GAIN MAX POWER WITHOUT BREAKING THE BANK ON YOUR POLARIS 850, 850 BOOST, OR 9R // Speedwerx USA

This is your best option for higher compression heads on the market! These heads are designed to improve throttle response and acceleration. These heads are built from stock head cores so we can cut the dome chamber how we want to and maximize gains. The stock casting material also cools much better than billet options you will find on the market. These head kits are .4 lbs light than stock and .8 to 1.5 lbs lighter than the other billet heads on the market. Stock compression ratios are 12.5 on all 850 / 850 BOOST and 9R models. Head bolts are sealed with reusable o-rings to make installation cleaner and easier. If you are unsure on which head is best for you please call Speedwerx 651-982-6020 to ensure our head kit is best for your application 💥
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