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KAWASAKI
4 STROKE
INATKE
SYSTEMS
ENGINE/
GASKETS
EXHAUST DRIVE LINE
HANDLING
ELECTRICAL WATERLINE
/BILGE
STEERING
& CONTROLS
BODY
ACCESSORIES
SERVICE TOOLS
/HARDWARE
CHEMICAL
ULTRA 250X/260X • CONTROL SYSTEMS & HANDLING
R&D ULTRA
250X/LX/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 per-
formance 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.
Description
Part No.
R&D Ultra 250X/LX/260 Aquavein Scoop Grate
111-25000
RIVA RACING ULTRA
250X/LX/260 TOP-
LOADER INTAKE GRATE
Our top-loader intake grate features
a unique tapered wing design that elim-
inates prop spin and cavitation while
delivering enhanced acceleration and top-speed. Deep side rails improve sta-
bility and handling. Durable black race coating protects from corrosion. Race
Legal.
Fits all Ultra Models.
Description
Part No.
RIVA Racing Top-Loader Intake Grate
RK22090
R&D ULTRA
250X/LX/260
ALUMINUM
PERFORMANCE
OFFSHORE RIDE PLATE
The R&D Kawasaki Ultra 250X Ride Plate has been fashioned after our GP-
1200R & Kawasaki 15-F plate designs with a few new tricks. The Ultra 250X
ride plate is extended 30mm and re-angled over stock to reduce porposing
while the new R&D stepper concept will add top speed. R&D’s Ride Plate con-
cepts 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! The new Ultra 250X ride plate from R&D is “The
Perfect Ride plate” with a great balance of speed and handling with no com-
promises.
Description
Part No.
R&D Ultra 250X/LX/260 Cast Alum. Ride Plate
121-25000
RIVA RACING
ULTRA 250X/LX
PERFORMANCE
RIDE PLATE
The new Riva Racing Ultra 250X/LX
Performance Ride Plate design allows craft to plane faster increasing accelera-
tion & top-speed as well as improving handling in all types of water conditions.
Description
Part No.
RIVA Racing Ultra 250X/LX Performance Ride Plate
RK21090
R&D ULTRA 250X/LX/260
PUMP SHOE SEAL KIT
The R&D Pump Shoe Seal kit for the Ultra
250 is now available. The three piece Seal
Kit stuffs up the unwanted cavities in the
pump shoe and the oem intake grate that
aid in producing cavitation. This kit allows
you to seal up the area between the
intake grate and pump shoe, which will reduce cavitation and increase pump
efficiency and performance.
Description
Part No.
R&D Ultra 250X/LX/260 Pump Shoe Seal Kit
161-25000
R&D ULTRA 250X/LX/260
1 DEGREE NOZZLE WEDGE KIT
The R&D 1 Degree Reduction Nozzle Wedge Kit for
the Ultra 250X/LX will add quicker acceleration and
top speed performance as well as allow the bow to
ride slightly higher which will significantly reduce
annoying bow spray promoting a much dryer ride.
Extensive testing has led our development team to wedge the reduction noz-
zle up 1 full degree which will inexpensively give better handling everywhere
and provide a boost of up to 1 mph in top speed performance. The billet alu-
minum CNC machined 1 degree reduction nozzle wedge kit was specifically
designed to work without compromising or removing the O.E.M. reverse gate.
The R&D Pump Wedge Kit comes complete with all the necessary hardware
and instructions for easy installation.
Description
Part No.
R&D 250X/LX/260 One Degree Nozzle Wedge Kit
141-25001
R&D ULTRA 250X/LX/260
DRIVESHAFT SHIM KIT
The R&D driveshaft shims install into the prop
snout and removes the unwanted play or float the
driveshaft has in the prop/pump assembly.
Properly shimming the driveshaft will keep the
driveshaft couplers fully engaged eliminating pre-
mature rubber dampener wear and failure.
Description
Part No.
R&D Ultra 250X/LX/260 Driveshaft Shim Kit
161-00810
R&D ULTRA 250X/LX/260
ANTI-CAVITATION
PUMP CONE KIT
The R&D Anti-Cavitation Pump Cone Kit was
developed to reduce overall internal pump
cavitation within the Ultra 250’s offset
reduction/compression nozzle design. The
O.E.M. Reduction/Compression nozzle is
offset 5 degrees, while the pump cone/bearing cap remains straight which
causes uneven pressures within the pump and reduction nozzle. The R&D
Anti-Cavitation Pump Cone is offset 5 degrees and reshaped to match
the O.E.M. reduction nozzle offset promoting even pressures, which will
substantially reduce cavitation, increase pump hook up, boost acceleration,
and increase top speed performance.
Description
Part No.
R&D Ultra 250X/LX/260
161-25010
Anti-Cavitation Pump Cone Kit