PMR Jackshaft 4-6.5HP Engine
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PMR Performance Jackshaft for 4-6.5hp engine's Easy gear ratio adjustments, shown with 13t-15t combo. Input and output Sprockets which can be easily switched from high torque 6.73-1 ratio to high speed 5.03 -1 ratio.

Jackshaft plate bolts to most any engine with the standard 2.5 inch engine PTO side cover bolt spacing.

This system has been tested on Karts and highly modified engines with 15- 20+ HP! Optional custom gearing available at your request!  

Kit Includes:

  • Jackshaft Plate Assembled
  • Mounting Hardware
  • Detailed Instructions

NOTE: Chain NOT included. Choose gear ratio options in dropdown list above.


Addtional options may be added to your order: (choose above)


  • #35 Primary Chain Pre-Cut w/ Master Link
  • PMR Chain Guard

  • Item #: PMRJSK65

PMR Jackshaft 4-6.5HP Engine

Price: $99.95
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