This head has twice the cooling capacity to keep your motor running cooler to maintain horsepower by staying below the 120 degree timing curve

The Polaris 850 with its huge 74mm stroke was just asking for a bigger bore and we have done our homework to bring you the 900cc Big Bore

Product Details

1mm oversize (12

Fuel controller required if running Performance pipe or Reeds

Exhaust Powder Lite / 1100 Turbo ('12-16) Category_Default Category/SXS/Tools & Misc This head has twice theThis Powder Lite Muffler is a must for anyone looking for big gains out of your 1100 Turbo! As free flowing as a straight pipe without being crazy loud but certainly much more throaty than stock. This muffler gains 13 15 HP on a stock machine and is a must for running your big boost programming. Not only a horsepower gain but shed nearly 15 lbs off of your sled! All mufflers are ceramic coated for a durable long lasting finish. Roughly 13 14 dB louder