JE Pistons 377959 Lightweight Stock Car Flat Top Forged Piston Set, Small Block Chevy (4.030" Bore)

JE Pistons 377959 is a set of 8 high-strength, lightweight asymmetrical FSR (Forged Side Relief) flat-top pistons engineered for Chevrolet Small Block stock car racing with 2 or 4-barrel applications. Forged from 2618 aluminum, they feature a 4.030" bore, 1.250" compression height, -3.8 cc volume, 0.927" wrist pins, accumulator grooves, and double pin oilers for reduced friction and durability. Designed around a 3.480" stroke and 6.000" rods, they support compression ratios of approximately 11.3:1 (58 cc heads), 10.5:1 (64 cc), or 9.2:1 (76 cc). Wrist pins and round wire locks are included; 0.043"/0.043"/3 mm rings are not.

These pistons prioritize low reciprocating weight and race reliability for circle-track and similar high-performance SBC builds.

Piston, Forged, Flat Top, 4.030 in Bore, 1.250 in Compression Height, 0.043 x 0.043 x 3.0 mm Ring Grooves, Minus 3.80 cc, Small Block Chevy, Set of 8