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About this product

The KWI HP Secondary Spring (Blue/Pink) is a high-pressure secondary spring engineered to clamp the belt harder and reduce belt slip under high-load, high-horsepower riding conditions. Standard in all KWI Fusion Secondaryclutches, this spring is the go-to upgrade for riders who need maximum belt grip and consistent clutch performance when pushing their machine hardest.

The increased clamping force of the HP spring keeps the belt locked in under the sustained loads generated by desert racing and high-horsepower dune builds — conditions where a standard spring can allow slip that robs power and accelerates belt wear. If you're running a tuned or high-output build and need the belt to stay planted, this is the spring for it.

Why it matters

Belt slip under high horsepower isn't just a performance problem — it's a belt killer.

The KWI HP Secondary Spring clamps harder so the belt stays where it needs to be under load. Less slip means more power to the ground, less heat in the belt, and longer belt life when you're running hard in the desert or the dunes.

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Product Info

The KWI HP Secondary Spring (Blue/Pink) is a high-pressure secondary spring engineered to clamp the belt harder and reduce belt slip under high-load, high-horsepower riding conditions. Standard in all KWI Fusion Secondaryclutches, this spring is the go-to upgrade for riders who need maximum belt grip and consistent clutch performance when pushing their machine hardest.

The increased clamping force of the HP spring keeps the belt locked in under the sustained loads generated by desert racing and high-horsepower dune builds — conditions where a standard spring can allow slip that robs power and accelerates belt wear. If you're running a tuned or high-output build and need the belt to stay planted, this is the spring for it.