CP-Carrillo SC7609-4 Forged Piston & Ring Set 83mm Bore Audi VW 1.8L 20V Stroker

Featuring an 83.00mm (+0.5mm over) bore, 92.8mm stroke, 144mm rod length, and a 1.160-inch compression height, this dish-style piston with single valve relief is purpose-built for high-performance and forced-induction builds.

Key Specifications:

• Bore: 3.268 in. (83.00mm) — +0.5mm over standard
• Stroke: 92.80mm (stroker application)
• Rod Length: 144.00mm
• Compression Height: 1.160 in.
• Piston Head Volume: -16.00cc (dish)
• Piston Style: Dish with single valve relief
• Piston Material: Forged aluminum (2618-T61 alloy)
• Pin Diameter: 0.787 in. (20mm)
• Ring Thickness: 1.00mm × 1.20mm × 2.80mm

Standard CP-Carrillo Features:

• Deep valve reliefs to accommodate high-lift camshafts
• Large valve reliefs sized for +1mm valves
• Custom skirt cam and barrel design for optimized ring seal and reduced noise
• Accumulator grooves to collect excess blow-by and reduce top-ring flutter
• High-performance ring package included
• Fully CNC-machined and balanced to ±1 gram
• Double pin oilers force-fed from oil ring groove
• Pin lock grooves for easy lock removal
• Wrist pins and retainers included

CP-Carrillo pistons are manufactured using 5-axis CNC machining and proprietary tooling with computerized electronic inspection to hold the tightest tolerances in the industry. Built from 2618-T61 forged aluminum alloy, these pistons deliver the strength and durability required for turbocharged, supercharged, and high-RPM performance applications.