torque
• Essential for starter motor rebuilds, fixing common no-crank conditions on 1989-2006 models