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Arctic Cat Spindles With 1
Internally & Mechanically Baffled
2021 650 INDY VR1 137
External Wastegate: For the price of the "other guys" internal kit
primary spring
Polaris 850 Turbo Blow Off Valve ( BOV ) Kit 9rtki Arctic Cat Spindles With 1RPM Polaris 850 Turbo BOV Kit RPM is not new to the BOV industry by any means. We have created this BOV and its spring rate specifically for the factory 850 Turbo Polaris based on its vacuum drawn at idle and while NOT under boost. Our kit uses a Patent Pending boost refence port that installs post TB's and before the reed valves. The RPM BOV kit not only improves throttle response but takes the stress of the turbo flutter off the turbine wheel
