4P Pro 156v2 CNC Head Stroker Kits and are perfectly suitable for

and are perfectly suitable for your everyday street car

even replacement for critical human bones

Change bore sizes in seconds

This uses a 102mm Crankshaft

These cranks are available in any size very small to very large

4P Pro 156v2 CNC Head Stroker Kits and are perfectly suitable forThe NEW Pro 156v2 CNC cylinder head is the ultimate cylinder head for your street car. The original Pro 156 raised the bar and set the standard for entry level street cylinder heads by offering the highest quality in the industry and airflow that surpassed many very expensive race heads. The newest version of this head takes it a step further with improved airflow throughout the entire lift range, top to bottom. We spent countless hours balancing