MAHLE 197859642 Forged Piston Set BMW S85 V10 92.50mm Bore High Compression

The MAHLE 197859642 Motorsports forged piston set is engineered for BMW S85 B50 5.0L V10 engines, delivering high-compression performance with precision German engineering. This complete set includes 10 pistons and performance ring sets, designed as a drop-in assembly for engine rebuilds and performance upgrades.

Specifications:

• Bore: 92.50mm (oversized for increased displacement)
• Compression height: 27.3mm
• Stroke: 75.2mm
• Rod length: 140.7mm
• Wrist pin diameter: 21mm
• Dome volume: 12.2cc
• Compression ratio: 12.3:1
• Piston weight: 372 grams per piston
• Set includes 10 pistons with rings

Construction and Features:

• Forged from M142 low-expansion aluminum alloy for exceptional strength and thermal stability
• Anti-friction skirt coating reduces drag and improves efficiency
• Forced pin oiler system increases wrist pin lubrication
• CNC precision-machined pin bores for tight tolerances
• Includes 20mm high-quality steel wrist pins
• Performance ring set: 1.0mm, 1.2mm, and 2.8mm widths
• Steel nitrided top ring for wear resistance
• Race-proven round wire locks included

MAHLE brings over 80 years of piston manufacturing expertise, supplying everything from OEM applications to Formula 1 racing. These Motorsports pistons are ready to install with minimal preparation, making them ideal for serious engine builders and performance enthusiasts seeking reliable high-compression power.