Factory 4.1 End Caps

Description:

Our BMS Racing Waterbox delivers increased horsepower and performance by reducing exhaust restriction and back pressure. This Waterbox will increase the low-end power and mid-range pull on your Yamaha 1.8L watercraft. High-strength aluminum construction will survive backfires and meltdowns. Powder coated to prevent corrosion. This is must for and modified 1.8L engine.

Features:

• Increased horsepower on modified 1.8L watercraft!
• Domed end caps
• Ribbed tube flanges for reliable coupler retention.
• Powder coasted top prevent corrosion
• Increase in HP on modified engines with significant torque gains as well

FITS:

All Yamaha 1.8L SVHO, SHO, and HO model skis. 

🔥 The Ultimate Exhaust Upgrade for Your RXP-X

Ready to give your RXP-X the sound it deserves?
The Worx Rear Exhaust Kit for 2021+ Sea-Doo RXP-X is here to level up your ski’s tone and attitude.

Engineered for performance and built to last, this kit delivers a deep, aggressive exhaust note with a slight bump in performance to match.

✅ Billet Anodised Aluminium Outlet – Built tough, looks clean, and features our signature Worx logo
✅ High-Thread Silicone Hose – Designed to absorb drone and vibration for a smoother, deeper sound
✅ Sleek Rear-End Finish – Subtle yet unmistakably performance-driven
✅ Complete Bolt-On Kit – Everything you need to get your ski sounding grunty, smooth, and ready to turn heads

Whether you're carving buoys or cruising the bay, this is the exhaust your RXP-X was born to run.

Heads up! All aftermarket exhausts (yep, even ours) are significantly louder than stock. 

If you’re keen to turn heads and sound like a total weapon, this is the upgrade for you.

If your idea of fun is peace, quiet, and hearing your own thoughts... stock’s calling. Probably with a cup of chamomile.

Fitment

• 2018-2020 Sea-Doo
• 2018-2020 Sea-Doo GTR 230, RXTX

Take your Sea-Doo to the next level with aggressive sound and performance.

? 2.5" Billet Exhaust Outlet – Precision-machined and anodised for durability and style
? Moulded Silicone Hose – Designed to eliminate resonance for a deep, throaty exhaust note
? OEM Block-Off Plug Included – Comes complete with standard outlet block-off
? Deletes Restrictive Baffles – Frees up your exhaust flow for improved performance
? Built for Power – Perfect for both recreational riders and racers alike
? Fitment – Suits Sea-Doo RXPX 300 and GTR 230 (2017+)

?? Note: For all other Sea-Doo 4Tec models (non-300), we recommend the WR04013 Exhaust Kit instead.

Disclaimer: Aftermarket exhausts (yep, including ours) are… wait for it… LOUD. If you like to make an entrance and be heard before you’re seen, you’re in the right place.

If your idea of fun is scenic detours and deep chats about fuel economy… stock’s probably more your speed ??

Instructions

Download Instructions

Meet the first ever Dual Rear Exhaust Kit for the Sea-Doo Spark. Built for riders who want performance, style, and a soundtrack that turns heads.

Our high-performance silicone hose, gives you unbeatable durability, heat resistance, and a perfect fit, without the extra drone that can accompany Aluminium piped exhausts. This setup removes the restrictive OEM sound box, unlocking sharper throttle response, better flow, and pure riding satisfaction.

And the sound? Let’s just say it is louder than your nana’s snoring, so if you are not into making noise, this is not for you. But if you want your Spark to growl like it means business, you have just found your upgrade.

Features and Benefits:

• First ever dual rear exhaust designed specifically for the Sea-Doo Spark

• High-performance silicone couplers for flexibility, heat resistance, and long-lasting durability

• Removes OEM sound box to reduce back pressure and improve throttle response

• Deep, aggressive exhaust note that commands attention on the water

• Precision fitment with all hardware included for easy installation

• Stylish dual outlet design to give your Spark a race-ready look

Easy to install. Built to last. Guaranteed to make waves.

Warning: May cause excessive grinning and neighbour complaints.

Want your Spark to sound as good as it rides? Ditch the restrictive stock baffle and let your engine breathe with the Worx Racing Performance Exhaust Kit. More power, better throttle response, and a deep, throaty exhaust note that turns heads. Plus, that billet anodized rear exhaust outlet gives your ski a serious performance look, because fast should look fast.

NOW WITH RED INTERIOR! Improved durability and performance, because we know you like to push limits.

? More Power, More Noise – Improved exhaust flow for better throttle response across the rev range.
? Lightweight & Durable – Moulded silicone hose with new red interior for extra strength and longevity.
? Performance Look – Billet anodized rear exhaust outlet screams race-ready.
? Easy Install – Comes with all the hardware you need, no headaches, just horsepower.
? Fits 2-Seater Sparks – (DOES NOT FIT 3-SEATER MODELS. For that, check out the WR04008).

Bolt it on. Open it up. Ride harder.

Heads up! All aftermarket exhausts (yep, even ours) are significantly louder than stock. 

If you’re keen to turn heads and sound like a total weapon, this is the upgrade for you.

If your idea of fun is peace, quiet, and hearing your own thoughts... stock’s calling. Probably with a cup of chamomile.

Instructions

Download Instructions

Fitment

• 2014-2020 Sea-Doo
• 2014-2020 Sea-Doo Spark