Carrillo SC7100-4 Pro-H H-Beam Connecting Rods

The CP Carrillo SC7100-4 is a complete forged piston and ring kit engineered for Honda B-Series 1.6L engines. Featuring an 81.0mm (3.189 in) standard bore, this kit is purpose-built for high-performance street and racing applications demanding superior strength, precise tolerances, and consistent power output.

Each piston is CNC-machined from high-strength forged aluminum using a dish-style crown with four valve reliefs, allowing clearance for high-lift camshafts and oversized valves without modification. The full-radius dome design and deep valve relief depths reflect CP Carrillo's race-derived engineering philosophy.

Key Specifications:

• Bore: 81.0mm (3.189 in) — Standard
• Stroke: 77.40mm
• Rod Length: 134.0mm
• Compression Height: 1.181 in (30.0mm)
• Piston Head Volume: +5.90cc
• Piston Style: Dish with four valve reliefs
• Piston Material: Forged aluminum
• Wrist Pin Diameter: 0.827 in — Press-fit or floating

Ring Package Included:

• Top Ring: 1.0mm steel
• Second Ring: 1.2mm cast iron
• Oil Ring: 2.8mm
• Wrist pin retainers included

Manufactured at CP Carrillo's Irvine, California facility using 5-axis machining and a climate-controlled inspection process, these pistons deliver the precision tolerances and reliability demanded by serious engine builders. The SC7100-4 is sold as a complete 4-cylinder kit with pistons, rings, wrist pins, and retainers.