JE Pistons Audi R8 / Lamborghini Gallardo 5.2L V10 84.50mm Bore 10.5 CR Set of 10 - 361281

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 European, import and sport compact 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 drift 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
• Includes high-quality wrist pins, locks, and JE Pro Seal premium piston rings
• Made 100% in the USA

Specifications: Piston Set, 2618, Inv Dome/Dish, 3.327 Bore, 1.086 CD, 0.787 Pin, Set of 10.

These pistons utilize our dedicated Forged Side Relief (FSR) forging that was specifically designed to increase strength.

Detailed Specifications

• Piston Volume: -3.70 cc
• Exhaust Depth: .160
• Intake Depth: .160 in.
• Top Compression Ring Thickness: 0.0400 in.
• Top Groove Width: 0.04000 in.
• 2nd Groove Width: 0.048 in.
• Second Compression Ring Thickness: 0.0480 in.
• Oil Ring Thickness: 0.111 in.
• Oil Groove Width: 0.11100 in.
• Wrist Pin Wall Thickness: 0.210 in.
• Exhaust Diameter: 1.510
• Intake Diameter: 1.510 in.
• Wrist Pin Length: 2.250 in.
• Exhaust Angle: 24
• Intake Angle: 24
• Engine Stroke: 3.654 in.
• Engine: 5.2L FSI R8 V10
• Cylinder Head: 5.2L FSI V10
• Connecting Rod Length: 6.063 in.
• Bore Diameter: 84.50 mm
• Wrist Pin Material: 9310 Nickel Carbon Steel Alloy
• Forging Type: FSR
• Accumulator Groove: Yes
• Pin Fit: Yes
• Ring Set Included: Yes
• Skirt Coat: Yes
• Smooth Crown Finish: Yes