Product Description
Piston and Ring Kit, Hypereutectic, Dome, 4.030 in. Bore, Chrysler, Hemi, Kit
Brand: Keith Black/KB Pistons
Manufacturer's Part Number: KB290KTM-030
Part Type: Piston and Ring Kits
Product Line: Keith Black KB Performance Piston and Ring Kits
Bore (in): 4.030 in.
Bore (mm): 102.362mm
Piston Style: Dome, with two valve reliefs
Piston Material: Hypereutectic aluminum
Compression Height (in): 1.940 in.
Dome Height (in): 0.160 in.
Piston Head Volume (cc): -22.00cc
Wrist Pin Style: Press-fit orfloating
Pin Lock Rings Included: Yes
Pin Diameter (in): 0.984 in.
Gapless: No
File Fit: No
Top Ring Thickness: 5/64 in.
Top Ring Material: Iron
Top Ring Facing Material: Moly
Second Ring Thickness: 5/64 in.
Second Ring Material: Iron
Second Ring Facing Material: Cast iron
Oil Ring Thickness: 3/16 in.
Oil Ring Material: Stainless steel
Oil Ring Tension: Standard
Quantity: Sold as a kit.
Keith Black hypereutectic piston and ring kits include pistons made from 390 alloy and heat-treated to T6 standards, making 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, they have a lightweight, rigid-rib skirt design that stabilizes the piston in the bore. To complete the install, the Keith Black hypereutectic piston and ring kits feature OE-quality piston rings manufactured from ductile iron, and the compression rings have moly facings for extra durability. They'll seal mild to high-compression engines, help to protect against oil blowby, and feature standard ring end gaps for an easy installation.
