5.2 ENGINE (Appendix 6)
Any engine up to max 2.5 ccm allowed.
.18 engine legal for 200mm IC?
Also the 200mm class with the 2.1 cc engines will have to look for other mufflers within 2 years. Also for this class 3-chamber mufflers will be mandatory as from 2008/2009. Also here we will specify the design of some parts of the muffler.