*All reduction orders come with a free Promotional T-shirt. Please include your shirt size in the notes of your order (M, L, XL or 2XL). Purchase an additional shirt:
https://reductionboss.com/collections/rb-gear/products/rb-promo-t-shirt
**Wait times vary depending on workload, these kits are made to order.
Kit will include reduction gears, machining of rear cover spacer (sent in upfront), ES modules and necessary gaskets. A small amount of case cutting in two areas (performed by installer) is required for fitment of the larger clutch gear. **Customer MUST send in cores upfront (rear cover spacer and bare clutch hub) for modification. Please email us for install instructions, pictures, and updated wait times.
***The ES modules must be programmed on the machine after install. Please email us for instructional video on how to program.
If you're machine has an aftermarket tune you will need a new reduction-specific tune to correct shifting/clutch parameters after reduction or you may need to restore the factory tune for drivability.
This kit requires a NDA electronic signature.