EVP UTV Polaris RZR Pro R Head Shim Kit
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Multi-layer steel construction designed for optimal sealing
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Full metal construction leaves no residue behind
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Extremely durable under high temperatures and boosts pressure
EVP engineers designed and manufactured the ultimate game-changer when it comes to lowering compression for the RZR Pro R. The Stock compression ratio on the N/A ProStar 2.0L engine runs high at 12.5:1, which is inadequate for any turbo upgrade/engine build running high boost and big horsepower. The new EVP Head Shim Kit for Pro R lowers compression to 10.8:1 to help reduce air/fuel temperatures and thus prevent detonation as well as pre-ignition.
EVP UTV Polaris RZR Pro R Head Shim Kit Features:
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Lowers stock compression ratio from 12.5:1 to 10.8:1 to better support high boost/horsepower applications
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Multi-layer steel construction designed for optimal sealing
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Full metal construction leaves no residue behind
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Extremely durable under high temperatures and boosts pressure
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Kit includes RZR Pro R Shimmed head Gasket, Manifold Spacer, and Valve Spacer
Fitment:
2022+ Polaris RZR Pro R Models