Fine-Tune Your Shift Curve: Primary & Secondary Clutch Springs

The primary and secondary springs inside your side-by-side’s CVT system are the absolute brains of your drivetrain. Over time and under intense heat, factory steel springs lose their tension, causing your transmission to upshift too quickly, bog down on steep hills, and slip the drive belt. Don't replace your entire transmission when a tired component is holding you back, take absolute control of your vehicle’s shifting behavior with high-performance Clutch Springs!

If you want to raise your initial launch RPM or squeeze out more peak power, swapping your drive spring for an option like the EPI Primary Clutch Spring gives you the perfect engagement feel. To battle performance-robbing belt slip caused by heavy mud tires or paddle tires drag, dropping in an EPI Secondary Clutch Spring increases the mechanical squeeze on your belt, delivering lightning-fast backshifting whenever you stomp the throttle.

EPI Performance focuses on severe-duty endurance, manufacturing their springs from high-tensile silicone wire with a strict 5% load tolerance, the tightest in the powersports industry. Stop crossing your fingers and hoping your tired factory drivetrain can pull your rig through the next deep rut section or steep hill climb. Refresh your clutch springs, eliminate heat-producing slippage, and dial in a crisp, predictable powerband that perfectly matches your exact machine setup and riding style.