Carrillo SC7121-1 Forged Piston for Honda B-Series 84.5mm Bore

The Carrillo SC7121-1 is a high-performance forged piston designed for Honda B-Series engines. Manufactured from high-strength 2618-T61 aluminum alloy, this piston delivers exceptional durability under high heat and extreme cylinder pressures, making it ideal for turbocharged, supercharged, nitrous, and naturally aspirated applications.

Key Specifications:

• Bore: 3.327 inches (84.5mm)
• Compression Height: 1.181 inches
• Piston Style: Dish design with four valve reliefs
• Piston Head Volume: +5.30cc
• Rod Length: 138.000mm
• Wrist Pin Diameter: 0.827 inches
• Wrist Pin Style: Press-fit or floating
• Material: Forged aluminum alloy

Complete Kit Includes:

• Forged piston
• High-performance piston rings
• Wrist pin (gudgeon pin)
• Wrist pin retainers (locks)

Advanced Features:

• Fully CNC-machined and balanced to ±1 gram
• Custom skirt cam and barrel design for optimal expansion
• Deep valve relief depth accommodates high-lift camshafts
• Designed for +1mm valve sizes
• Accumulator grooves for enhanced oil control
• Double pin oilers with force-fed oil ring
• Pick lock grooves for easy removal
• No file-fit required

Compatible with B16A, B18A, B18B, and B18C cylinder heads. Each CP-Carrillo piston is engineered using sophisticated computer modeling and manufactured with 5-axis CNC machining capability at their Irvine, California facility. All pistons undergo rigorous inspection in their climate-controlled quality control department using computerized electronic equipment.