Ultra 310 Stage 2 Engine Kit with RDP-16 Supercharger Pulley Wheel STOCK ULTRA 310X AVG. SPEED 65.5-66 mph @ 7600-7700 RPM (after speed limiter engagement). STAGE 2 PERFORMANCE KIT 77 mph @ 8100-8150 RPM The R&D Ultra 310X Stage 2 Engine Kit with RDP-16 Supercharger Pulley Wheel will significantly increase low end and mid range response, noticeably improve acceleration, and add to top speed performance (up to 77 mph when combined with a R&D Performer kit). The R&D Stage 2 Engine Kit consists of a R&D RDP-16 Supercharger Pulley Wheel, R&D 255LPH High Performance Fuel Pump Kit, R&D Stage 2 Reprogrammed ECU, and R&D Adjustable Valve Kit (pre-set to 16 pounds). The R&D Stage 2 Engine Kit will deliver more boost with increased horsepower and great reliably with the properly matched R&D ECU Tune calibrations for 91, 93-95, or 100 octane fuels. The R&D Stage 2 Engine Kit will perform excellent in all recreational riding conditions using 91 or 93-95 octane pump gasoline, and 100 octane fuel for racing use. The R&D Adjustable BOV is pre set to 16 pounds of boost. NOTE: R&D does not recommend running over 15.5 pounds of boost on pump gasoline with the RDP-16-91 octane ECU Program. R&D recommends the addition of the R&D Adjustable Valve Kit to insure proper and consistent boost pressure settings, as well as the R&D Kawasaki 310X Free Flow Kit. R&D offers an ECU Program for the RDP-16 Pulley Wheel that is calibrated specifically for the octane level of fuel of your choice. Specify your fuel octane type when ordering. Call R&D for specific information and suggestions regarding your specific fuel choice and riding conditions. Pt. # 611-31693 RDP-16 Pulley, R&D Stage 2 ecu tune, R&D 255 Fuel Pump, R&D Adjustable BOV $1299.85
