1. Loose 20kg's
2. Start with making sure carbie & filter upgraded as required.
3. Then i'd go the IRC & Sling
4. Sprokets? They can be changed to modify top end or botom end.
Remember smaller at front is faster off the mark
Bigger at the back is also faster off the mark.
Larger at the front makes your takeoff slower but improves your topend.
Smaller at the back makes your takeoff slower but improves your topend as well.
Finding the right combo depends on what you want.
My pitboss runs 17t front & 39 rear at the moment 12/14" tyres
My DC bike runs 16t front & 37 rear. 10/12" tryes
I'd say pitboss would do close on 90-100km/hr, DC lucky to do 60-70km/hr but DC eats Pitboss on tight tracks due to the pickup.