FORD 372W ROD 6.200 SOLID DOME 1CC 2V KB HYPER PISTON SET

The United Engine & Machine Co KB255.030 is a set of 8 hypereutectic pistons designed for SB Ford 372W engines. These pistons feature a dome top with two valve reliefs and have a 4.030" bore size, a 3.640" crankshaft stroke, and a 6.200" rod length. The compression height is 1.440", and they utilize a centered wrist pin.

Keith Black pistons, like the KB255.030, are constructed from a low-expansion 390 alloy with 16% silicon, allowing for tighter piston-to-wall running clearance. Features include fully machined head and valve reliefs, triple spiral lock rings, CNC machined pin bores, an accumulator groove for compression ring seal, machined-in oil returns, diamond-finished skirts, and mini grooves to reduce scuffing and overheating. Wrist pins and spiral locks are included, but piston rings are not.