sp gear box or not

[swadger25]

Hi there I have a zxr 400l sp race bike . Question is sp gearbox or fit standard l one ???

[cargo]

SP close ratio box...............everytime

[Robbie]

I find the sp very difficult to get a decent start.
so for me on short races and short circuit stuff id say std box. unless you can launch the bloody thing.

[simon_ed]

same here i cant get a good start with my SP box but i do prefer it over standard

[alanh]

i asked the same question to my rider rep when i started out, he said the same think about not being able to get it off the line, standard box for circuit racing