Carrillo SC7700-4 Forged Piston & Ring Set BMW N20B20 84mm Bore

Designed for the BMW N20B20 platform at standard 84mm bore with a -9.7cc dish, this piston set is built to handle the demands of forced induction and high-output engine builds.

Key Specifications:

• Bore: 84.00mm (Standard)
• Stroke: 89.6mm
• Rod Length: 144.34mm
• Compression Height: 32.4mm
• Piston Head Volume: -9.7cc (Dish)
• Pin Diameter: 22mm
• Ring Part Number: CPT-3307PVD (Nitride PVD-coated)
• Piston Weight: 347g each

Key Features:

• Forged Aluminum Construction: High-strength forged alloy delivers superior strength-to-weight ratio compared to cast pistons, reducing reciprocating mass for improved engine responsiveness
• Dish Design with Valve Reliefs: Four-valve relief dish profile maximizes quench area while accommodating stock valve geometry
• Double Pin Oilers: Dual-fed reservoir design delivers twice the oil volume from the cylinder wall to the wrist pin for enhanced lubrication under high loads
• Radius Dome Profile: Engineered to maximize quench while minimizing hot spots that promote detonation
• Optimized Cam & Barrel Skirt: Precision-engineered skirt geometry promotes tighter clearances, reduced noise, better ring seal, and improved durability
• PVD-Coated Rings Included: Steel and nitride-coated carbon steel ring set included for superior wear resistance
• Compatible with Turbo, Supercharger, and Nitrous Applications

• 4x Forged aluminum pistons
• Ring set (CPT-3307PVD)
• Wrist pins (22mm)
• Wrist pin locks

Manufactured at CP-Carrillo's facility in Irvine, California, USA, the SC7700-4 represents the same piston technology trusted by professional motorsport teams worldwide. Each piston is precision-machined to exacting tolerances and subjected to rigorous quality control. Upgraded heavy-duty wrist pins are available separately for extreme power applications.