Head fits 2008-2015 Polaris 800 CFI.  The new MDS 800 CFI head is dyno tested and creates approximately an 8 hp increase over the stock heads in the mid-range and 4-5 hp on top end! Does not require a fuel controller. MDS 800 CFI head is simply the best performance engine mod for your money! PERIOD. Pair this with the P1 clutch kit and get the best bolt on performance from your sled.


  • Application guide for Polaris 600’s:

    5000-10000 13.6 domes (naturally aspirated)

    3000-6000 13.1 domes(naturally aspirated)

    0-3000 12.5 (naturally aspirated)

    These are strictly guides .  Must run minimum of 91 octane fuel.

    This head fits (2008-2016) Polaris Pro 600