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SeaDoo Performance
GT40Marine Performance Kit for GT40Marine
GT40 Marine Stage 2 Kit 230-300HP helps the engine breathe with a cleaner intake path for the supported supercharged application. It is a strong first upgrade and pairs well with catch cans, exhaust, cooling, and stage packages.
4.5 · 30 reviewsIn stock
$1,600.00
In stock - ships in 1-2 business days
1
Performance upgrade
GT40Marine Performance Kit for GT40Marine. +25-40 HP listed performance benefit. Confirm exact year, model, hull/platform, and setup before ordering.
+25-40 HP listed performance benefit
Improves airflow into the engine
Common first upgrade for supercharged builds
Fits:Sea-Doo Stage 2 Kit - verify exact machine +25-40 HP
SKU
Verify
Install
Advanced
Hull
Verify hull/platform
Engine
300 HP
Stage 2 performance kit for Sea-Doo 230-300HP models. Includes carbon fiber intake, TiAL BOV, intercooler tubing, and more.
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
GT40 Marine Stage 2 Kit 230-300HP supports airflow before the throttle body or supercharger so the rest of the performance package has a better foundation. Confirm engine family, vehicle type, hose routing, and filter clearance before installation, especially on modified machines or boat/Switch applications.
Best for: Sea-Doo Stage 2 Kit - verify exact machine riders who want a package approach with clear savings and fewer fitment questions.
Product data
Specs, fitment, and install notes
Brand
GT40Marine
SKU
Verify SKU
MPN
Verify MPN
Fits years
Verify year range
Install difficulty
Advanced
Fits models
Verify fitment before ordering
Engine / HP
300 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
- Matched parts shown in the product title/photos
- Stage-path support pieces listed on the product page
- Fitment review before install
Required add-ons / checks
- Tune review if required by the selected stage
- Fresh plugs and machine health check recommended
- Inspect couplers, clamps, and BOV/vacuum-port needs before install
- Boost/vacuum port adapter or intake manifold upgrade may be required for the BOV signal.
Performance benefits
- +25-40 HP listed performance benefit
- Improves airflow into the engine
- Common first upgrade for supercharged builds
- Supports cooler, more consistent charge air
- Helps reduce heat-related power fade
- Matched upgrade path with fewer fitment guesses
- Bundled parts simplify the build
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.
- Verify intake routing, filter clearance, and hose diameter for modified machines.
Compatibility warnings
- Fitment table hidden until GT40Marine confirms exact application.
Recommended upgrades
Complete the setup
Cross-sells are chosen from related systems, not random catalog placement.
FREQUENTLY BOUGHT TOGETHER
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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.
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