KB Hypereutectic Flat Top Piston Set - SB Chevy 283-400 - Bore Size: 4.030", Stroke: 3.250", Rod Length: 5.700" Kart Racing Gloves Rocker stud diameter: 7/16"

Rocker stud diameter: 7/16"

Pinion Mount

Stealth Pro Bandit

2006-2006 GMC Sierra 1500

KB Hypereutectic Flat Top Piston Set - SB Chevy 283-400 - Bore Size: 4.030", Stroke: 3.250", Rod Length: 5.700" Kart Racing Gloves Rocker stud diameter: 7/16"Keith Black pistons have several important advantages over conventional alloy pistons. High silicon content yields superior thermal and wear characteristics, greater strength, scuff and seizure protection, and resistance to cracking. High silicon content also keeps heat in the combustion chambers, eliminating heat transfer and improving combustion. Pistons are machined for 5 64" top, 5 64" second and 3 16" oil ring unless noted. Sold in sets of eight