JE Pistons SBC FSR TOUR SERS GP Set of 8 Pistons - 258029

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, Flat Top, 4.035 Bore, 1.250 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

• Piston Volume: -4.10 cc
• Intake Depth: .290 in.
• Top Compression Ring Thickness: 0.0436 in.
• Top Groove Width: 0.04360 in.
• 2nd Groove Width: 0.044 in.
• Second Compression Ring Thickness: 0.0440 in.
• Oil Ring Thickness: 0.119 in.
• Oil Groove Width: 0.11900 in.
• Wrist Pin Wall Thickness: 0.150 in.
• Exhaust Diameter: 1.870
• Intake Diameter: 2.250 in.
• Wrist Pin Length: 2.350 in.
• Exhaust Angle: 22.5
• Intake Angle: 22.5
• Engine Detail: 23 Degree
• Engine Stroke: 3.500 in.
• Piston Average Weight: 363 g
• Wrist Pin Material: 5115 Low Carbon Steel, Case Hardened
• Connecting Rod Length: 6.000 in.
• Piston Quantity: 8
• Cylinder Head: CHEVROLET 23 DEG 20/30
• Forging Type: FSR
• Engine: Small Block
• Engine Family: Small Block
• Accumulator Groove: Yes
• Combo 2: Yes
• Contact Reduction: Yes
• Double Pin Oilers: Yes
• Lateral Gas Ports: Yes
• Pin Fit: Yes