Evolution Powersports - Polaris RZR Billet Blow Off Valve (BOV) Kit

Evolution Powersports designed this Blow Off Valve (BOV) specifically for small displacement factory turbocharged powersports engines. Unlike automotive BOVs, this valve features spring rates and flow capacity optimized for powersports applications.

Key Features:

• Tested to 500+ horsepower
• Simple install with no drilling required
• Body, piston, and cap machined from billet aluminum
• Cap is anodized and re-machined for easy gripping during spring tension adjustments
• Piston and body hard coated with impregnated Teflon anti-friction matrix
• Four sealing O-rings for leak-proof operation
• Produces the distinctive "blow off valve" sound turbo enthusiasts prefer
• Includes pre-filter to keep dirt and sand out of valve exhaust ports

Version 2.0 Improvements:

• Revised O-ring placement for better piston sealing
• Eliminated problematic bottom O-ring from previous version
• Hard anodized cap with deep grooves for improved grip during fine-tuning
• Enhanced aesthetics with chevron-design vents that provide additional piston O-ring support
• Crisper pressure relief due to improved seal on piston body

Fitment: All RZR Pro XP, Pro S/Turbo R, and XP Turbo/Turbo S models

Not recommended for mud bogging. For vehicles that will be submerged, consider the BRV (Diverter/Boost Recirculating Valve) instead.