Granfort 370 GTXvs.Formula 360 CBR
What buyers need to know.
This guide is for buyers comparing a 37-foot sport cruiser with one of the most respected performance-crossover bowriders in the market. The goal is not to decide which boat is impressive — both are. The real question is which boat better fits your mission: open-bow day performance, or a wider, warranty-backed sport-cruiser platform built for the full weekend.
This guide is for buyers who want to understand whether Granfort should be on the first-choice list.
The Formula 360 CBR is a genuinely respected performance crossover bowrider — 70 years of Formula racing DNA, a stepped FAS3Tech hull, and a design team with real Le Mans pedigree behind the pen. The Granfort 370 GTX offers a different kind of elevated experience: a 37-foot sport cruiser built around a wider beam, an enclosed dry head, an open social cockpit, published sea-trial performance, and a written 10-year structural warranty.
The single most important number in this comparison isn't only speed or price. It's 11'6" of beam and a written warranty. For the buyer, extra beam means more usable cockpit space, more separation between social areas, and a steadier platform at anchor — while the Granfort still delivers a factory-tested 51.1 mph top speed and a fully documented RPM-by-RPM performance curve.
If your goal is maximum open-bow performance and customizable power up to a triple-outboard setup, the Formula deserves serious attention — it's a fast, well-built boat with real racing heritage. If your goal is a wider sport-cruiser ownership experience with a published warranty, certified construction, and a more enclosed weekend layout, the Granfort becomes the more serious choice.
Buyer education first
Before comparing features, understand what you are actually comparing.
This is not simply Granfort versus Formula. It is a performance crossover bowrider versus a certified sport-cruiser weekender.
The Formula 360 CBR is designed around open-bow, single-level-cockpit day performance: a walk-through windshield, U-shaped bow lounge seating, a glass-sunroof hardtop, and up to triple-outboard power options topping out near 64 mph in independent testing. Formula's own designer describes it as "a true blend of entertainment-ready comfort and the exhilarating agility that is rooted in our performance heritage." That is the correct frame for this boat.
The Granfort 370 GTX is built around a broader ownership mission. Its enclosed dry head, social cockpit, wider 11'6" beam, published 10-year structural warranty, and ABYC/USCG-certified construction give the buyer a more complete confidence package than a customizable dayboat platform typically publishes. The difference becomes clear at the stern, where the Granfort's open-air social layout and grill/table area create a second gathering zone beyond the cockpit.
Simple decision frame: Choose the Formula if your main mission is open-bow performance day boating with flexible, race-bred power options. Choose the Granfort if you want a wider-beam sport cruiser with a published warranty, certified construction, and a lower published entry price for a comparable size class.
More cruiser confidence. More racing pedigree. Two very different ownership arguments.
Formula deserves respect as a performance-built crossover bowrider. That makes this comparison more credible — not less.
Granfort 370 GTXMore warranty confidence. More certified construction.
The dedicated sport cruiser argument.
Granfort wins when the buyer evaluates the full ownership equation instead of the dock-side first impression: a written structural warranty, published certification, a wider beam, and a lower published starting price for a comparably sized platform.
- 11'6" beam vs 11'3" Formula
- 10-year structural warranty · hull + deck
- ABYC + USCG · certified, published in brochure
- $439,900 starting · $546,800 fully loaded
More power headroom. More racing pedigree.
The performance-crossover argument.
Formula is strong exactly where a 70-year performance builder should be strong: FAS3Tech stepped-hull engineering, a flexible power ladder up to triple outboards, and a design language shaped by Formula 1-trained hands.
- 63.4 mph tested · triple 400 HP outboards
- 6'2"–6'4" published cabin headroom
- FAS3Tech stepped hull + structural grid
- 70 yrs Formula performance heritage
Performance should be measured, not guessed. Here are the instrumented, RPM-by-RPM numbers.
The Formula 360 CBR numbers below come from Boating Magazine's independent instrumented test. The Granfort 370 GTX numbers come from Granfort's own factory sea-trial report for hull #FK370GTX-67 — full RPM sweep, GPS-measured speed, dated 23 Aug 2024. Both are primary, instrumented data, not marketing rounding.
Granfort 370 GTX
Factory sea trial · hull #67| Boat weight, no engines | 13,613 lb |
| Engines | 2 × 400 HP Mercury Verado V10 |
| Test weight, 7 persons | 17,028 lb |
| Test weight, 14 persons | 19,858 lb |
| Top speed @ 6,410 RPM | 51.1 mph (7p) / 49.0 mph (14p) |
| Time to plane | 8.94 sec (7p) / 11.27 sec (14p) |
| 0–30 mph | 10.18 sec (7p) / 12.66 sec (14p) |
| Min. planing speed | 29.5 mph |
| Fuel burn @ WOT | 74.0 GPH |
Formula 360 CBR
Boating Magazine test| Displacement, with outboards | 18,700–19,100 lb |
| Test engines | Triple 400 HP Mercury Verado |
| Test crew / fuel load | 450 lb crew · 250 gal fuel |
| Top speed @ 6,380 RPM | 63.4 mph |
| Most economical cruise | 44.3 mph @ 4,500 RPM |
| Cruise fuel burn | 50.8 GPH (0.9 mpg) |
| Draft, max (triple OB) | 4'1" |
| Fuel burn @ WOT | 101.8 GPH |
| RPM | Granfort MPH · GPH (7p) | Formula MPH · GPH (triple 400) |
|---|---|---|
| 2,000 | 9.1 mph · 10.1 GPH | 9.6 mph · 16.3 GPH |
| 2,500 | 10.4 mph · 12.6 GPH | 10.0 mph · 23.9 GPH |
| 3,000 | 12.2 mph · 18.0 GPH | 15.9 mph · 28.7 GPH |
| 3,500 | 15.6 mph · 24.1 GPH | 21.5 mph · 34.5 GPH |
| 4,000 | 19.6 mph · 31.8 GPH | 35.0 mph · 40.1 GPH |
| 4,500 | 33.8 mph · 35.9 GPH | 44.3 mph · 50.8 GPH |
| 5,500 | 43.8 mph · 58.2 GPH | 55.0 mph · 79.5 GPH |
| 6,400+ (WOT) | 51.1 mph · 74.0 GPH | 63.4 mph · 101.8 GPH |
Granfort figures: factory performance-test report, hull FK 370 GTX #67, twin Mercury Verado V10 400 HP, 19" pitch three-blade stainless prop, GPS-measured, 7-person / 80% fuel test condition, dated 23 Aug 2024 (Ricardo Bedin). Granfort GPH converted from liters/hr in the factory report (3.785 L = 1 gal). Formula figures: Boating Magazine, "2026 Formula 360 CBR Outboard Boat Test," triple Mercury Verado 400 HP, tested at 450 lb crew and 250 gal fuel; GPH figures published directly in the magazine's efficiency table.
Two very different curves — same twin-vs-triple story, visualized.
Range calculated as speed ÷ fuel burn × usable fuel capacity at each tested RPM (Granfort: 222 gal; Formula: 275 gal, per Boating Magazine's published range table). Both curves show the same "hump" — range dips as the hull pushes through pre-planing resistance, then recovers once on plane. Fuel consumption chart plots the same GPH figures used to calculate that range — Formula burns more at every RPM point, carrying 50% more total horsepower.
The builder behind the boat
Brazilian production discipline meets American racing heritage.
Fibrafort gives Granfort manufacturing credibility before the comparison even begins. Granfort is the U.S. export brand of Fibrafort, a Brazilian manufacturer founded in 1990 with more than 35 years of boatbuilding experience, 18,000+ boats produced, and exports to more than 40 countries. Fibrafort's production processes are advised by Porsche Consulting — covering development, logistics, material planning, and lean manufacturing — with published results including material costs reduced 10%, extra daily parts orders cut 90%, and overtime reduced 48%.
Formula carries a different kind of pedigree. Founded by performance icon Don Aronow and family-led by the Porter family for decades, Formula built its identity on offshore-racing engineering — the FAS3Tech stepped hull and structural grid trace directly back to that heritage. The 360 CBR is the first model penned by designer Michael Young, mentored by longtime Formula designer John Adams, bringing Le Mans-influenced automotive detailing to the helm and cockpit.
Open-bow performance dayboat, or wider warranty-backed weekender? The right choice depends on the lifestyle you want to create.
Built for the run and the reveal
Formula's lifestyle is built around open-bow social use, wide-open throttle performance, and automotive-grade detailing: a walk-through windshield, U-shaped bow lounge, Rockford Fosgate zoned sound, and up to triple-outboard power for buyers who want the fastest boat at the sandbar.
Granfort 370 GTXBuilt for the whole weekend
Granfort's lifestyle is different: coastal cruising, overnight stays, an enclosed dry head, a social cockpit, and a wider stance at anchor — backed by a published 10-year structural warranty and ABYC/USCG certification, at a starting price well below Formula's build-your-own entry point.
The warranty is the builder's confidence statement. Granfort makes it visible early.
For many buyers, brand recognition reduces perceived risk. Granfort reduces that risk differently: with published certification, published warranty coverage, and a dedicated service-management support structure.
10-Year Structural
Hull + deck both covered · published as ABYC + USCG compliant · published in Granfort materials · confidence point for long-term ownership.
Confirm in Writing
Established American builder with 70 years of history and family ownership. Serious buyers should request exact structural and gelcoat warranty terms from the selling dealer before purchase.
The real equation continues after the purchase.
A smart buyer does not compare only MSRP. The stronger question is what the boat costs, protects, and delivers over several seasons of ownership.
Granfort's ownership case is built around a single, fully instrumented factory test: 51.1 mph top speed, a documented fuel-burn curve from idle to wide-open throttle, an 11'6" beam, and a 10-year structural warranty — starting at $439,900 and topping out around $546,800 fully loaded. That combination gives the buyer a straightforward, verifiable way to evaluate value across the whole options range.
Formula's value is also real: a flexible power ladder from twin sterndrives to triple 400 HP outboards, a stepped racing-derived hull, and strong standard equipment — but the as-tested price of the triple-400 configuration Boating Magazine reviewed was $989,080, and a lower-power starting build has been reported around $737,000 by Southern Boating. Even a fully loaded Granfort at $546,800 comes in well under either Formula figure. The decision depends on whether Formula's power ceiling and performance pedigree matter more than Granfort's warranty confidence and lower cost of entry — loaded or not.
Granfort 370 GTX vs Formula 360 CBR — the numbers serious buyers should review.
Use the table as a practical reference. Highlighted rows show where Granfort's ownership case becomes strongest: beam, warranty, certification, and starting price.
| Category | Granfort 370 GTX | Formula 360 CBR | Buyer Meaning |
|---|---|---|---|
| Boat category | Dedicated 37 ft sport cruiser · overnight primary | Performance crossover bowrider · day-boat primary, overnight capable | Different missions. Buy the boat whose category matches your actual primary use. |
| Starting price | $439,900 starting · $546,800 fully loaded | $989,080 as-tested (triple 400) · ~$737,000 lower-power starting reported | Even a fully loaded Granfort undercuts Formula's lower-power starting price by roughly $190,000. |
| LOA | 37 ft 0 in published · 36 ft 2 in (11.03 m) per factory sea-trial hull measurement | 36 ft 0 in (38'6" with extended swim platform) | Close on paper either way. Formula's optional extended platform can add usable length aft. |
| Beam | 11 ft 6 in published (11 ft 7 in per hull measurement) | 11 ft 3 in | Granfort is 3-4 inches wider, supporting cockpit space and stability at anchor. |
| Draft, maximum | 2 ft 6 in (0.75 m) | 3 ft 9 in (dual OB) / 4 ft 1 in (triple OB) | Granfort's shallower draft opens up more skinny-water anchorages and sandbars. |
| Weight, as tested | 17,028 lb (7 persons) / 19,858 lb (14 persons), factory sea trial | 18,700–19,100 lb published displacement with outboards | Granfort's figures are actual test weights, not a spec-sheet displacement estimate. |
| Top speed | 51.1 mph GPS-measured, factory sea trial (7 persons) | 63.4 mph GPS-measured, Boating Magazine test (triple 400 outboards) | Formula's extra 400 HP (1,200 vs 800 total) buys real, measured top-end speed. |
| Power options | Twin 400 HP Mercury Verado (single spec) | Twin sterndrive 380–520 HP, or twin/triple outboard up to 1,200 HP total | Formula offers far more power flexibility; Granfort offers one well-defined, published configuration. |
| Cruise fuel burn | 35.9 GPH @ 33.8 mph (4,500 RPM), factory test | 50.8 GPH @ 44.3 mph (4,500 RPM), most economical cruise per Boating Magazine | Both figures are instrumented test data at a comparable RPM — Formula is faster but burns more in absolute terms. |
| Fuel capacity | 222 gal | 275 gal (outboard) / 200 gal (sterndrive) | Formula's outboard configuration carries meaningfully more fuel for range. |
| Fresh water | 38 gal | 36 gal | Granfort carries slightly more fresh water for weekend utility. |
| Cabin headroom | 6 ft 0 in | 6 ft 2 in – 6 ft 4 in published | Formula's stand-up cabin publishes taller headroom. |
| Cabin / overnight | Cabin, galley, enclosed dry head · 14 day / 4 night published | Full-size aft double berth, stand-up cabin, full-height private head | Both offer real overnight capability with different layouts — Granfort's capacity is formally published. |
| Hardtop | Open / options vary | Standard glass-sunroof hardtop | Formula's standard powered-shade hardtop is a real day-use advantage. |
| Structural warranty | 10-year structural hull + deck | Confirm specific terms with dealer | Granfort's published warranty is one of its strongest risk-reduction points. |
| Certification | ABYC + U.S. Coast Guard · published | American-built · verify unit documentation | Granfort makes the certification claim explicit in published materials. |
| Manufacturing pedigree | Fibrafort + Porsche Consulting-advised process improvements | 70-year Formula / Porter family racing heritage | Both have real credibility — Formula on performance lineage, Granfort on certified process discipline. |
Evaluate the decision like an owner, not only like a shopper.
These six points — in the order most buyers actually work through them — help move from attraction to confidence.
Certification
Granfort publishes ABYC + U.S. Coast Guard certification. That gives U.S. buyers a clear confidence point for ownership, insurance, financing, and resale conversations.
Warranty
Granfort's 10-year structural warranty covering hull and deck is a key risk-reduction message and should be presented before final decision logic.
Construction
Manufacturing process, material choices, and quality discipline matter because the buyer is evaluating a long-term asset, not just a weekend toy.
Performance
Both boats are fast. The better question is how speed, power flexibility, and fuel burn work together for the owner's real use.
Ownership cost
Starting price, fuel burn, warranty, and service expectations should be part of the buying decision before signing — not discovered afterward.
Mission fit
This is the deciding point: open-bow performance day use, or wider-beam sport-cruiser ownership. The best boat is the one built for how the buyer actually boats.
Choose based on your actual mission — not first impressions at the dock.
Open-bow performance and power flexibility
- Maximum published top speed with triple-outboard power
- A racing-derived stepped hull and structural grid
- A standard glass-sunroof hardtop with powered shade
- Taller published cabin headroom for a couple's overnight
- 70 years of Formula racing and design heritage
- A flexible power ladder to build toward your ideal spec
Choose the Granfort 370 GTX if you prioritizeWarranty confidence and a wider social platform
- A wider 11'6" beam for cockpit space and stability at anchor
- Published 10-year structural warranty · hull + deck
- ABYC + U.S. Coast Guard certification published in brand materials
- A fully documented, instrumented 51.1 mph performance curve
- A lower published starting price for a comparably sized platform
- A rising brand backed by Fibrafort's manufacturing experience
Formula does its job well. Granfort makes the ownership case simpler.
The Formula 360 CBR is a genuinely impressive performance crossover bowrider. For buyers who prioritize maximum speed, a flexible power ladder, and open-bow day-boating energy backed by 70 years of racing heritage, it is a strong and credible choice — provided the buyer confirms exact structural warranty terms and is comfortable with a starting price that climbs quickly toward seven figures once optioned.
The Granfort 370 GTX becomes the stronger first-choice option when the buyer compares the full ownership equation: 11'6" beam, a factory-instrumented 51.1 mph top speed, a fully documented fuel-burn curve, ABYC and U.S. Coast Guard certification, Fibrafort manufacturing credibility advised by Porsche Consulting, and a 10-year structural warranty covering hull and deck — starting at $439,900 and topping out around $546,800 fully loaded, well under Formula's as-tested price of $989,080.
For buyers who want more than a power ladder to climb — buyers who want a sport cruiser they can trust, enjoy, and confidently own — Granfort deserves to be on the first-choice list.
The best way to understand Granfort is to see it, walk through it, and experience it on the water.
Private showings and sea trials are available in Florida.
