EVP Blow Off Valve (BOV) Replacement Springs CHOOSE SPRING:Blue Spring This is a kit of

This is a kit of hardware used to remove the small portion of the heat shield at the factory clamp

Front/rear installation instructions

protection and compatibility with biofuels and particulate filters

Regular & XP Models

Both valves attach to the charge tube and open via manifold vacuum when the throttle closes to prevent compressor stall

EVP Blow Off Valve (BOV) Replacement Springs CHOOSE SPRING:Blue Spring This is a kit ofDESCRIPTION Replacement springs for EVP Blow Off Valves. Select stiffer springs for louder, less frequent pressure release, or softer springs for quieter, more frequent release. Yellow Soft Red Medium Blue Stiff Black Stiffest FITMENT EVP Blow Off Valve (BOV) Manufactured by Evolution Powersports. Official specs and resources: EvoPowersports. com. Product Disclaimers Installation Instructions Terms and Conditions