We can't sound like real racebikes but with a Quick Shifter it will definitly feel like one
I have a GP Shift Quick shifter for 2003/04 R6,
Regular Shift Quick shifter for 2006/07 GSXR 750.
They might work on other models, just look em up on the Dynojet website.
You need to have a Power Commander in place for these to work.