SBC PowerPak Piston Set 4.050 Bore FT -8.9cc

Piston and Ring - 21 Degree Flat Top - Forged - Flat Top - 4.050 in Bore - 1.250 in Compression Height - 1.0 x 1.0 x 2.0 mm Ring Grooves - Minus 8.90 cc - Small Block Chevy - Kit