Manley 647000C-6 Platinum Series Forged Piston Set BMW Bore - N55/S55 84mm

The Manley 647000C-6 Platinum Series Piston Set is a high-performance forged piston kit designed for BMW 3.0L N55 and S55 turbocharged engines. This complete 6-piston set features premium 2618 aluminum alloy forgings engineered to withstand the extreme demands of high-boost and high-horsepower applications.

Key Specifications:

• Bore Size: 84.0mm (standard bore)
• Compression Height: 1.276 inches
• Dish Volume: -10.5cc
• Compression Ratio: 10.2:1 (with 37cc chamber)
• Rod Length: 5.683 inches
• Stroke: 89.6mm
• Included Ring Set: 46840-6

Platinum Series Features:

• Domestic 2618 alloy forgings for superior strength and thermal stability
• Premium chrome moly tool steel wrist pins included
• Proven cam and barrel skirt profiles for maximum power with minimal cylinder wall wear
• Moly-coated skirts for reduced friction and quiet operation
• Precision-machined ring lands and grooves for enhanced ring seal and increased power output
• Unique single-operation fixturing ensures perfect ring groove to skirt squareness
• Offset wrist pin design for quieter cold starts

Complete Kit Includes:

• (6) Forged pistons
• (6) Premium piston ring sets from Total Seal
• (6) Chrome moly wrist pins
• (6) Round wire locks (spiral locks)

Manley Performance pistons are trusted by professional engine builders and tuners worldwide for their exceptional durability and consistent performance in demanding racing and high-performance street applications. The recommended piston-to-wall clearance is 0.0035 inches, measured 0.850 inches from the bottom of the oil ring groove.