Carrillo SC7659-1 Forged Piston Set Toyota 4AGE 20V 81.5mm 12.0:1 CR

The Carrillo SC7659-1 is a high-performance forged piston set engineered specifically for Toyota 4AGE 20V engines. Designed for naturally aspirated racing applications, these pistons deliver exceptional strength and reliability under high-stress conditions.

Key Specifications:

• Bore: 81.5mm (+0.5mm oversize)
• Compression Ratio: 12.0:1 (naturally aspirated applications)
• Compression Height: 30.7mm (1.208 inches)
• Stroke: 77mm
• Rod Length: 122mm
• Pin Diameter: 20mm
• Piston Weight: 281 grams
• Ring Pack: 1.0mm x 1.2mm x 2.8mm
• Ring Part Number: CPN-3209

Premium Construction:

• Manufactured from high-strength 2618-T61 aluminum alloy forgings for exceptional durability
• Fully CNC-machined and balanced to +/-1 gram for precise performance
• Compatible with oversized valves and high-lift camshafts
• Deep valve relief depth accommodates aggressive cam profiles
• Custom skirt cam and barrel design optimizes piston stability

Complete Kit Includes:

• Four (4) forged pistons
• High-performance piston rings matched to the piston design
• Wrist pins (gudgeon pins)
• Pin locks

CP-Carrillo pistons are engineered using sophisticated computer modeling and manufactured with advanced 5-axis CNC machining for optimum performance. The 2618-T61 aluminum alloy offers excellent durability under high heat and elevated cylinder pressures, making these pistons ideal for high-performance naturally aspirated builds. Professional installation and proper machining verification of piston-to-wall clearance, ring end gaps, and deck height are required for optimal performance and longevity.