Manley 618220CE-4 Platinum Extreme Duty Forged Dish Pistons 87mm Bore 4G63

The Manley 618220CE-4 Platinum Series Extreme Duty Forged Pistons are engineered for high-performance Mitsubishi 4G63 and 4G63T applications requiring maximum strength and durability. These pistons feature an 87mm bore (+2.0mm oversize) and are designed for 2.1L stroker builds with 94mm stroke and 156mm rod length.

Key Features:

• Forged from domestic 2618 high-strength aluminum alloy for superior strength and heat resistance
• Extreme Duty construction with vertical gas ports designed for high-horsepower racing engines
• Dish design with -17cc dome volume providing compression ratios of 8.5:1 (DSM) or 9.0:1 (Evo)
• Lightweight design with offset wrist pin for reduced piston slap and quiet cold starts
• Pressure balance groove for improved ring seal and reduced blow-by
• Cam and barrel skirt profiles for maximum power while minimizing cylinder wall wear
• Precision machined in one fixturing operation ensuring perfect ring groove to skirt squareness

Complete Kit Includes:

• Premium 9310 alloy steel wrist pins with .210" wall thickness and .866" (22mm) diameter
• Steel top ring sets with Napier second rings
• Round wire locks

Specifications:

• Bore Size: 87mm (+2.0mm oversize)
• Rod Length: 156mm (6.142")
• Stroke: 94mm (2.1L stroker)
• Compression Distance: 1.012"
• Dome Volume: -17cc (dish)
• Compression Ratio: 8.5:1 (DSM) / 9.0:1 (Evo)
• Piston Weight: Approximately 272 grams
• Recommended Piston Clearance: .0035" measured 1.100" from bottom of oil ring

Manley's Platinum Series pistons are trusted by professional engine builders and tuners worldwide for extreme duty applications including turbo, supercharged, and nitrous builds. These pistons are designed to handle the rigors of high-boost racing applications while maintaining long service life.