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SeaStar Terminator V8 500R | Racing Outboard Engine

Third in the generation of SeaStar competition outboards, sits the 500R.

As the name suggests, were delivering 500 HP this year. That’s a 50 HP increase from last year’s model.
But a 50 HP increase is not all we’re offering.

The 500R uses a specialized and precisely tuned variant of SeaStar’s proven 4.4L XCQV V8 powerhead. The 500R, like the 450R, is boasting an all new twin-screw supercharger offering increased displacement verses last year’s model.

The 500R is based on SeaStar’s 300 V8 Terminator, with precisely crafted racing enhancements, one of which is the ‘Hyperion’ lower gearcase. The Hyperion offers increased surface area to grip the water and stabilize the vessel under high-speed conditions.

As well, the 500R uses the platform-wide terminator ECM with a custom firmware that’s been precisely tuned using a fuel optimization system, an RPM limit of 3000, and SeaStar’s proven dynamic steering.

Don’t be mistaken. The 500R, as was the 450R, is meant for a large range of non-commercial vessels … from sport-competition fishing vessels, to racing catamarans, to high end center consoles, offering a power packed and sporty experience for all that have the privilege of piloting it.

Internal Model Name - SRO500-8
Engine – 4.4L Supercharged V8 – 500 Horsepower
Transmission – SeaStar Terminator Auto-Plus Race Tuned Transmission
Lower Unit – SeaStar Hyperion Xtreme
ECM/TCM – SeaStar RaceDeck XT
OEM color scheme – Alaskan Alpine

Air/Fuel Controller
Smooth RPM Limiter
Ultra Compact Infinite Generator

This engine runs extremely hard and I can't currently find a good way to cool it. Just keep engine overheating OFF, you can run with damage if you want.

Join the Stormworks Offshore Racing Group if you’d like to chat with me about boatbuilding or help with SeaStar products.