More aggressive than the Stage 2 but still works with factory valve springs. Pulls hard up through 9500 rpm but still delivers power on demand on the low end. ECU flash or tune recommended.
|Adv Dur (.020")
|Dur @ .050
|Valve Lift (1:1)
|Valve Lift (mm)
BC & CryoHeat Polaris XP 1000 camshafts are brand new, semi-finished cam cores that allows the capability to grind unlimited lobe specifications while still maintaining the factory base circle size. Up until this point, the only camshaft options available for the Polaris XP 1000 were regrinds cut from stock cam cores, which greatly restricts the amount of lift and duration possible due to base circle limitations, or expensive hardfacing or hard welding of stock cam cores. While hardfacing does allow for unlimited spec, you're at the mercy of these "welded up lobes" holding up over time and if they don't, you've got debris in your engine. The Polaris RZR XP 1000, built by ProStar, was first introduced in the RZR chassis back in 2014 and is still a current engine platform today. The 999cc engine features dual overhead camshafts (DOHC), solid bucket type cam followers, 4 valves per cylinder, wet sump, dual 48mm throttle bodies and EFI with new long tip fuel injectors, ensuring each cylinder is supplied with the air and fuel it needs to produce unmatched power on demand. To achieve the 999cc displacement, the XP 1000 features a 93mm cylinder bore x 73.5mm stroke crankshaft in a 180 degree configuration with 11:1 compression ratio. To deliver that power to the wheels, the RZR XP 1000 has an ultra-efficient driveline featuring a retuned, high performance CVT system to distribute the 110 (stock) horsepower from the engine to the transmission with 71 ft lbs of torque. Polaris also specifically geared the transmission to optimize the power of the ProStar engine. With greater than 80 percent of peak engine torque available from 3500 to redline, the RZR XP 1000 has huge torque on tap for the most aggressive dune and desert riding.