JE Pistons Big Block Inverted Dome Top Pistons 257949

As the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its wide range of premium forged pistons for domestic applications, and their performance has been proven in victory lane time and time again.

JE Pistons big block inverted dome top pistons are forged using 2618 aluminum, yielding high-tensile strength needed for high-demand performance applications, and they are designed specifically for each engine and use application to provide optimized performance durability. They feature JE Pistons' proprietary Forged Side Relief (FSR) forging design to minimize friction and power loss with reduced skirt width and save additional weight with a shorter wrist pin. Their precision CNC-machined ring grooves accept 1/16, 1/16, 3/16 in. rings (not included). JE big block inverted dome top pistons are available in different size specs, and can be ordered individually or in larger sets.
Brand: JE Pistons
Manufacturer's Part Number: 257949
Part Type: Pistons
Product Line: JE Pistons Big Block Inverted Dome Top Pistons
HP Direct Part Number: JEP-257949-8
UPC: 193564047427
Piston Rings Included: No
Bore (in.): 4.560 in.
Bore (mm): 115.824mm
Stroke: 4.000 in.
Engine Stroke Type: Stroked
Rod Length: 6.535 in.
Piston Style: Dish, with single valve relief
Piston Material: Forged aluminum
Compression Height (in.): 1.395 in.
Piston Head Volume (cc): +28.00cc
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: 1/16 in. x 1/16 in. x 3/16 in.
File Fit: No
Gapless: No
Remanufactured: No
Quantity: Sold as a set of 8.
Notes: Oil rail support included.