Collection: engine parts

Exhaust nozzle for SE 800SX-R / 800X-2
A part to style the exhaust port.

[Compatible models]
Kawasaki Kawasaki
750/800 engine All
[SXi-Pro / 750SX etc. / 800SX-R / 800X-2]

- Machined aluminum flywheel engine cover
●The surface has a beautiful finish with anodized coating.

【please note】
*The separate oil supply model cannot use the oil pump, so it will be a mixed specification.

【Compatible Models】
YAMAHA SJ('21)

This product bypasses the resonator located between the muffler and the water box, improving exhaust efficiency.

【Compatible Models】
YAMAHA
EXR
EX

Bypasses the resonator between the muffler and the waterbox
to improve exhaust efficiency.

Applicable Models: YAMAHA
FX CRUISER SHO (2008-11)
FX SHO (2008-11)
FX HO (2009-11)
FZR (2009-2016)
FZS (2014-16)

Improved exhaust flow enhances performance.

【Compatible Models】 YAMAHA
GP1800
VXR (2015-)
VXS (2015-)

Improved exhaust flow enhances performance.

[Applicable models] YAMAHA
FZR
FZS (～2016)

Improved exhaust flow leads to improved performance.

【Compatible Models】
●YAMAHA SJ (2021 model)

●Far exceeds the normal intake efficiency.

●The power filter stably supplies cool air to the supercharged engine,
providing greatly improved acceleration and RPM.

【Applicable models】
●YAMAHA GP1800 (-2020)

●Far exceeds the normal intake efficiency.

●The power filter stably supplies cool air to the supercharged engine,
providing greatly improved acceleration and RPM.

●Replaces the restricted stock airbox with a high-precision intake duct that attaches
to the supercharger via a high-volume 4-inch adapter.

【Compatible models】 YAMAHA
FX SVHO (2014-18)
FX SHO (2012-16)

●By increasing the amount of air intake and sending a large amount of air to the engine,
low-to-mid-range acceleration improves, and top speed also increases.

●The filter is a K&N 4-inch large type.
It takes in cooler air from a position further forward than the engine itself, improving intake efficiency to the engine.
The pipe section is made of lightweight molded resin.

【Compatible Models】
●YAMAHA SHO ('08-'11)/FZR/FZS ('09-'11)

●By increasing the air intake and sending a large volume of air to the engine, acceleration at low and mid-range speeds improves, and top speed also increases.

【Compatible models】SEA-DOO
RXP-X 300 (2021 model)

Bypasses the resonator between the muffler and the water box
to improve exhaust efficiency.

【Please note】
・If marked "Made to order" or out of stock, it will take time to prepare.
・As this is an overseas order product, cancellations, returns, or exchanges are not accepted after an order has been placed.

【Compatible Models】SEA-DOO
RXP-X 300 (-2020)
RXT-X 300 (2016-17)
GTX-L 300 (2016-17)

Bypasses the resonator located between the muffler and waterbox to improve exhaust efficiency.

【Compatible models】
SEA-DOO SPARK (Compatible models listed below)

Bypasses the resonator between the muffler and the water box to increase exhaust efficiency.

【Please note】
・If marked "Order" or out of stock, it will take time to prepare.
・As this is an overseas order product, cancellations, returns, and exchanges are not accepted after an order has been placed.

Compatibility details
2025 Sea-Doo Spark (2up)
2025 Sea-Doo Spark (3up)
2025 Sea-Doo SPARK TRIXX (1up)
2025 Sea-Doo SPARK TRIXX (3up)
2024 Sea-Doo Spark (2up)
2024 Sea-Doo Spark (3up)
2024 Sea-Doo SPARK TRIXX (1up)
2024 Sea-Doo SPARK TRIXX (3up)
2023 Sea-Doo Spark (2up)
2023 Sea-Doo Spark (3up)
2023 Sea-Doo SPARK TRIXX (2up)
2023 Sea-Doo SPARK TRIXX (3up)
2022 Sea-Doo Spark (2up)
2022 Sea-Doo Spark (3up)
2022 Sea-Doo SPARK TRIXX (2up)
2022 Sea-Doo SPARK TRIXX (3up)
2021 Sea-Doo Spark (2up)
2021 Sea-Doo Spark (3up)
2021 Sea-Doo SPARK TRIXX (2up)
2021 Sea-Doo SPARK TRIXX (3up)
2020 Sea-Doo Spark (2up)
2020 Sea-Doo Spark (3up)
2020 Sea-Doo SPARK TRIXX (2up)
2020 Sea-Doo SPARK TRIXX (3up)
2019 Sea-Doo Spark (2up)
2019 Sea-Doo Spark (3up)
2019 Sea-Doo SPARK TRIXX (2up)
2019 Sea-Doo SPARK TRIXX (3up)
2018 Sea-Doo Spark (2up)
2018 Sea-Doo Spark (3up)
2018 Sea-Doo SPARK TRIXX (2up)
2018 Sea-Doo SPARK TRIXX (3up)
2017 Sea-Doo Spark (2up)
2017 Sea-Doo Spark (3up)
2017 Sea-Doo SPARK TRIXX (2up)
2016 Sea-Doo Spark (2up)
2016 Sea-Doo Spark (3up)
2015 Sea-Doo Spark (2up)
2015 Sea-Doo Spark (3up)
2014 Sea-Doo Spark (2up)
2014 Sea-Doo Spark (3up)

【Compatible Models】 SEA-DOO
RXT-X 300 (2018-2019)
GTX-LTD 300 (2018-2019)

This product bypasses the resonator located between the muffler and water box, improving exhaust efficiency.

【Compatible models】SEADOO
RXP-X 300 (2021 model)

Improve engine performance by bypassing the resonator after the water box and using a rear exhaust.

【Compatible Models】SEADOO
RXP-X 300 (-2020)

Improve engine performance by bypassing the resonator after the water box and using a rear exhaust system.

【Compatible models】SEA-DOO
RXT-X300 (2016-2017)
GTX-L300 (2016-2017)

This product improves engine performance by bypassing the resonator after the water box and adopting a rear exhaust system.

【Compatible Models】SEADOO
For SPARK 2UP only (Cannot be installed on SPARK 3UP) (Separate product for 3UP, Part No.: RS15130-C)

By bypassing the resonator after the waterbox and directing exhaust to the rear,
engine performance is improved.

The RIVA RS15120-1 Rear Exhaust Kit is a performance upgrade that improves exhaust efficiency on SEA-DOO 300/325 models.
It bypasses the resonator located behind the OEM water box and converts to a rear exhaust, improving throttle response and sound.

【RS15120-1 Compatible Models】
SEA-DOO
Explorer Pro 170 (2024-2026)
Explorer Pro 230 (2026)
FishPro Sport 170 (2026)
FishPro Trophy 170 (2026)
GTX 170 (2022-2026)
GTX 300 (2022-2026)
GTX LIMITED 300 (2018-2024)
GTX Limited 325 (2025-2026)
GTX230 (2021-2026) 
RXT-X 300 (2018-2023)
RXT-X 325 (2024-2026)
Wake 170 (2022-2025)
WAKE PRO 230(2018-2026)

By bypassing the resonator behind the water box and converting to a rear exhaust,
engine performance is improved.

【Disclaimer】
・If marked "取り寄せ" (made to order) or out of stock, it will take time to prepare.
・As this is an overseas order product, cancellations, returns, and exchanges are not accepted after an order has been placed.

【Compatible Models】SEA-DOO
RXP-X 260RS (T3/
GTR215 (GTI)

Enhances engine performance by bypassing the resonator after the water box and
directing exhaust to the rear.

【Compatible Models】SEA-DOO
RXT-X260/iS/aS
RXT-X260RS/GTX (S3 Hull ALL)

*For models with suspension function, please use with [RS15090-RSB].

Improved exhaust flow leads to enhanced performance.

【Compatible Models】
KAW/YAM/SD ALL MODELS

●Increasing the air intake and sending a large volume of air to the engine improves acceleration at low and mid-range speeds and increases top speed.

【Compatible models】SEA-DOO
RXP-X300 (2021~ models)

By increasing the air intake and sending a large amount of air to the engine,
low-to-mid speed acceleration improves and top speed increases.

Applicable models: SEA-DOO WAKE PRO 230 ('18-'19)

By increasing the amount of air intake and supplying a large amount of air to the engine,
low to mid-range acceleration improves and top speed increases.

Applicable models: SEA-DOO SPARK

Increasing the air intake and feeding a large volume of air to the engine
improves low-to-mid range acceleration and increases top speed.

【Compatible models】SEA-DOO
RXT-X300 (2018-19)
GTX-L300 (2018-19)

By increasing the air intake and supplying a large amount of air to the engine,
low to mid-range acceleration improves and top speed increases.

[Compatible models] KAWASAKI ULTRA250/LX/15F

Exhaust port only

●Made of aluminum with taper processing.
●The tail side becomes stylish.

■Size: Hull IN side 60φ

【Compatible with】KAWASAKI
ULTRA300/260/250 (2008)

※For use with genuine water boxes of ULTRA300 (2011-), ULTRA250/260 (2008-2010),
please also use "Part Number: RK16090-08-ERC Conversion Coupler."

●Improves exhaust efficiency and reduces back pressure.

●ULTRA models from '08 onwards include a large-diameter exhaust outlet.

This conversion coupler is required when installing "Part No. RK16110 RIVA Free Flow Exhaust" on a genuine water box.

【Compatible Models】
KAWASAKI NEW SX-R

●Provides a steady supply of cool air to the engine, significantly improving acceleration and RPM.

●This system draws cool air from the front of the engine compartment near the hull vents.

●Replaces the restrictive stock airbox with a high-volume, precision-molded intake tube.

●Cool air enters the system through an oversized K&N filter element.

【Compatible Models】KAWASAKI ULTRA 310/300

The extra-large filter and large 4-inch diameter pipe deliver air to the supercharger without being affected by the heat in the engine compartment, improving both acceleration and top speed.
Includes a water-repellent pre-filter.

■Filter mounting diameter: 4 inches (approx. 100mm)

Applicable models:
KAWASAKI
ULTRA 260/250

By increasing the air intake and sending a large amount of air to the engine,
low-to-mid-range acceleration is improved, and top speed is also increased.

■Resin material with excellent solvent resistance, chemical resistance, oil resistance, impact resistance, abrasion resistance, and weather resistance.
■Operating temperature range -20℃～110℃

Outer diameter 6×6×6mm
Inner diameter 4×4×4mm

■Resin material with excellent solvent resistance, chemical resistance, oil resistance, impact resistance, abrasion resistance, and weather resistance.
■Operating temperature range -20℃～110℃

Outer diameter: 6x6x6mm
Inner diameter: 4x4x4mm

■ Resin material with excellent solvent resistance, chemical resistance, oil resistance, impact resistance, abrasion resistance, and weather resistance.
■ Operating temperature range: -20℃ to 110℃

Outer diameter: 6 x 8 x 8 mm
Inner diameter: 4 x 5 x 5 mm

Motoine Racing Straight Thread 1/4: Outer diameter 1/2

Special product for big lines

1/8 (thread) outer diameter 1/4" pulse

■Size: Outer diameter 15mm, inner diameter 7mm

Takenoko elbow socket for waterline one-touch coupler

KAWASAKI
750SX
800SX-R
800X-2

●Lightweight flywheel weighing 800g.
●The response of engine revving and rotation return is improved, so acceleration from 0 to 1m is significantly improved, making it a must-have item at the start of a racing scene.
●Improved from previous products to increase durability.
●Compatible with CDI-10R/CDI-R power unit, and when installed at the same time, the pickup will be improved and the response will be linear with throttle work. The strength of the gear has also been increased.
●Compatible with battery ignition CDI, so it can be used with KAWASAKI 800SX-R (A2~)/800X-2 with genuine CDI.

【please note】
Since the stator is removed during installation, there is no charging function.

■Material: T bolt, nylon nut all made of stainless steel

[Product specifications]
■Tightening range/clamp width/quantity

JL52-635714: 63.5~71.4mm / 19.0mm / 1 piece
JL52-826905: 82.6~90.5mm / 19.0mm / 1 piece
JL52-11431222: 114.3~122.2mm / 19.0mm / 2 pieces
JL52-15241651: 152.4~165.1mm / 19.0mm / 1 piece

Definitely recommended for models with a supercharger.
Traditional hose clamps will collapse if you tighten them too much, and fall out if you don't tighten them too much...
There was such a problem, but the tightening torque can now be managed.

With heavy duty high torque clamp,
Boasts torque performance more than three times that of normal worm gear clamps.
It is mainly used in exhaust and intake areas where vibration is likely to occur.
Tighten the T-bolt with a lock nut, so you don't have to worry about it coming loose.
It also has a structure that tightens the hose evenly, so you can grip the hose firmly.

The bolts and nuts are also made of rust-resistant SUS.
The nut uses a stainless steel nylon nut that is hard to loosen.
Adopts a ROLLED-EDGE design (R processing on both ends of the band makes it difficult for the hose to get wedged).

■Material: Stainless steel

[Product specifications]
■Size/Quantity
JL51-110133: 11.0~13.3mm / 10 pieces
JL51-155185: 15.5-18.5mm / 10 pieces
JL51-194226: 19.4~22.6mm / 10 pieces
JL51-224256: 22.4~25.6mm / 10 pieces
JL51-256320: 25.6-32.0mm / 10 pieces
JL51-436500: 43.6~50.0mm / 10 pieces
JL51-700780: 70.0~78.0mm / 10 pieces

Clamp using a special tool (product number: CH-207).
The clamping capacity is much greater than that of normal tightening clamps.
Used in SEADOO superchargers and important parts that must not come loose.

■Material: Stainless steel
■Quantity: 5 pieces
■Size: 90-110mm

Compared to standard stainless steel clamps, there are no holes in the groove (zebra-like),
You can apply more tightening torque than standard clamps.

This hose has a special coating applied to its surface.

[Product specifications]
■For water (*no oil allowed)
■Size: Inner diameter/thickness/length
JL40SHL19RD: 19mm /4mm /1m
JL41SHL13RD: 13mm /4mm /1m
JL40SHL8RD: 8mm/4mm/1m

■Maximum pressure resistance for regular use 5kg/cm
■Regular heat-resistant temperature ~180℃

[Compatible models]
KAWASAKI 750(B)/800

An indispensable item for crank maintenance and racing scenes.

Made using the same material as the normal one and made it even stronger.
The balance of the crank is the best.
■Made in Japan

*With big end bearing and small end bearing sold separately.

[Compatible models]
KAWASAKI Kawasaki 750/800(A1)
800SX-R (2003) JS800A1,
750SXI (1995-97),
750SX-A1・JS750B1/B2/B3,
750SXI-PRO(1998-2002)JS750C1-5

●Also compatible with normal engines.
●Because it is a reinforced coil, it is tougher than normal, and the price is more reasonable than normal.
●Compatible with genuine product number 21003-3732.

[Product specifications] All stainless steel hose clamp

 ■Material: Stainless steel

■Size/Quantity
7~16mm / 10 pieces
10~23mm / 10 pieces
16~32mm / 10 pieces
33~57mm / 10 pieces
47~70mm / 10 pieces
59~82mm / 5 pieces
71~95mm / 5 pieces
91~114mm / 5 pieces
118~140mm / 5 pieces