Long brake lever travel.

I recently installed a gsxr front end on my 04sv650s and everything feels great apart from one thing. I need to pull the lever half way to touching the grip intil it starts working after that it feels very strong but I was wondering if that is normal.

my calipers are gsxr 1000 04 gold tocikos
lines are gsxr 1000 04 stock
rotors are galfer wave
m/c is gsxr1000 06 nissin radial

Check the lever that is fitted is the correct one for the master cylinder and if possible is an OEM item as some pattern levers dont have the correct length of pin that pushes against the master cylinder, therefore giving the wrong amount of travel.

Braided lines would help, how old are the stock lines?.

Bleeding the brakes and master cylinder, that master cylinder has a bleed nipple on it to do that.

If you have brought the master cylinder second hand it could be worn, you can buy overhaul kits from Suzuki but generally the bore wears on them slightly.