JE Pistons

Manufacturer Part Number JE Pistons 311903

 

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. Engineered, forged and machined 100% in the USA, JE Pistons are designed for each specific engine and racing application to provide the ultimate combination of durability and performance. From dirt track to drag strip, JE Pistons’ performance is proven in victory lane time and time again. Equip your engine with the best in forged pistons.
 

  • Forged in the USA using 2618 aluminum, yielding high tensile strength needed for high-demand performance applications
  • Designed specifically for each engine and use application to provide optimized performance durability
  • Proprietary Forged Side Relief (FSR) forging design minimizes friction and power loss with reduced skirt width and saves additional weight with a shorter wrist pin
  • Skirt coating (depending on application) reduces friction and wear on piston skirts and cylinder walls while simultaneously reducing operating noise
    Accumulator groove (depending on application) helps reduce pressure from combustion gases, reducing ring fluttering and improving ring seal for consistent power
  • Made 100% in the USA

Specifics:

 

Piston Series JE Pistons
Cylinder Head GM LS7 / LSX 12 DEG
Bore Diameter 4.1275 IN
Piston Head Type Flat
Compression Height 1.163 IN
Piston Volume -2.00 CC
Piston Material 2618
Piston Quantity 8
Forging Type FSR
Piston Average Weight 432 GR
Ring Set Included No
Top Compression Ring Thickness 0.0480 IN
Second Compression Ring Thickness 0.0600 IN
Oil Ring Thickness 0.1175 IN
Wrist Pin Part Number 927-2250-15-51C
Wrist Pin Material 5115 Low Carbon Steel, Case Hardened
Wrist Pin Outer Diameter 0.927 IN
Wrist Pin Length 2.250 IN
Wrist Pin Wall Thickness 0.150 IN
Wrist Pin Retainer Included Yes
Ring Set Thickness 1.20 MM x 1.50 MM x 3.00 MM