well i went and bought my first sport quad. a 2002 honda TRX400EX quad for 600 bucks. it needs a new bearing carrier, tail light, battery box,battery, airbox lid, muffler, chain and 1 more set of brake pads. this is it i just got it home.
my questions are,
1. on the rear end of all the 400ex's on the left hand side i see a cyclinder type deal on the sub frame what is that since mine doesnt have it?
2. when i put an after market exhaust on here do i need to rejet? since all these pipes ive been looking at so no need to rejet blah blah blah
3. on the airbox theres a 2nd tube runni