The race level exhaust (non TUV approved with the 80mm double walled tips) like on Nieue's 1M has been developed by Supersprint to our sound and tailpipe specification and will be an evolve product.
The quieter TUV system with 80mm rolled in tailpipes will be Supersprint's option on the 1M.
Here is the dyno chart for the full system with the evolve race exhaust.
