SeaDoo Exhaust
GT40Marine Rear Exhaust Kit for 2016-2019 Sea-Doo RXP-X 300 | GT-RS15150
Sea-Doo RXP-X 300 Rear Exhaust Kit GT-RS15150 2016-19 is an exhaust-side upgrade for 2016-2019 RXP-X 300. It is built for riders who want a cleaner exhaust path, a sharper sound, and fitment support before checkout.
5.0 · 19 reviewsIn stock
$475.00
In stock - ships in 1-2 business days
1
Performance upgrade
GT40Marine Rear Exhaust Kit for 2016-2019 Sea-Doo RXP-X 300 | GT-RS15150. +5-10 HP listed performance benefit. Confirm exact year, model, hull/platform, and setup before ordering.
+5-10 HP listed performance benefit
Improves exhaust sound and flow
Pairs well with intake, tune, and stage upgrades
Fits:Sea-Doo RXP-X 300 T3-R 2016-2019 +5-10 HP
SKU
GT-RS15150
Install
Intermediate
Hull
T3-R
Engine
300 HP
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
Sea-Doo RXP-X 300 Rear Exhaust Kit GT-RS15150 2016-19 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 RXP-X 300 T3-R 2016-2019 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
GT-RS15150
MPN
GT-RS15150
Fits years
2016-2019
Install difficulty
Intermediate
Fits models
RXP-X 300
Engine / HP
300 HP
Hull type
T3-R
Platform
T3-R
Confirmed fitment
YearMakeModelEngineHullPlatform
Year:2016-2019Make:Sea-DooModel:RXP-X 300Engine:300 HPHull:T3-RPlatform:T3-R
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
- +5-10 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.
- Hull-sensitive part: do not assume fitment from engine horsepower alone.
- Check exhaust routing, outlet location, and any siphon-break requirements before ordering.
Compatibility warnings
Recommended upgrades
Complete the setup
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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.
Sea-Doo RXP-X 300 Rear Exhaust Kit GT-RS15150 2016-19
$475.00