Evolution Powersports was first in the industry to design and produce a Blow Off Valve (BOV) specifically for small displacement factory turbocharged engines. Virtually every BOV on the market was designed for automotive applications which have different requirements in terms of spring rates and flow capacity vs a powersports engine. Back in 2015 we decided to take a no-expense-spared approach to designing a BOV specifically for the powersports market.

No other BOV on the market offers the quality and fine-tuned refinement like an EVP BOV.

• Tested to 500+ horsepower
• Simple install, no drilling required
• The body, piston and cap are machined from billet aluminum
• The cap is anodized and re-machined for easy gripping for spring tension adjustments
• The piston and body are hard coated with impregnated Teflon anti friction matrix
• The design has 4 sealing O-rings for leak proof operation
• Has the “Blow Off Valve” sound that turbo customers crave
• Includes a pre filter to keep dirt/sand out of the valve exhaust ports
• Not recommended for mud bogging. Customer who submerge their vehicles should order our BRV

This product is exempt from the emission standards and related requirements of 40 C.F.R. § 1051 as provided by 40 C.F.R. § 1051.620, and California law [e.g., vehicle code§§ 27156 and 38391]. This product is sold only for use in connection with EPA -certified, purpose-built, nonroad vehicles used solely for closed course, nonroad competition/racing and not used for any recreational purpose or on public highways or right of ways maintained by and open to the public. This product is sold only in connection with machines that do not fall under state and/or federal noise or emission standards/regulations. Purchasers who/that purchase this product represent and warrant that the product is purchased only in connection with EPA -certified, emission-regulations-exempt and noise-regulations-exempt competition/racing vehicles as interpreted under applicable state and/or federal law. Questions: Call Evolution Powersports at (715) 247-3862.