

RZRX300 Primary
The KWI RZRX300 Primary Clutch System is a complete, ready-to-bolt-on primary clutch upgrade for the Polaris RZR XP — a brand-new OEM RZR primary clutch fully assembled in-house by KWI with the X300 Clutch Kit, RZRBlade 300 Billet Inner Sheave, and Billet Overdrive Cover pre-installed and ready to go. No send-in required, no assembly needed — pull your factory primary off, bolt this on, and ride.
The X300 Clutch Kit delivers adjustable weight tuning, stronger backshifting, and more consistent power transfer for your exact setup and riding conditions. The RZRBlade 300 replaces the factory inner sheave — a known failure point — with aerospace-grade billet construction and Groovix Cooling Technology that actively manages belt temperatures under load. The Billet Overdrive Cover eliminates clutch flex, extends belt life, and unlocks 3–5 MPH of additional top-end speed by allowing the clutch to shift out further than the factory cover permits.
Everything assembled, calibrated, and ready to deliver more power, better belt grip, smoother shifting, and cooler operating temperatures from the moment it goes on the machine.
Why it matters
What's Included
How to install it
Download the printable install guide, or watch the video walkthrough.
Frequently asked questions
Everything you need to know before ordering.
Can I install KWI products myself?
Can I combine multiple products in one order?
Can I return or exchange a KWI product?
Do KWI products work with tuned, supercharged or turbo boosted machines?
Do you offer financing?
Do you offer round-trip shipping for send-in services like the Float Mod?
Do you provide installation instructions and videos?
Do you sell just parts, or only complete services?
Do you ship internationally?
Does installing KWI products void my Can-Am (BRP), Polaris, or Kawasaki warranty?
Does KWI work with aftermarket clutch components from other companies?
How do I know if I have a PDrive or QRS clutch?
How do I know which clutch kit or Float Mod is right for my machine?
How does the send-in process work?
How long is the turnaround for send-in services?
How much horsepower will I gain from KWI clutching?
How often should I inspect my clutches?
Is the Float Mod reversible?
What causes hard shifting in a Can-Am UTV?
What do I need to include when I send my clutches in?
What if my clutches need parts replaced beyond the Float Mod?
What is a clutch kit and why do I need one?
What is a CVT clutch and how does it work?
What is a "spinning secondary at idle" and why does it happen?
What is "clutch alignment" and why does it matter?
What is the DX3 Conversion?
What is the Groovix helix?
What is the KWI Float Mod?
What is the KWI warranty?
What machines does KWI support?
What payment methods do you accept?
What tools do I need to install KWI products?
What's the difference between the PDrive Float Mod and the QRS Float Mod?
Why do UTVs burn belts?
Will KWI products fit my Can-Am with an aftermarket transmission seal guard?
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