i want good power gain enough to pull a wheelie in 4th gear without much effort. Please give me some ideas on wich slip-on to buy or will i need a complete system to really bring the performance of the bike up a notch. I want to add a slip-on or complete system soon so thanks for your input.

 

Everything stock you should beable to pull a wheelie easily in 3rd gear. Put a 12t front sprocket and 4th wont be a problem