The Sparks Racing Adjustable Weight Kit is designed to fit the needs of any racer or enthusiast. We have done extensive testing with both the XP Turbo and XP4 Turbo to develop the best baseline settings to maximize clutch functionality. We have noticeable reduction in turbo lag and acceleration even on stock cars by tuning the clutch. The aftermarket has already started adding much more power to these machines, making clutch tuning a must. Clutching isn’t just about performance. Clutch tuning plays a huge part in belt life and belt performance.
Pre-configured adjustable weight kit
Installation and tuning instructions