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Choose Your Model

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Item
Part #
Description
Cost
STX15LV1

STX-15F "Level 1"

Our 15F "Level 1" kit is perfect for the guy who is looking for a little bit more out of his already great running Kawasaki 4-Stoke. Our kit includes a Cold air kit, Solas Impeller, Rideplate, Free flow exhaust kit and Sponsons.

$999
STXCAK 
STX-15F Cold Air Kit
$178
RVPPFK 
RIVA STX-F Performance Power Filter Kit
$129
PROSAI

RIVA STX-15F SC Pro-Series Power Filter Kit

Optional upgrade for Supercharger Kit air intake. Larger intake directs more cool air directly into supercharger improving performance. Includes pre-filter element. Requires use of RIVA Race Seat.
 

 

$295
RVFFEK 
RIVA STX-F Free Flow Exhaust Kit
$189
RVBET
RIVA STX-F Billet Rear Exhaust Tip
$40
RVOSKT

RIVA STX-15F Endurance Engine Kit

The Endurance Engine Kit for the Kawasaki STX-15F contains the same components and specifications that Team Kawasaki developed to dominate the international racing circuit. This modification produces excellent acceleration and a top speed of over 70 mph using VP MS109 race fuel (Jet X).

$2,095
VORSS

RIVA STX-15F Supercharger System (Race Gas)

The race bred Supercharger System for the Kawasaki STX-15F includes all necessary engine components to produce the ultimate 80 mph closed course race craft. Kit contains the same specifications that Team Kawasaki won back-to-back Pro Runabout World Titles with. System produces over 300hp using VP MS109 race fuel (Jet X).

Forged racing pistons and base gasket spacer are installed to provide maximum reliability for supercharged application. A Vortech R-5 centrifugal supercharger is mounted to the rear of motor using supplied brackets. Supercharger is driven by a heavy duty belt via a driveline coupler pulley. Pressurized air from supercharger is cooled by a water-cooled intercooler prior to introduction into original throttle body. Boost pressure of 13lbs produces a power gain of approximately 100% over stock motor. Fuel delivery, engine timing and rev limit are optimized to match the increased demands of the modified engine via a race programmed Mitsubishi ECU that plugs directly into factory wiring harness. Fuel delivery is increased through installation of larger injectors, auxiliary fuel pump and auxiliary fuel pressure regulator.

$ 7,995
SSS15RE
Skiworx Super Stock 15 Race Engine
SOL13/19
STX-15F Solas Concord 13/19 Impeller
$282
BH15F

STX Beach House Sponsons

Super aggressive turning, No speed loss in most positions, Helps straight line tracking, Machined of durable high denisty materials, Stainless hardware included.

$170
RVSPON
RIVA STX-F Pro-Series Sponson Kit
$299
RDPT2

R&D STX Pro2 Ride Plate

The R&D Pro series is best suited for high horsepower applications. The R&D Pro series is best suited for high horsepower applications. Such as Off shore kits or Supercharger kits.

$258
RDINTK2

R&D STX Pro2 Aquavein

The R&D Pro series is best suited for high horsepower applications.

$154
RDC
R&D STX Pro2 Combo
$400
SKMAG6

Kawasaki Skat-Trak Magnum Pumps 160

Skat-Trak Magnum Pumps provide greatly improved performance due to a superior vein design and larger than stock hub. Major improvements in acceleration, mid-range and top speed, along with awesome hook-up are achieved with the Magnum Pump's increased efficiency.

Mag pump, 160mm/8-V, STX, with wear ring & Impeller (9/17)

$945
SKMAG5

Kawasaki Skat-Trak Magnum Pumps 155

Skat-Trak Magnum Pumps provide greatly improved performance due to a superior vein design and larger than stock hub. Major improvements in acceleration, mid-range and top speed, along with awesome hook-up are achieved with the Magnum Pump's increased efficiency.

Mag pump, 155mm/8-V, STX, with wear ring & Impeller (9/17)

$945
SKNKT

15F Nozzle Kit

Combination reduction and steering nozzles feature interchangeable venturi rings that allow fine tuning to match modified engines with pump. Optional manual trim can be utilized with the addition of trim lever and cable (sold separately) to improve hole shot. Nozzles are powder coated and venturi rings anodized to prevent corrosion.

$542
SKRDN

15F Auto-Trim Nozzle Kit

Combination reduction and steering nozzles feature interchangeable venturi rings that allow fine tuning to match modified engines with pump. Auto-trim feature improves turning and reduces rider fatigue by automatically dropping steering nozzle when bars are turned. Optional manual trim can be utilized with the addition of trim lever and cable (sold separately) to improve hole shot. Nozzles are powder coated and venturi rings anodized to prevent corrosion.

$577
BTL
Billet Trim Lever
$68
SKTC
Skat-Trak Trim Cable
$75
RAILMK
RIVA STX Rail Molding Kit
$194
RVMBO

Riva STX-15F Mirror Block-Off

Lightweight aluminum block-off plates fill openings left when mirrros are removed. Includes Reverse lever block off.

$59
UMISTX
UMI STX Steering System
$504
HB

UMI Aluminum Handlebars

(Black or Polished Only)

$62
BFT

UMI Throttle Trigger

(Black or Polished Only)

$62
SKSC
Skat-Trak Steering Cable
$175
STXLWH

STX-F Race Hood

This is the same hood run on the Factory RIVA Race Craft. Saves 10 lbs by replacing heavy OEM hood while increasing airflow to the engine compartment through integrated duct. Sturdy one-piece design mounts easily with provided quick release fasteners. Hoods are finished in white gel coat Glove box block-off plate and front storage compartment water baffle included. Available unpainted only. Total weight 4.5 lbs..

$850
STXLS

STX Race Seat

Designed to improve air flow into the engine compartment of modified Kawasaki STX-15F and STX-1200R models. Rear of seat incorporates special ducting for Supercharged 15F craft utilizing RIVA 15F-SC Pro-Series Power Filter Kit. Rider control is enhanced through a narrower and taller design and high traction seat cover. Utilizes stock seat latch componentry. Available unpainted only. IJSBA Limited & Superstock Legal.

1,195

STX-15F

We carry many parts for the STX-15F, if you don't see what you need Please contact us.

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