Carrillo SC7656-1 Forged Piston for Toyota Bore CR Pistons - 4AG 20V 81.5mm 9.0 1

The Carrillo SC7656-1 is a high-performance forged aluminum piston designed for Toyota 4AG 20V engines. This single piston features a 3.209 inch (81.5mm) bore with a +0.5mm oversize, 1.208 inch compression height, and 9.0:1 compression ratio. Engineered for turbocharged, supercharged, and nitrous applications, this piston is built to handle extreme cylinder pressures.

Key Features:

• High-strength 2618-T61 aluminum alloy forging for superior durability under high heat and boost
• Fully CNC-machined and balanced to within +/- 1 gram for precise weight matching
• Deep valve reliefs accommodate high-lift camshafts and oversized valves up to +1mm
• Custom skirt cam and barrel design optimized for maximum performance
• Accumulator grooves and double pin oilers force-fed from oil ring groove
• Compatible with 0.787 inch wrist pin diameter
• Piston ring thickness: 1.0mm x 1.2mm x 2.8mm (top/second/oil)
• Dish-style piston head with -8.7cc volume and three valve reliefs

This piston is designed for 77mm stroke and 122mm connecting rod length. Each CP-Carrillo piston kit includes high-performance rings, wrist pin, and pin locks. CP-Carrillo pistons are manufactured in Irvine, California using sophisticated computer modeling and advanced 5-axis machining technology to create precision engine components trusted by professional racing teams worldwide.