Normally Aspirated, mid to high compression ratios at 12.5 * 13.5 * 14 (Max compression) - Pistons are good for 100 shot of Nitrous - milled inside for minimum weight but still retaining strength - if you don't see what you need, we can custom make for you
#pistons will fit B16A - B18A-B - B18c - B20 engines
B16A pistons will yield about 1 point less compression
