Run a primary spring. Just run the right one.
The Full Access UTV “Softer” Primary Clutch Spring for the KRX and KRX4 is designed to fix a real-world problem we’ve seen over and over. Running without a primary spring leads to excessive belt heat, poor drivability, and unnecessary wear. This spring keeps things working the way they should, without the downsides of the stock setup.
By reducing spring force while maintaining proper clutch function, it helps keep belt temps down, improves drivability, and gives you a better overall riding experience.