This is My Rockstar Enegy 2003 Polaris Predator with a 1986 CR500 engine. Custom built chassis by H&C Racing, Rath Racing steering stem, Renthal Fat Bars, JB Racing bar clamp, Ishock long travel +2 A-arms and tie rods, custom built remote reservoir front long travel Fox shocks by H&C Racing, Radiator shrouds by H&C Racing, Alba billet gas cap and chain rollers, 520 O-ring gold chain, custom ... RZR 1000 Replacement Muffler – Top $ 249.95 Valve Shim Kit $ 99.95 500cc Big Bore Kit, Honda 2006-Current TRX 450 $ 1,099.95 Sparks Racing Intake Restrictor, Polaris RS1/ RZR 1000 XP Dec 05, 2013 · It is a 2012 Honda CRF250X chassis (originally 4 stroke) that has been cut and modified to accept the dis-continued and infamous CR500 2-stroke engine. Service Honda, an extension of Honda PowerSports offers this conversion with a $12-15k price tag. Unwilling and unable too put up that kind of cash, I built one myself using a variety of my miller products. The project ended up costing me 1/3 ...