Both the Formosa Marine GRT 425 Tiller 2026 and the Formosa Marine SRT 525 Side Console 2026 are V-hull designs, both built in aluminium, so the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?

On paper these two are close siblings in the size department - Formosa Marine GRT 425 Tiller 2026 at 14,5 ft versus Formosa Marine SRT 525 Side Console 2026 at 17,3 ft. Weight tells a clearer story for trailering families: the Formosa Marine SRT 525 Side Console 2026 tips the scales at 1 612 lbs - 895 lbs less than the Formosa Marine GRT 425 Tiller 2026 at 717 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.

The power gap is worth calling out. Rated to 150 hp, the Formosa Marine SRT 525 Side Console 2026 has a 90-hp advantage over the Formosa Marine GRT 425 Tiller 2026's 60-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load.

For family outings this is probably the sharpest distinction between the two. The Formosa Marine SRT 525 Side Console 2026 is rated for 5 passengers, while the Formosa Marine GRT 425 Tiller 2026 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Formosa Marine SRT 525 Side Console 2026 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The Formosa Marine SRT 525 Side Console 2026 comes in at 11 lbs per hp versus 12 lbs per hp for the Formosa Marine GRT 425 Tiller 2026. The lower the ratio the more explosive the acceleration - meaningful on a short RIB where bursts of speed, quick planing, and agility in surf or tight waterways define the experience.