el presidente
Member
- Dec 21, 2000
- 499
- 0
i have been told before i have my thumper racing big bore kit to bump my bike out to a 435cc machine that i need to open up my air box. does anyone have any ideas on how i should go about doing this i would appreciate it, or should i just go ahead and by a less restrictive air box? if i need to do that i don't want to spend almost as much for an air box as i am for beefing up my engine. thanks for the info