Mahle Motorsport Powerpak Pistons for BMW S54
We are your best source for Mahle Pistons for your S54 in various compression ratios including the OEM 11.5 CR piston which is hard to find and would cost double if you bought from the dealer. If you're building a racing engine we recommend the 12.5 CR piston and running 100+ AKI fuel. For turbo builds up to 700WHP we highly recommend the Mahle 9.0 CR Piston using its heavy wall wrist pin that comes standard to handle that cylinder pressure. All of Mahle's Powerpak pistons for the S54 are the 2618 alloy.
The 87.25mm diameter is a new addition and is the most commonly used size we use in our shop. We use 11.6CR for street builds and the 12.5CR for racing engines. This allows for a second rebuild down the line on the same block.
This is a set of extremely high quality Mahle PowerPack pistons for the S54B32 engine. Mahle Powerpack pistons are extremely high quality pieces which provide improvements in strength over OEM pistons without some of the sacrifices sometimes found in other forged pistons. Mahle Powerpack pistons are precision forged from 2618 alloy, a low expenasion rate aluminum. They all feature forged side reliefs, reducing the weight of the overall package. They also use slipper skirt designs, reducing friction and further reducing weight. Mahle PowerPack pistons feature ultra flat ring grooves, which promote excellent ring seal and most importantly reduce the chances of micro-welding during break in. Every set of Mahle PowerPack pistons comes with their exclusive Grafal skirt coating, which is not only anti-friction but also offers impact absorbing qualities, reducing piston noise and decreasing stresses in the piston skirt.
Mahle PowerPack Pistons are an excellent choice for those looking for increases in strength while maintaining a lightweight piston with oem fit and finish. They have 21mm wrist pins so they will require a set of rods with 21mm pins to match.