Product Description
Brand: Keith Black/KB Pistons
Manufacturer's Part Number: KB400-STD
Part Type: Pistons
Product Line: Keith Black KB Performance Pistons
Bore (in): 4.250 in.
Bore (mm): 107.950mm
Piston Style: Dome, with single valve relief
Piston Material: Hypereutectic aluminum
Compression Distance (in): 1.908 in.
Dome Height (in): 0.200 in.
Piston Head Volume (cc): -6.00cc
Wrist Pin Style: Press-fit or floating
Pin Diameter (in): 1.094 in.
Piston Ring Thickness: 5/64 in. x 5/64 in. x 3/16 in.
Quantity:Sold as a set of 8.
Notes: Solid dome design.
Keith Black hypereutectic pistons are made from 390 alloy and heat-treated to T6 standards, which makes them 30 percent stronger than ordinary untreated hypereutectics. Their 100 percent CNC-machined crowns, high upper compression-ring location, gas-accumulator groove, drilled oil returns, and spiral-lock retainer grooves make these pistons outstanding for performance applications. On top of that, Keith Black's hypereutectic pistons have a lightweight, rigid-rib skirt design that stabilizes the piston in the bore. All of this adds up to pistons that fit tighter than forged types, provide improved oil control, reduce blowby, increase ring life, eliminate cold start-up knocking, and won't cost you an arm anda leg!
