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SeaDoo Exhaust
GT40Marine Waterbox Exhaust for GT40Marine
GT40Marine 325 Shorty Water Box Exhaust is an exhaust-side upgrade for the listed application. It is built for riders who want a cleaner exhaust path, a sharper sound, and fitment support before checkout.
4.4 · 29 reviewsIn stock
$550.00
In stock - ships in 1-2 business days
1
Performance upgrade
GT40Marine Waterbox Exhaust for GT40Marine. +8-12 HP listed performance benefit. Confirm exact year, model, hull/platform, and setup before ordering.
+8-12 HP listed performance benefit
Improves exhaust sound and flow
Pairs well with intake, tune, and stage upgrades
Fits:Sea-Doo 325 Shorty Water Box - verify exact hull +8-12 HP
SKU
Verify
Install
Intermediate
Hull
Verify hull/platform
Engine
325 HP
Performance exhaust water box for Sea-Doo 2024+ 325 models. Improved flow and power delivery.
Returns & warranty
30-day returns on unused items. GT40 ECU warranty options are available; confirm fitment before installing electrical parts.
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Fitment first
Performance tested
Ships worldwide
GT40Marine 325 Shorty Water Box Exhaust changes the exhaust side of the build, where routing, outlet location, hull platform, and hardware matter just as much as engine horsepower. Match this part by year, model, hull family, and exhaust family before ordering; RXP-X/T3-R, ST3, SPARK, and Switch applications should never be treated as interchangeable.
Best for: Sea-Doo 325 Shorty Water Box - verify exact hull owners who want sound, flow, and a bolt-on upgrade that fits the rest of a performance build.
Product data
Specs, fitment, and install notes
Brand
GT40Marine
SKU
Verify SKU
MPN
Verify MPN
Fits years
Verify year range
Install difficulty
Intermediate
Fits models
Verify fitment before ordering
Engine / HP
325 HP
Hull type
Verify hull/platform
Platform
Verify application
Confirmed fitment
Public confirmed fitment is not shown for this listing yet. That protects customers from bad cross-hull or engine-only matching. Use the fitment request CTA before ordering.
What's included
- Exhaust component shown in product photos
- Model-specific routing or outlet piece when included by SKU
Required add-ons / checks
- New clamps, sealant, or exhaust hardware as needed
Performance benefits
- +8-12 HP listed performance benefit
- Improves exhaust sound and flow
- Pairs well with intake, tune, and stage upgrades
Install notes
- Confirm year, model, hull/platform, and current modifications before installing.
- Strict machine fitment: request build review if your trim or setup is not listed.
- Check exhaust routing, outlet location, and any siphon-break requirements before ordering.
Compatibility warnings
- Fitment table hidden until GT40Marine confirms exact application.
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CUSTOMER REVIEWS
4.7 out of 5 · 3 reviews
Derek M.
Verified2 weeks ago
Exactly what I needed
Fit was perfect on my RXP-X 325. Installation took about an hour with the included instructions. Noticeable performance gain — highly recommend!
Carlos R.
Verified1 month ago
Quality is top notch
Premium build quality. Shipped fast and packaging was excellent. GT40 support answered my questions before the sale.
Tyler K.
Verified2 months ago
Solid upgrade
Good product, good price. Install was a bit tricky for me as a first-timer but worked out. Performance improvement is definitely there.
GT40Marine 325 Shorty Water Box Exhaust
$550.00