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Speedwerx - Polaris 850 Patriot & 850 Patriot Boost Stealth Cylinder Head
Speedwerx - Polaris 850 Patriot & 850 Patriot Boost Stealth Cylinder Head
Speedwerx - Polaris 850 Patriot & 850 Patriot Boost Stealth Cylinder Head
Speedwerx - Polaris 850 Patriot & 850 Patriot Boost Stealth Cylinder Head
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  • Load image into Gallery viewer, Speedwerx - Polaris 850 Patriot & 850 Patriot Boost Stealth Cylinder Head
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Speedwerx - Polaris 850 Patriot & 850 Patriot Boost Stealth Cylinder Head

Regular price
$359.95 USD
Sale price
$359.95 USD
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Speedwerx Stealth Cylinder Head // Polaris 850 Patriot / 850 Patriot Boost 

This new twist on our Stealth Cylinder Head design is the best head option on the market to improve the throttle response and acceleration of your machine. These heads are built from raw, unfinished head castings which offers several advantages over a full billet head or our traditional Stealth Head Mod with a billet dome. Starting with a raw casting means we aren't limited to recutting an already finished stock chamber- we can shape the combustion chamber exactly how we want it just like we would with a billet piece. The stock casting also enables us to retain all of the highly engineered cooling design advantages the OEM head design provides and works with our chamber design that increases the compression ratio to maximize power and performance on pump gas. They are also lighter that any billet design- the exterior profiling machine work we do shaves .4 lbs off the stock head which puts them at .8 to 1.5 lbs lighter than aftermarket billet heads. While we were at it, the head bolt bosses were machined so the bolts are now sealed with reusable o-rings to make for an easier and cleaner installation with no silicone or sealer needed. Best of all, you get all of this with the lowest cost of any aftermarket option. Sold outright- no core exchange needed.

  • Big Power Gains- +3-8 hp 
  • Retains Superior OEM Cooling Design
  • Lightweight- Save Up to 1.5 lbs 
  • Uses O-Rings on Head Bolts
  • 100% Made in the USA