Cast Pistons
for the BMW M10 Engine

New from Ireland Engineering

We had these M10 pistons manufactured as close to duplicates of the factory Mahle pistons as possible. Bore size is 90mm (1mm oversize), wrist pins and premium Deves rings are included.

They're available for all M10 cylinder heads - 121, E12, E21, 1.8i, etc.

Initially we'll be stocking 9.5 to 1 compression pistons (a good choice for street performance engines with premium fuel); other compression ratios – from 8 to 1 through 10.5 to 1 – will be available with about a two week lead time.

Features:

• Piston weight is very-close (within a few grams) of the factory piston.
• Standard BMW ring and wrist pin configuration.
• Skirts are coated for reduced friction and wear.
• Valve reliefs have been cut into the tops so higher lift cams can be used with no piston-to-valve clearance issues.
• These pistons can also be machined to fit the 3 liter and 3.2 liter M30 6 cylinder engines as well.

now available - CLICK for the 121 Piston or E12 Piston or E21 Piston