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R&D Ultra 250 |  260 Stage 1 Kit
R&D Ultra 250 | 260 Stage 1 Kit
8100-8150 RPM  72-73 MPH
 
The R&D 2007-2008 Kawasaki Ultra 250X Stage 1 Kit was developed with the hardcore recreational rider and offshore endurance competitors in mind looking to significantly improve overall handling, reduce pump cavitation, add greater acceleration, and increase top speed performance with bolt on performance parts. No engine modifications necessary! The entire Stage 1 Kit installs quickly and very easily with basic instructions and hand tools. Each component part in the STAGE 1 Kit can be used as a stand alone product delivering the performance gains individually charted above with the exception of the engine kit. The R&D Stage 1 Engine Kit has been group matched and pre-tuned for proper air to fuel ratios with high performance fuel injectors, fuel pressure regulator, fuel return lines, and the R&D Powershot Fuel Tuner to deliver the most reliable and tunable bolt on 4 stroke engine package ever produced for a watercraft! The entire R&D Stage 1 Kit will add a noticeable 5-7 mph increase in top speed performance with superb handling benefits. The R&D Stage 1 Kit will transform a great boat into “The Perfect Recreational Racer”. The R&D Stage1 Kit parts have been offshore endurance and closed course race tested and have chocked up some impressive results in the 2007 season as well as world championships in the stock 4-stroke runabout class at the world finals with the R&D Performer Kit.

Our Price: $3,616.00
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Ultra 250X Engine Performance Kit
Ultra 250X Engine Performance Kit

Our Price: $1,825.95
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Kawasaki Ultra250 Crankcase Ventilation
Ultra 250 Crankcase Ventilation/Oil and Vapor Separator Kit
The R&D Ultra 250 Crankcase ventilation system was developed to offer a complete bolt on breather expansion kit which will substantially reduce crankcase pressures on Kawasaki Ultra 250s supercharged engines. High performance engines (especially supercharged) need as much crankcase ventilation as possible. The R&D system doubles the volume of the O.E.M. crankcase breather and triple baffles the oil and vapor pressures within the O.E.M. breather case. The R&D system relieves excess crankcase pressures in the oil breather case and vents high pressures and fuel vapors into a piggyback vapor/oil catch can reservoir. The R&D vapor/oil reservoir mounts and connects directly to the O.E.M. oil separator tank with a quick and easy bolt on installation. The R&D crankcase ventilation and vapor separator system puts an end to oil blow by messes in the engine compartment by relieving excess crankcase pressures and trapping excess fuel vapors, condensation and blow by oil into the R&D oil/vapor separator.

Our Price: $419.95
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R&D ULTRA 250 PRO SERIES SPONSON KIT
R&D ULTRA 250 PRO SERIES SPONSON KIT
The new R&D Kawasaki Ultra 250 Pro Series Sponson Kit was designed and developed with all new generation performance concepts in mind to deliver a whole new level of handling and speed performance with offshore and closed course race proven adjustability options. The R&D Pro Series Sponson Kits have been extensively offshore, race track, and 1 and 2 up recreational tested to guarantee a comfortable setting for any riding style or condition! The R&D Ultra 250 Sponson Kit will deliver higher top speed performance and a much smoother and more predictable ride over O.E.M. sponsons. Low speed and high-speed turns are a breeze with new found control. The secret to R&D’s new generation concept is in the backing plate design with an aftermarket first, low pressure, low friction concept that breaks up and relieves speed robbing drag within the sponson’s backing plate channel. The new R&D design staggers the sponson blades fins water trapping area to pick up less water in the front and more in the back. The stagger/step-up concept greatly reduces chine walk in high speed corners, while allowing more rear end grip. There is also a higher end recreational/race setting with enough grip for the best of pro’s! Finally there is an aftermarket sponson kit that really does it all! More top speed due to less drag, less chine walking, racer preferred rear end grip, and unmatched straight line stability.

Our Price: $356.95
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R&D Ultra 250 / 260 High Performance Ride Plate (cast aluminum)
R&D Ultra 250 / 260 High Performance Ride Plate (cast aluminum)
The R&D Kawasaki Ultra 250X Ride Plate has been fashioned after our dominant and championship winning GP-1200R and Kawasaki 15-F ride plate designs with a few new tricks added. The Ultra 250 ride plate is extended 30mm and re-angled over stock to reduce porpoising while the new R&D stepper concept will add top speed. R&D’s Ride Plate concepts are the only aftermarket designs to dominate in Offshore, National, and World Championships, and to be used and endorsed by Factory Yamaha and Kawasaki racing teams for nearly a decade! The new Ultra 250X ride plate from R&D is “The Perfect Ride plate” with a great balance of speed and handling with no compromises!

Our Price: $269.95
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R&D Ultra 250 Intake Grate
R&D Ultra 250 / 260 Aquavein Scoop Grate
The new R&D Kawasaki Ultra 250 Aquavein Intake Grate Kit has been designed and developed with all new performance concepts in mind to deliver the ultimate handling and speed performance in recreational, offshore, and closed course race conditions. The new R&D Ultra 250 Aquavein has been extensively offshore, race track, and 1 and 2 up recreational tested to guarantee reduced cavitation and maximum pump hook up in any condition. The R&D Ultra 250 Aquavein will deliver quicker acceleration, higher top speed performance and a much smoother and more predictable ride over the O.E.M. intake grate in rough water conditions. Low speed and high-speed turns are a breeze with new found control. The secret to the R&D Aquavein’s performance is in its patented, award winning, and championship winning wing and twin bar, deep channel design. The well proven R&D top loader Aquavein wing concept has been used exclusively by Factory Kawasaki and Yamaha racing teams to win every Pro 1200 and Open World Championship for a full decade! Bolt on an R&D Aquavein top loader intake grate and experience why R&D is the top selling intake system worldwide.

Our Price: $249.95
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INTERCOOLER COOLING KIT
ULTRA 250X Intercooler Cooling Kit
The R&D Ultra 250 Intercooler Temperature Control system was developed to offer an inexpensive complete bolt on kit that will allow the full performance and cooling potential the O.E.M. intercooler has to offer for recreational applications. Intercooler core water temperatures have a range of affect on the supercharged air temperatures that enter into the engine. The Kawasaki Ultra 250 Intercooler operates on a dual line entrance mixture of lake temperature water and hot (140 degree) engine water that enters from the exhaust manifold to the top of the intercooler. R&D has found that bypassing the hot engine cooling water directly outward, and adding an additional intercooler cooling line, there can be a substantial and noticeable increase in low end and midrange power along with reduced detonation. The R&D Intercooler Temperature Control Kit also includes an industry first intercooler pressure relief blowoff valve to keep internal water pressures down to safe O.E.M. pressure ranges. R&D offers a range of machined flow control fittings to allow water volume control tuning for intercooler temperature adjustments for warm lake water and extreme hot air conditions. R&D offers an additional pressure relief blowoff valve kit for high water volume flow rates on higher boost Performer and Stage 1 engine kits. The R&D Kit will allow temperature tuning that will deliver surprising results. Why upgrade to aftermarket intercooler kits when there is more performance and power potential hidden in the stock intercooler system?

Our Price: $209.95
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R&D Ultra 250 Cool Air Intake Kit
R&D Ultra 250 Cool Air Intake Kit
The R&D high performance Air Filter Kit will improve acceleration and top speed performance by increasing air flow and reducing air temperatures that enter directly into the Ultra 250’s air plenum box area. The O.E.M. air plenum box on the Ultra 250 is a great design that will flow plenty of air. However, the air that feeds the plenum box is heated by the engine. R&D has created an easy to install “flat filter” that installs directly in place of the large center access inspection cover located directly under the main glove box. The R&D Flat Air Filter insert will allow unrestricted fresh and cool air to enter the air plenum box area which will add power you can feel and a nice high performance tone. The R&D Performance Filter Kit also features two filters, one for each of the surge and blowoff protection valves. The O.E.M. surge valve recycles compressed hot air back into the air box plenum at idle and under deceleration conditions. The R&D surge and blowoff valve filter kit removes the air recycling hoses which will keep the hot air from entering the air plenum box reducing the engines intake air temperatures. The R&D Ultra 250 Air Filter Kit offers great performance tips on how to remove the restrictive air vent hoses which will further reduce the under seat ambient air temperatures. The R&D Filter system does not remove or alter the O.E.M. plenum box in any way, therefore there are no questions to be answered regarding water ingestion! The R&D Filter Kit is easy to install with no modifications required to the O.E.M. parts.

Our Price: $122.80
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Ultra 250 1 Degree Nozzle Wedge Kit
Ultra 250 1 Degree Nozzle Wedge Kit

Our Price: $99.95
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ULTRA 250 ANTI-CAVITATION CONE
ULTRA 250 ANTI-CAVITATION CONE

Our Price: $91.87
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