Delivery, customs and taxes
Know the landed cost before you order
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For UK customers, prices include VAT, customs and delivery unless checkout states otherwise. Outside the UK, shipping is shown at checkout and local customs and taxes remain your responsibility.
Lead times and urgent orders
Check timing before you commit
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Some products are made to order, imported or custom built. If timing matters, contact us before ordering and we will confirm the expected delivery timeframe.
Fitment checked before you order
Send the vehicle, engine and current setup if you want us to confirm the exact application before checkout.
Custom ECU tuning for the 2025 Sea-Doo GTR-X 300, calibrated by Lukos Engineering. The GTR-X 300 already punches hard for its size; a machine-specific calibration sharpens how that delivery arrives - response and consistency refined from your craft's data, not a file built for someone else's. Choose the tune with the tuning device included, or tune only if you already run compatible hardware.
Best For
GTR-X 300 owners refining response for harder riding
Riders who want their specific craft calibrated, modifications included
Owners choosing data-driven work over generic flashes
Key Specs
Provider: Lukos Engineering
Service Type: Custom ECU tuning
Vehicle Application: 2025 Sea-Doo GTR-X 300
Options: Tune and Tuning Device; Tune Only
Fitment And Setup Checks
Confirm your craft is the 2025 GTR-X 300 before ordering and mention any modifications. Recent Sea-Doo ECUs can require an unlocking step before calibration - check the requirements for your exact craft with us first so the process is planned end to end. Tune-only assumes you already own compatible hardware.
Technical specifications
Provider
Lukos Engineering
Service
Custom ECU tuning
Application
Sea-Doo GTR-X 300, 2025
Options
Tune + device; tune only
Frequently asked questions
Will my ECU need unlocking?
Possibly - some 2025 Sea-Doo ECUs require an unlock before tuning. Check with us for your craft before ordering.
Which option do I need?
Tune-only if you already run compatible tuning hardware; otherwise take the option with the device included.
Confirm the craft and let the GTR-X be calibrated around the way you actually ride it.
Delivery, customs and taxes
Know the landed cost before you order
For UK customers, prices include VAT, customs and delivery unless checkout states otherwise. For customers outside the UK, local customs and taxes remain your responsibility, and shipping is shown at checkout. If a shipping option is not available, email us and we will prepare a tailored quote.
Lead times and urgent orders
Check timing before you commit
Many of the products we sell are made to order, imported or custom built, so a lead time may apply. If you need a part urgently, contact us before ordering and we will confirm the expected delivery timeframe and process.
Fitment first
Check fit before you order
Model year, engine, drivetrain, hardware and existing modifications can all change what fits. Check the applications and supplier notes above, or send us your exact vehicle and setup before ordering.
Check vehicle fitment
Need help with this product?
Send us your vehicle, year, current setup and any fitting date, event, trip or deadline before ordering. We will help check fitment, product choice and timing.