ProMaxx Performance

The porting of performance cylinder heads has long been an essential part of attaining maximum horsepower. ProMaxx Performance began business by revolutionizing the CNC cylinder head market. They specialize in cylinder heads for small block Chevy, big block Chevy, and small block Ford. ProMaxx designed their own CNC programs to port chambers, bowls, and runners to maximize air and fuel flow. JEGS stocks ProMaxx Performance Products at the best prices so get the most out of your vehicle today!

ProMaxx Performance Cylinder Head for Cummins Diesel 5.9L 6BT 12V Assembled

ProMaxx Performance Cylinder Head GM 6.5L Diesel Assembled Straight Standard

ProMaxx Performance 185cc Aluminum Cylinder Heads Small Block Chevy

ProMaxx Performance Cast Iron Small Block Chevy Vortec Cylinder Heads Assembled

ProMaxx Performance 185cc Aluminum Cylinder Heads Small Block Chevy

ProMaxx Performance 200 Series Aluminum Cylinder Heads Small Block Chevy

ProMaxx Performance GM LS Series Gold Dual Valve Spring Kit Includes: 16 ProMaxx Dual Gold Springs

ProMaxx Performance 225cc Aluminum Cylinder Heads Small Block Chevy

ProMaxx Performance MAXX Series Aluminum Cylinder Heads As-Cast

ProMaxx Performance 190cc Aluminum Cylinder Heads Small Block Chevy

ProMaxx Performance Replacement Cast Iron Cylinder Head

ProMaxx Performance 225cc Aluminum Cylinder Heads Small Block Chevy

Filter By Vehicle