Description

BMW 84.50mm PowerPak Piston Kit – MAHLE Motorsports 197841325

Features: 

• Bore: 84.50mm

• Stroke: 89.6mm

• Rod Length: 145.05mm

• Compression Height: 31.7mm

• Pin Diameter: 22mm

• Piston Crown Volume: -21.5cc

• Weight: 314g

• Compression Ratio: 9.6:1

MAHLE Motorsport is the Piston Technology Leader, in particular when it comes to understanding the unique needs of the BMW community. The newest piston in the lineup features MAHLE’s 2618 alloy, chosen for it’s high temperature strength characteristics. The pistons are dual coated with phosphate and MAHLE’s Grafal® skirt coating for greatly reduced drag and wear. For maximum durability, the top ring grooves are hard anodized to protect against micro-welding.