Keith Black Hypereutectic Piston Set

The Keith Black Pistons KB379-030 is a set of hypereutectic aluminum pistons designed for high-performance applications. These pistons are suitable for marine, drag race, circle track, street, or towing builds. They feature a low-expansion 390 alloy with 16 percent silicon for tighter running clearance.

Key features include fully machined head and valve reliefs, triple spiral lock rings, and CNC machined pin bores. The design incorporates an accumulator groove for improved ring seal, machined-in oil returns, diamond-finished skirts, and mini grooves to reduce scuffing. Wrist pins and spiral locks are included.