If you find that your wrists aren't as flexible as you'd like then the standard
1/4 turn throttle might be a bit of a pain when going from closed to full open throttle; or maybe you just want quicker
throttle response. Either way, there is a conversion you can do to make the stock 1/4 turn throttle a 1/5 turn throttle.
A 1/5 throttle adapter for a SV650 can be obtained from www.brgracing.com. It does not directly fit the GS throttle body. You can get a SV throttle tube (from the local Suzuki shop, or various
other sources) and, installed with the 1/5 adapter, fits the GS perfectly. All you have to do is readjust the throttle
It's an expensive conversion, though, $30 for the SV throttle tube and ~$30 (delivered)
for BRG's 1/5 turn adapter.
It's nice if you like/need a quicker throttle.