The FIM today sent out a press release containing the full details of the rule changes announced by Carmelo Ezpeleta and Vito Ippolito at Jerez yesterday. Most of these have been discussed yesterday, but a few changes appear to have been missed by Ippolito when he made the announcements, and these are things which are certainly worthy of our attention.
Some of these had already been announced, such as the ban on electronic suspension and ceramic composite materials for brake disks. But others are new, and rather puzzling. Potentially useful technologies such as variable valve timing and variable valve lift is essentially old technology, and available on a number of road vehicles, including Honda's VFR800 sports tourer. But more mysifying is the ban on variable exhaust systems. The question is, will this ban mean that systems like Yamaha's EXUP system - going on for 20 years old - would not be permitted?