420/500/520 Primary 80% Reduction

  • Sale
  • Regular price $800.00
  • 4 available


GEARS IN STOCK

This is our 80% (actual 83%) billet gear reduction for fuel injected foot-shift and standard ES machines. This reduction requires extra case clearance/cutting around the clutch basket. Our stiffer stage 2 clutch springs are necessary with this size reduction. The stock clutch springs do not provide enough clamping force to hold the extra torque produced from the lower input ratio. Pic may not show correct size.

 **DOES NOT FIT "DCT" (AUTO+ES) MODELS OR 2005-2011 500 FOREMAN

*ES models will need an ES module to prevent electronic shift issues. Springs, ES modules and seal kits are located in the 420/500/520 sections and "Parts" section of the site.