Forks - yes to get the bike handling as it should and to get the best from the superb chassis that the SV has it is very beneficial to sort the suspension.
We fit Ohlins springs, Racetec emmulators and then spacers/air gap with oil to suit. Its a very simple upgrade that doesnt over complicate the fork and has won many races, championships and lap records.
If you dont have to keep the SV in minitwin spec then fitting a GSXR front end works very well for a few reasons. :
1. The GSXR front end is lighter than the stock SV front end and also stiffer which on its own compliments the chassis very well.
2. The GSXR forks take some crashing to bend!..the SV forks are very prone to bending even in a light off, same with the yokes.
3. With the GSXR front end you get the radial brakes (if you go for a radial brake model!) which work awesome on the SV.
4. You can get away with running them on the stock settings (barring a service and a change of oil if they are over 2 years old).
Shock wise the stock shock isnt upto the job. Im not an advocate of using gsxr shocks either as the damping rates etc arent even close to what the SV should be running due to linkage ratios, swingarm length etc etc.
Nitron do a very good range of shocks that work very well on the SV and obviously Ohlins also do.
Fueling wise dont waste your cash on a PC. Direct mapping to the ECU works very well on the SV650 and this is the system we have used on all our race bikes barring the full tuned motors which now run the Dynapro Interceptor fueling boxes to optimise the fueling.
Bodywork wise, Race Products and Pro Fibre do very good quality fairing sets. Barring that look out for some good second hand kits.
The SV is a stonking bike enjoy!
