I know about the Mahle pistons but mine needed some TLC. I have an odd set of 3 with the fourth being from a different set so I needed to get that sorted hence buying the Cosworth Racing Forged jobs on the advice of Mountune. This way I can get the whole bottom end renewed and balanced during the rebuild, knowing that all the parts are fully uprated. All for peace of mind.

Afterall my car will be spending about 8 hours a day at 7K revs bouncing off limiters on the drift track.