420/500/520 Primary (clutch) Reduction 20%

  • Sale
  • Regular price $800.00
  • 5 available


GEARS IN STOCK

RED BILLET BASKETS AVAILABLE

**Now offering "CUSTOMER CORE" options for a cheaper upfront cost to you. You MUST send us your stock clutch basket assembly upfront after placing your order. We will use your basket for your reduction and it'll ship back out the following business day after we receive your basket. If you choose the "CUSTOMER CORE" billet basket upgrade we still require your stock basket assembly before we ship your reduction. Email/message us for shipping info.

The website automatically displays the more expensive billet basket "RBM CORE" option, use the option box above to choose the cheaper cast basket or customer core options.

**The "RBM CORE" price includes a $175 core charge on the aluminum clutch basket. Please send in your stock basket and include a copy of the original purchase receipt for the $175 core refund.

This is our billet 20% gear reduction for foot-shift and standard ES machines. This reduction DOES NOT require crankcase modifiction/cutting to be installed. We offer stiffer stage 1 clutch springs that can be used with this reduction. Pic may not show correct size.

DOES NOT FIT DCT(AUTO WITH ES) MODELS

**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.