JE Pistons Big Block Nitrous Series Dome Top Pistons 293085R

JE Pistons big block nitrous series dome top pistons have ring lands designed for nitrous applications. Valve reliefs are designed to accept oversized valves and long-duration, wide-lobe separation camshafts, and they are also compatible with angle milled heads. Precision CNC-machined grooves accept 1/16, 1/16, 3/16 rings. They fit open chamber cylinder heads.Brand: JE Pistons
Manufacturer's Part Number: 293085R
Part Type: Pistons
Product Line: JE Pistons Big Block Nitrous Series Dome Top Pistons
HP Direct Part Number: JEP-293085R
UPC: 193564196651
Piston Rings Included: No
Bore (in.): 4.625 in.
Bore (mm): 117.475mm
Stroke: 4.250 in.
Engine Stroke Type: Stock
Actual Engine Displacement: 9.4L/571
Rod Length: 6.535 in.
Piston Style: Dome, with two valve reliefs
Piston Material: Forged aluminum
Compression Height (in.): 1.120 in.
Piston Head Volume (cc): +28.90cc
Wrist Pin Style: Press-fit or floating
Wrist Pin Retainers Included: Yes
Wrist Pin Included: Yes
Pin Diameter (in.): 0.990 in.
Piston Ring Thickness: 0.043 in. x 1/16 in. x 3/16 in.
File Fit: No
Gapless: No
Top Ring Thickness: 0.043 in.
Second Ring Thickness: 1/16 in.
Oil Ring Thickness: 3/16 in.
Remanufactured: No
Quantity: Sold individually.
Notes: Designed to fit right exhaust valve orientation. Oil rail support included. Will also work with 638 cubic in. engines with a 4.750 in. stroke and 6.700 in. connecting rod.