JE 324019R Piston Single FSR (4.135 in. Bore, 1.165 in. CH, 5.40 CC) for GM LS Engine ymm_48 Lab tested in our state-of-the-art

Lab tested in our state-of-the-art testing facilities featuring our industry best procedures including wind tunnel

Rear -60 to -15

or in-between gear changes

SAE Viscosity Grade (Motor Oil): 5W30

We've re-set the bar for Subaru performance intakes

JE 324019R Piston Single FSR (4.135 in. Bore, 1.165 in. CH, 5.40 CC) for GM LS Engine ymm_48 Lab tested in our state-of-the-artDescription JE 324019R Piston Single FSR (4. 135 in. Bore, 1. 165 in. CH, 5. 40 CC) for GM LS Engine JE Pistons applies over 75 years of experience to its range of premium forged racing pistons for European, import, and sport compact applications. Engineered, forged, and machined 100% in the USA, these pistons are Designed for each specific engine and racing application to provide durability and performance. Forged from 4032 aluminum for tensile