Look at the 2011 JGR Yamaha 450, a heatshield between Shock and exhaust. There seems to be a little problem with heat for the shock on the new Yamis. Ivé talked to Ohlins about it and they admit that they had some issues with setting up the Rinaldi factory Yamaha´s in the GP´s aswell, the shock gets extremely warm at the end of long motos. Sure the normal exhaust of the other manufacturers also goes near the shock but on the Yamahas you have the complete exhaust back there, very near the shock. Maybe this is a solution ?