JE Pistons

Manufacturer Part NumberJE Pistons 311977

 

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 SeriesJE Pistons
Cylinder HeadLS 12 DEG/15 DEG COMBO VR
Bore Diameter4.005 IN
Piston Head TypeFlat
Compression Height1.115 IN
Piston Volume-5.00 CC
Piston Material2618
Piston Quantity8
Forging TypeFSR
Piston Average Weight381 GR
Ring Set IncludedNo
Top Compression Ring Thickness0.0480 IN
Second Compression Ring Thickness0.0600 IN
Oil Ring Thickness0.149 IN
Wrist Pin Part Number927-2250-15-51C
Wrist Pin Material5115 Low Carbon Steel, Case Hardened
Wrist Pin Outer Diameter0.927 IN
Wrist Pin Length2.250 IN
Wrist Pin Wall Thickness0.150 IN
Wrist Pin Retainer IncludedYes
Ring Set Thickness1.20 MM x 1.50 MM x 3.00 MM