NEW PW50 BILLET TORQUE HEAD. AVAILABLE FOR SMALL BORE OR BIG BORE. 
This is Not your typical cheap internet head that isn’t close to what it should be. 
Our extensive time of research and testing compression ratios, dome angles and squish test. Have finally brought us to make it available to P-Dub hobbyists wanting that next power pump. 
Will work with a stock pipe or with our P-Dub50 pipe. We can set them up to run pump gas or race gas, small bore or big bore . You just let us know. 
Benefits: 
-We center plug the spark plug.
-Designed a dome with squish and angle. 
-Anodized dome pocket to help prevent carbon build up, helping prevent detonation.
-Pumped up compression up from stock 115- to 150-165 for pump gas. To 170-200psi for Race Gas. 
-Removed the head gasket with easy replaceable o-ring for more Bore capacity and better sealing for higher compression. Improving our squish. 
-added larger cooling fins. To capture that cool air with fin tunnels to direct cooling to cylinder. 
And… we also improved the option from the lawnmower spark plugs. To a better NGK plug used for stronger and better spark. Cleaning the throttle response and producing more Torque and RPM. Which is the same cooler spark plug we use on our RD350’s. Also helps prevent detonation.