Polaris 3023283 / 3023976 Cylinder Head for Polaris 850 Boost - BCM head mod

[trdehmer]

BCM Head Mod for Polaris Boost. This has not been run/used since the modification was done by BCM Performance. He modifies a stock 850 or 850 Boost Head. It is meant to be a little more conservative on fuel requirements (slightly lower compression) in case of poor octane fuel, or run more boost on 850 Boost's running a tune. Asking $175 shipped to the lower 48 states. Home