M20 2.5L Mahle Piston Set

Mahle is an OE piston supplier for BMW — and this oversize piston set is the stock replacement we trust for every M20B25 build that comes through our shop, from daily Touring builds to full SpecE30 race engines.

• Bore Size: 84.5mm (oversize)
• Compression Ratio: 8.8:1 (stock replacement)
• Includes: Piston rings, wrist pins, and wrist pin clips
• Fitment: BMW M20B25 engine

These are the same Mahle pistons we run in-house — precision-fit, proven reliable, and ready to drop in.