Spring (Black/Blue) -Secondary RZR

The KWI Black/Blue Secondary Spring is a high-performance secondary spring engineered specifically for the KWI UltraShift Pro R — purpose-built for high-horsepower turbo and supercharger applications that demand maximum resistance to belt slip in the OEM secondary clutch.

When horsepower climbs beyond what a standard secondary spring can handle, belt slip becomes the limiting factor — costing power, generating heat, and accelerating belt wear under sustained hard riding. The Black/Blue spring delivers the increased clamping force needed to keep the belt locked in under the extreme loads generated by turbo and supercharger builds, maintaining consistent clutch performance and belt grip at power levels that overwhelm a standard spring.

If you're running a high-output Pro R build and experiencing belt slip under load, this is the spring that solves it.