JE 321241L Piston Single Extreme Duty FSR (3.898 in. Bore, 1.315 in. CH, -19.90 CC) for GM LS1 Engine

Description JE 321241L Piston Single Extreme Duty FSR (3.898 in. Bore, 1.315 in. CH, -19.90 CC) for GM LS1 Engine

JE Pistons applies over 75 years of experience to its range of premium forged racing pistons for European, import, and sport compact applications.

Engineered, forged, and machined 100% in the USA, these pistons are Designed for each specific engine and racing application to provide durability and performance.

• Forged from 4032 aluminum for tensile strength and minimal thermal expansion
• Proprietary Forged Side Relief design minimizes friction and power loss while reducing skirt width, weight, and Wrist Pin length
• Application-dependent skirt coating reduces friction, piston skirt and cylinder Wall wear, and operating noise
• Application-dependent accumulator groove reduces combustion gas pressure and Piston Ring flutter while improving ring seal

Specifications:

• Piston Series: JE Pistons
• Cylinder Head: LSX/L92 12 DEG
• Bore Diameter: 3.898 IN
• Piston Head Type: Dish
• Compression Height: 1.315 IN
• Piston Volume: -19.90 CC
• Piston Material: 2618
• Piston Quantity: 1
• Forging Type: FSR
• Piston Orientation: Left
• Piston Average Weight: 421 GR
• Ring Set Included: No
• Top Compression Ring Thickness: 0.0600 IN
• Second Compression Ring Thickness: 0.0600 IN
• Wrist Pin Included: Yes
• 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: 0.170 IN
• Wrist Pin Retainer Included: Yes
• Ring Set Thickness: 1.50 MM x 1.50 MM x 3.00 MM