This kit includes the minimum parts you need to make some serious power! No matter if you ride trails, mud, or dunes, we know your RZR S 1000 needs more power. Our custom Bully Dog tuning features a locked throttle by wire along with a raised rev limiter, raised speed limiter, optimized timing curve, and optimized fuel curve. Locking the TBW is a huge deal as the stock program limits your throttle position at various times as a sort of traction control. With our base program, you gain big acceleration, hold max RPM better, can rev higher, and go faster. The RZR S 1000 timing curve is weak from the factory which is one big reason for it being down on power compared to the XP 1000. We wake up this single throttle body monster and unleash the full potential. Peak numbers are not huge with this tune, but the low and mid range gains are simply unreal! Our Stage 1 clutch kit includes our Goldstar magnetic adjustable primary weights and a custom BMP primary spring. These simple clutch changes allow the motor to rev where the real power is.