With the new M3 Touring Class in BMW CCA Club Racing Elephant Motorsports wanted to develop a piston that would meet the rules but maximize all of the allowances including overbore and compression ratio. We find other offerings to fall short of the allowances or do not meet the rules strictly.
These pistons meet all class rules including:
Wrist pin weight
Full round piston
Maximum allowable overbore of 94.4mm
Maximum allowable compression ratio of 11:1.
These forged aluminum pistons from JE are also available (and allowed within class rules) with crown and skirt coatings. They can also be had in other configurations such as diameter, compression ratio, etc. Pistons sets come complete with pistons, rings, wrist pins, clips, and documents.
Currently these are custom order and delivery time is 3-4 weeks. Expedited delivery is available for an additional fee. Other diameters are available as well, please inquire.