"The YZF-R6 was the ﬁrst production motorcycle with a ﬂy-by-wire throttle system—for ﬂawless response under all conditions"
Combining light weight with razor-sharp handling and a wailing top-end punch, Yammie’s 600cc screamer has been a potent tool that perennially competes for top honors in its class.
Yamaha is claiming the changes have made the 2008 Yamaha R6 the most advanced production 600 class motorcycle it has ever made.
See the rest of the 2008 Yamaha range, here.
The changes are clearly aimed at increasing the racing success of the 599cc Yamaha R6 – the engine has titanium valves, increased compression ratio from 12.8:1 to 13.1:1 for improved response. The full Yamaha explanation is below.)