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.
Features & Benefits
- 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
Specifications: Piston Set, 2618, Inv Dome/Dish, 4.130 Bore, 1.163 CD, 0.927 Pin, Set of 8
These pistons utilize our dedicated Forged Side Relief (FSR) forging that was specifically designed to increase strength.
Detailed Specifications
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Top Groove Width: 0.06000 in.
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Piston Volume: -22.00 cc
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Intake Depth: .145 in.
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Oversized Amount: 0.005
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Top Compression Ring Thickness: 0.0480 in.
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2nd Groove Width: 0.06 in.
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Second Compression Ring Thickness: 0.0600 in.
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Oil Ring Thickness: 0.149 in.
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Wrist Pin Wall Thickness: 0.150 in.
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Oil Groove Width: 0.15000 in.
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Ring Set Thickness: 1.20 MM x 1.50 MM x 3.00 MM
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Intake Diameter: 1.420 in.
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Exhaust Diameter: 1.750
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Exhaust Angle: 12
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Wrist Pin Length: 2.250 in.
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Intake Angle: 24
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Engine Stroke: 4.000 in.
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OEM Bore Diameter: 4.125
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Piston Average Weight: 439
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Wrist Pin Material: 5115 Low Carbon Steel, Case Hardened
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Connecting Rod Length: 6.125 in.
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Piston Quantity: 8
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Deck Height: 9.240 in.
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Wrist Pin Retainer Part Number: 927-073-MW
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Wrist Pin Part Number: 927-2250-15-51C
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Forging Type: FSR
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Cylinder Head: GM LS7
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Pro Seal Head Gasket: GM1021-051
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Ring Set - Recommended: JG31F8-4135-2
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Engine Family: LS
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Engine: LS7
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Piston Sub-Series: LS7 Inverted Dome
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Oversized: Yes
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Wrist Pin Included: Yes
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Wrist Pin Retainer Included: Yes
