Stage 4 is where your Spark stops being just a fun ski and becomes a serious performance machine. This kit is built for riders who want the lot: maximum acceleration, top-end speed, razor-sharp handling, and a more aggressive sound that turns heads on and off the water.
Whether you’re lining up for a race, chasing the fastest ski on your local stretch, or simply want to squeeze every drop of potential out of your Spark, Stage 4 delivers it all.
Stage 4 takes everything from Stages 1, 2, and 3, then adds the upgrades that unlock the Spark’s full character. A high-flow performance exhaust lets you choose your style (free flow, rear exit, or dual rear exit) giving your ski the growl and flow it deserves. The WR04026 air filter kit delivers a massive increase in airflow, letting the engine breathe harder and respond faster.
Combined with the ECU tune, impeller, handling upgrades, and pump efficiency refinements from the earlier stages, the result is explosive acceleration, relentless pull through the rev range, tighter grip in corners, and a ski that feels every bit as aggressive as it looks.
Each level adds performance and control. Pick the kit that fits your needs and budget.
Improved throttle response
Excellent hookup
A great starting point
Stronger pump reliability
Enhanced cornering
Builds upon stage 1
Huge thrust increase
Race tuned response
Builds upon stage 2
Ultimate top end speed
Aggressive sound and feel
The final stage
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Please click here to find the instructions for all items in this kit.
Overall rating: 4.9 / 5 from 1026 reviews.
Very high quality.
Feel a lot better then stock grips with the width
great deal with Works.
Cheapest and quickest mod, could actually feel the difference from this 10 min upgrade
Easy install great instructions
Sounds great!
Looks great!
Its very good and I like it
I actually bought these for my 96 XP but they didn’t work on the stock bars. They did however work on my 2000 GTX. They’re just the bar extensions I was looking for.
Top
All went well
Install was straight forward
These stickers are huge. Might be a little bit nicer to have them a little bit smaller, I had a hard time trying to fit it on the nose of my Super Jet. If it was a little bit smaller, you would be able to get it on there really nice. I bought this pump wedge for my 2021 super jet and it has made a huge change in the way it handles. By pointing the nozzle down, it presses the front of the ski into the water for a more positive riding experience. I stuck this huge kind of out of place sticker on the front of my Super Jet because I believe so much in this wedge product.!!!!!!!
I was Referred to this product by Steve F. He was 100% correct. This changes things. If you’re a heavier rider like me 250, you will really appreciate the way This wedge sends the nose of the ski into the water to make the entire ski track flatter on the water. Completely 110% satisfied with this product. My ski is a 21’ And I wish I knew about this sooner. Best 110$ I’ve spent on the ski!
My trim up is more effective with the trim extension. I can feel the slight speed improvement with all of the performance upgrades I have. Well made piece that was easy for me to add on to my trim arm. Thank you #jetskiracer2003
It's not exactly exaggerating I thought it was getting. But over all it's nice and does he trick. Unfortunately though the end of the intake abs the power filter are literally next to the handle bar just above the had tank. I was under the impression that it was to reach all the way up to the noise where the vents are ace get actual cool air. I'm working on adding to it if something to get it to the nose. But it's all with the money, great quality
The lady on the other end of the phone was helpful &I will keep her as a good contact for my parts .thanks
Clean and color looks good
Yamaha 2019+ FX, 2017+ GP1800 & 2011 VXR/VXS Insert Edition Sponsons
Sounds great!
Looks great on my spark with the Worx racing bars
The pipe works really well love it
Great add on for a GTX. Really helps with sideways chop. Rides straights like an arrow now.
My order was missing the mounting bolts. Once I found some at the hardware store it was easy to install. It looks great. I'm planning to install the Worx catch can when they return to stock at Greenhulk.
Always fits perfect
Nice stuff I like
These things are amazing bought a second set for my brothers gp after he tried them on mine.
Yamaha 2019+ FX, 2017+ GP1800 & 2011 VXR/VXS Insert Edition Sponsons
Excelente kit.!! 👍👍👍👍 En mi Yamaha trabaja al 100%
This is an amazing all around ride plate for the Yamaha superjets. You can rip into corners super hard and it holds amazing traction and it still allows your ski to track very well at high speeds. This ride plate looks sweet too I couldn’t be more happy with my purchase! I recommend this to anyone with a 2008-2020 Yamaha superjet
The fit and finish of works products set them apart from the competitors
Hands-down, the best catch can on the market The billet parts they use separate them from the rest definitely worth the money
Great addition for an arm stretching rocket on the water!
Easy install and a classy clutter free design!
Absolutely the best fit perfect 👌
A must for straight line stability or buoy carving. This will literally transform the handling of your ski. Easily adjustable for varying conditions and riding styles.
Super simple install and noticeably better!
You need these to install the 130mm ODI Grips! Worked perfect for my GP1800.
Absolutely stunning no slip at all perfect for tricks 😍
Seadoo Handlebar Extensions and Grip Combo (suits Spark, 18+ RXTX/ GTX, 21+ RXPX 300/325)
Looks amazing and a lot more useful then the stock washes that end up crumbling from sun damage
Awesome grip
It was delivered very quickly, it is exactly what I wanted
