Z-Broz Ski Doo XM-Gen 4 X Package 36" Dual Rate Spring Kit Brake cable these bumpers use smaller tubing

these bumpers use smaller tubing and machined parts to eliminate material wherever possible

Pro RMK/Rush/Switchback/Switchback Assault

Select Rider Weight with Gear when ordering

This kit does NOT modify any OEM parts

The 509 Stoke Sock pushes the pedal to the metal on performance to keep your feet warm and dry all day

Z-Broz Ski Doo XM-Gen 4 X Package 36" Dual Rate Spring Kit Brake cable these bumpers use smaller tubingApplication: Ski Doo G4 850 (2017 2019) Fits KYB X Package Shocks Only. *Will not fit on SP Models. Improve Comfort, Control and Bottoming Resistance. The stock KYB X Package springs will be too soft for most riders and way too soft for aggressive riders. By installing this dual rate kit, you will still get a nice plush ride and allow you to hit jumps and drops without bottoming out. This spring kit includes: (2) Spring Reducers (2) Main Springs (2)