like RR said a jet kit is a peace or cake. now for the clutch kit, its a little harder to install but can be done by your self. i did mine and it was farley easy but im a mechanic type person. the clutch kit delays by 500 rpm's. this alows whe 4wheeler to have a "harder punch" when you give it the throtle. now dont get confused the clutch kit does not give you more power it just delays 500 rpm's. if you would ever want to do this by your self i can PM you how i did it and try to explain how to do it.
03 400ex- renthal handlebars,Oury grips, LSR brake block, LSR bearing carrier, DG full skids, DG bumper, DG grab bar, white brothers exhaust, dynojet kit, K&N filter, SKIN graphics, SKIN gripper seat 15/45 sprockets, razr2 tires
06 brute force 650i---FOR SALE--- PM me if interested
CRACKIN' FRAMES & TALKIN' NAMES