Carrillo SC7512-4 Forged Piston and Ring Mini Cooper S Bore CR - Set 78mm 8.3 1

The Carrillo SC7512-4 is a complete forged aluminum piston and ring set designed for 2002-2006 Mini Cooper S 1.6L Tritec engines. This high-performance engine rebuild kit includes four precision-machined pistons with matching piston rings, wrist pins, and retaining locks for a complete installation.

Key Specifications:

• Bore: 78.0mm (3.071 inches) - +1.0mm oversize
• Compression Ratio: 8.3:1
• Compression Height: 1.043 inches (26.49mm)
• Piston Style: Dish design with no valve reliefs
• Piston Material: 2618 forged aluminum
• Rod Length Specification: 131.5mm
• Wrist Pin Diameter: 21mm (0.827 inches)
• Ring Pack Size: 1.0mm / 1.2mm / 2.8mm
• Wrist Pin Style: Press-fit or floating

• Complete piston ring sets
• Wrist pins (pre-fitted)
• Wrist pin retaining locks

CP-Carrillo pistons are engineered through extensive research and development for high-performance and racing applications. These forged pistons are designed to accommodate oversized valves and high-lift camshafts, making them ideal for both street performance and competitive motorsports use. The 2618 forged aluminum construction provides superior strength and durability under extreme conditions.

Performance Features:

• Anti-detonation grooves to protect the top ring
• Accumulator groove in the second ring land to reduce blow-by
• Precision-machined ring grooves for optimal sealing
• +2.20cc piston head volume
• Lightweight forged construction for reduced reciprocating mass

This piston set is compatible with the Mini Cooper S Tritec T16B4 engine (1600cc, DOHC, 16-valve, supercharged I4). The +1.0mm oversize bore allows for cylinder reconditioning and performance upgrades.