4P Outlaw V2 GSR CNC Head R40 They are durable and can

They are durable and can be cleaned and reused over and over

with peak power moved up the RPM band

90mm Bore is 15:1

4 Piston Racing Logo is raised stitch

4P Outlaw V2 GSR CNC Head R40 They are durable and canOutlaw V2 More CFM, More Horsepower 4P CNC heads make significantly more power, AND last up to 3 times longer than the competition. That is what our cylinder head program is all about pumping out the biggest horsepower, keeping it responsive, and doing so with increased longevity. With a high power turbo car, your biggest battle is dealing with extreme exhaust temperatures. Our heads have design features that pull heat away from the valve and improve