Carrillo SC7486-1 Forged Piston & Ring Set Single 86.5mm 9:1 CR Hyundai G4KF 4B11T

The Carrillo SC7486-1 is a high-performance forged piston and ring set designed for Hyundai 2.0L G4KF and 4B11T turbocharged engines. This single piston kit features an oversized 86.5mm bore (+0.5mm) with a 9.0:1 compression ratio, engineered specifically for boosted applications including turbocharger, supercharger, and nitrous oxide systems.

Key Specifications:

• Bore: 86.5mm (3.406 inches) - +0.5mm oversize
• Compression Height: 1.181 inches (30.0mm)
• Compression Ratio: 9.0:1
• Stroke: 86mm
• Rod Length: 146mm
• Wrist Pin Diameter: 22mm (Note: OEM uses 24mm - aftermarket rods required)
• Ring Pack: 1.0mm x 1.2mm x 2.8mm
• Dish Volume: -5.9cc
• Weight: 315 grams

Construction & Features:

• Forged from high-strength 2618-T61 aluminum alloy for superior durability under high heat and cylinder pressure
• Dual pin oilers provide enhanced lubrication to the wrist pin
• Accumulator groove reduces ring flutter and improves ring seal
• Deep valve reliefs accommodate high-lift camshafts and oversized valves (+1mm)
• Custom skirt cam and barrel design for optimal piston stability
• Fully CNC machined and balanced to ±1 gram
• Pin lock grooves for easy lock removal and installation

What's Included:

• One forged piston
• High-performance ring set
• Wrist pin (gudgeon pin)
• Pin locks

Important Note: These pistons are designed for use with 22mm wrist pins and do not fit OEM connecting rods. Aftermarket connecting rods compatible with 22mm pins are required. Compatible with stock and oversized valves as well as stock and high-lift camshafts. Proper machining and verification of piston-to-wall clearance, ring end gaps, and deck height is required during installation.