KB Hypereutectic Flat Top Piston Set - SB Chevy 283-400 - Bore Size: 4.030", Stroke: 3.250", Rod Length: 5.700" Kart Racing Gloves DynoMax Universal Y-Pipe

DynoMax Universal Y-Pipe

Brass / Aluminum

Rubber Bushings

Pinion Mount

KB Hypereutectic Flat Top Piston Set - SB Chevy 283-400 - Bore Size: 4.030", Stroke: 3.250", Rod Length: 5.700" Kart Racing Gloves DynoMax Universal Y-PipeKeith 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