We have been working with the people at JE on our pistons since 1978. Through our racing engine research and on track experience we have continuously modified our designs for better performance. We won four SCCA National Championships developing the same piston designs you can now buy off our shelf. Professional engine builders all over the world use our pistons.

• Compression of 12.5:1 is measured with standard head of 112mm height and 1.4mm Reinze gasket
• 3mm deeper valve reliefs accommodate most performance cams
• Larger diameter valve reliefs will accommodate oversize 47mm intake and 41mm exhaust valves
• Standard 38mm exhaust valves are best combination for power so exhaust reliefs are standard diameter.

This piston set includes standard wrist pins (109 grams) and conventional Total Seal Ring Set rings.  You should consider the following upgrades: