Ear plugs !!
The best addition for the Tracer.
Rode to see my mum today, a hour of nice a/b roads then a hour on the A303/M3,ear plugs in as normal,no worries with excess noise.
Threw them away when I got there,not realising id forgotton the 2nd pair for the return trip......
Bloody hell,what a difference,its deafening with out ear plugs,my ears were ringing by the time I got home !!
THATS why ive just payed for some custom made ear plugs plus ive put some of the cheap foam ones in my jacket incase I ever lose them,im not riding anywhere without them again.
If you dont use them,try them,you'll be surprised with the difference I think.