Mahle Motorsport Piston Set – BMW S55 (84mm Bore / 89.6mm Stroke / 144.35mm Rod / 22mm Pin / -10.5cc / 10.2CR) – Set of 6

Overview
The Mahle Motorsport piston set is engineered for the BMW S55 engine, delivering strength, durability, and precision for high-performance builds. Manufactured with Mahle’s advanced forging technology and surface treatments, these pistons are designed to withstand the extreme loads of high boost and track use while maintaining OEM-level reliability. This set of six pistons is ideal for both competition and high-power street applications.

Key Features

• 84mm bore size with 89.6mm stroke
• 144.35mm rod length compatibility
• 22mm piston pin design
• -10.5cc dish volume
• 10.2:1 compression ratio
• Forged construction for maximum strength and durability
• Special coatings for reduced friction and improved wear resistance
• Designed specifically for BMW S55 engines

Technical Specifications

• Part Number: 197879807
• Bore: 84mm
• Stroke: 89.6mm
• Rod Length: 144.35mm
• Pin Diameter: 22mm
• Dish Volume: -10.5cc
• Compression Ratio: 10.2:1
• Quantity: Set of 6 pistons

Vehicle Compatibility

• BMW S55 engine applications, including M3 F80 (2014–2018), M4 F82/F83 (2014–2020), and M2 Competition F87 (2018–2021)

Notes
Professional installation and proper tuning are recommended. This piston set is designed for use with high-performance builds and may require supporting modifications.