[quote:9iyqn379]I have to say that there are 3 things that turn me off with IRS on a sport quad. First, you have twice as many a-arm bushings to grease, and replace when worn out. On utility quads it's not as bad because they're genarally not beat around as much, but as much as a sport quad can take a beating those bushings probably wouldn't last too long. The 2nd thing is widening the quad, you also have 2 sets of a-arms to replace to widen it, which I guess isn't that big of a deal because axles aren't too cheap either, but you also would have to get longer shafts to get the power to the rear wheels. If you haven't seen the prices on the CV shafts for quads lately, check it out, prices for even a stock replacement are insane. The 3rd reason - with a shaft drive you can't readily change your gearing ratio like you can with a chain drive, where you just swap sprockets. The only way with shaft drive would be to change the rear gears similar to changing the gearing on a car, which is not only inconvenient, but also expensive if an aftermarket company would even come out with different rear gears. I'll stick to my straight axle and chain drive, more tunability and less stuff to go wrong.
