Kingfisher 1725 Flex SPT 2013 boat specs
Kingfisher
Kingfisher 1725 Flex SPT 2013
2013
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VS
Kingfisher 1875 Extreme Shallow CC 2013 boat specs
Kingfisher
Kingfisher 1875 Extreme Shallow CC 2013
2013
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Kingfisher 1725 Flex SPT 2013 vs Kingfisher 1875 Extreme Shallow CC 2013 — Same Brand, Different Boat

Matching a deep vee Kingfisher 1725 Flex SPT 2013 against a tunnel Kingfisher 1875 Extreme Shallow CC 2013 means you're likely deciding between two genuinely different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.

On paper these two are close siblings in the size department — Kingfisher 1725 Flex SPT 2013 at 17,5 ft versus Kingfisher 1875 Extreme Shallow CC 2013 at 18,0 ft. At 156 lbs and 181 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.

The power gap is worth calling out. Rated to 200 hp, the Kingfisher 1875 Extreme Shallow CC 2013 has a 50-hp advantage over the Kingfisher 1725 Flex SPT 2013's 150-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 35 gal and 36 gal — so range won't be a tiebreaker here.

Both boats are rated for 5 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.

At this size, power-to-weight ratio matters more than outright horsepower. The Kingfisher 1875 Extreme Shallow CC 2013 comes in at 1 lbs per hp versus 1 lbs per hp for the Kingfisher 1725 Flex SPT 2013. 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.

Bottom line: Performance buyers should lean toward the Kingfisher 1875 Extreme Shallow CC 2013 and its 200-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Kingfisher 1725 Flex SPT 2013 with its 150-hp rating is the more economical daily driver.
General Boat Info
MakeKingfisher
MakeKingfisher
Model1725 Flex SPT
Model1875 Extreme Shallow CC
Model Year2013
Model Year2013
Measurements / Dimensions
Beam96 in. (2.45 m)
Beam88 in. (2.24 m)
Beam - Meters2.44
Beam - Meters2.24
Beam - Inches96
Beam - Inches88
Deadrise18° variable
Deadrise8° constant
Weight - Detail1,560 lbs. (708 kg)
Weight - Detail1,810 lbs. (820 kg)
Weight - kg707.6
Weight - kg821
Weight - lbs.156
Weight - lbs.181
Width [transom] - DetailBottom: 82 in. (2.08 cm)
Width [transom] - DetailBottom: 66 in. (1.68 m)
Height - DetailSide: 27 in. (68.5 cm)
Height - DetailSides: 28 in. (71 cm)
Height - Meters0.69
Height - Meters0.71
Height - Inches27
Height - Inches28
Height [transom]25 in. (64 cm)
Height [transom]not available
Length - Feet17.5
Length - Feet18
Length overall - Detail17 ft. 6 in. (5.33 m)
Length overall - Detail18 ft. (5.5 m)
Length overall - Meters5.33
Length overall - Meters5.49
Length overall - Inches21
Length overall - Inches216
Body / Hull
Hull materialAluminum
Hull materialAluminum
Hull thicknessSide: 0.125 in. (3.2 mm) Bottom: 0.160 in. (4 mm)
Hull thicknessSide: 0.102 in. (2.6 mm) 0.190 in. (4.82 mm)
Hull typeDeep Vee
Hull typeTunnel
Engine and Drivetrain
Fuel tank capacity - Detail35 gal. (132 l)
Fuel tank capacity - Detail36 gal. (136 l)
Fuel tank capacity - Liters132.49
Fuel tank capacity - Liters136.27
Fuel tank capacity - Gal35
Fuel tank capacity - Gal36
Fuel typeGas
Fuel typeGas
Engine max150 hp
Engine maxnot available
Engine makenot available
Engine makeMercury
Engine modelnot available
Engine modelOptimax Sport Jet
Horsepowernot available
Horsepower200 hp
Trailer Info
Trailer - DetailEZ Loader
Trailer - DetailEZ Loader
Trailer - Weight2,800 lbs
Trailer - Weight2,800 lbs

Kingfisher 1725 Flex SPT 2013 vs Kingfisher 1875 Extreme Shallow CC 2013 — Common Questions

Which is the larger boat — the Kingfisher 1725 Flex SPT 2013 or the Kingfisher 1875 Extreme Shallow CC 2013?
The Kingfisher 1875 Extreme Shallow CC 2013 is the longer of the two at 18,0 feet overall. The Kingfisher 1725 Flex SPT 2013 comes in at 17,5 feet, making it roughly 0,5 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Kingfisher 1725 Flex SPT 2013 or the Kingfisher 1875 Extreme Shallow CC 2013?
For trailering, the Kingfisher 1725 Flex SPT 2013 has the edge at 156 lbs dry weight versus 181 lbs for the Kingfisher 1875 Extreme Shallow CC 2013. Add a motor (typically 300–500 lbs for an outboard in this class), gear, and a partial fuel load and the difference grows. Lighter is friendlier on smaller tow vehicles and on fuel economy while hauling.
Which boat can handle a bigger outboard?
The Kingfisher 1875 Extreme Shallow CC 2013 is rated to a maximum of 200 hp, giving it the larger power ceiling. The Kingfisher 1725 Flex SPT 2013 tops out at 150 hp. Keep in mind that maximum ratings are just that — matching the motor to the actual load and usage pattern usually matters more than chasing the ceiling.
How many people can each boat hold?
The Kingfisher 1725 Flex SPT 2013 is Coast Guard rated for 5 passengers, while the Kingfisher 1875 Extreme Shallow CC 2013 is certified for 5. Note that legal capacity and comfortable capacity aren't always the same thing — on a full day out, most experienced boaters aim for about 80% of the rated number to keep things comfortable.
Which boat has the better power-to-weight ratio?
The Kingfisher 1875 Extreme Shallow CC 2013 has a better power-to-weight ratio at 1 lbs per hp compared to 1 lbs per hp for the Kingfisher 1725 Flex SPT 2013. A lower number means quicker acceleration and faster time to plane — the number that actually matters most on short, sporty boats like these.
What do the trailers weigh for the Kingfisher 1725 Flex SPT 2013 and Kingfisher 1875 Extreme Shallow CC 2013?
The trailer for the Kingfisher 1725 Flex SPT 2013 is listed at 2,800 lbs and the Kingfisher 1875 Extreme Shallow CC 2013 trailer at 2,800 lbs. Always add trailer weight to the boat's dry weight when checking your tow vehicle's gross trailer weight rating.
Which boat is wider, and does it affect trailering?
The Kingfisher 1725 Flex SPT 2013 measures 96" wide, compared to 88" for the Kingfisher 1875 Extreme Shallow CC 2013. The US standard-width towing limit is 8’6" (102") in most states — anything over that may need a wide-load permit. Confirm your specific route requirements with each state's DOT.
How do the fuel tanks compare on the Kingfisher 1725 Flex SPT 2013 and Kingfisher 1875 Extreme Shallow CC 2013?
Both boats carry similar fuel loads — 35 gallons and 36 gallons respectively. Range will depend heavily on motor choice, throttle usage, and whether you're on flat lake water or coastal chop.
Are the Kingfisher 1725 Flex SPT 2013 and Kingfisher 1875 Extreme Shallow CC 2013 from the same manufacturer?
Yes — both the Kingfisher 1725 Flex SPT 2013 and the Kingfisher 1875 Extreme Shallow CC 2013 are built by Kingfisher. That means shared dealer networks, common parts availability, and consistent build quality across the line. The choice between them is essentially a question of how much boat you need, not which brand you trust.