Here's mine,
05 model with ABS. I moved up to the GS from a Kawasaki Z1000 and CBR600RR. The stock GS was excellent but all it needed was a bit of a sweeter sound so I put a Remus Evolution Carbon end can. It gave the GS a bit of a better sound and shed a bit of weight off the rear!.....
Mods (not much)
- Remus Evolution
- BMW crash bars(if that's considered a mod)
- Tobinators
Other than that, The GS doesn't need much improvement!
Cheers