Everything you need to turn your stock RZR 900 XP into a dirt eating monster! This kit comes with everything to take your 875cc stock machine to the next level of performance. We start off by boring and plating your cylinders to 96mm making your machine 935cc's. Then add our extremely high quality German made forged Woessner pistons. Next we do our professional cylinder head porting to help all those extra CC's breathe. In addition to porting, we help this motor flow with our custom cut high performance cams. Don't forget the exhaust! We set you up with either our Double Barrel or Hot Rod style slip-on exhausts to let all that extra air out. With all those mods your going to need more fuel! No worries this kit comes with the best fuel controller on the marker; Power Commander 5. Loaded with our custom dyno tuned map. One thing we can't forget is making sure this power gets transformed into 100% driven roost in the competitions face. This means we add our high performance, adjustable Stage 2 Clutch Kit to finish up this 115-120hp Kit!