Achilles FRB-104 2011 boat specs
Achilles
Achilles FRB-104 2011
2011
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VS
Achilles LT-4 2007 boat specs
Achilles
Achilles LT-4 2007
2007
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Achilles FRB-104 2011 vs Achilles LT-4 2007 — Same Brand, Different Boat

The Achilles FRB-104 2011 vs Achilles LT-4 2007 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.

On paper these two are close siblings in the size department — Achilles FRB-104 2011 at 10,3 ft versus Achilles LT-4 2007 at 8,0 ft. At 108 lbs and 56 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.

Both boats share a closely matched power ceiling — 15 hp for the Achilles FRB-104 2011 and 3 hp for the Achilles LT-4 2007. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup.

Both boats are rated for 4 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 Achilles FRB-104 2011 comes in at 7 lbs per hp versus 19 lbs per hp for the Achilles LT-4 2007. 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.

The Achilles FRB-104 2011 is an inflatable design — lighter, easier to store, and quicker to launch from a beach or dock without a slipway. The Achilles LT-4 2007 is a rigid hull, which typically offers a more confident ride in chop and easier maintenance over the long term.

Bottom line: The Achilles FRB-104 2011 at 10,3 ft is the right call if deck space, comfort, and entertaining are top of your list. The Achilles LT-4 2007 at 8,0 ft wins on trailering ease, likely lower purchase price, and simpler docking — a solid choice for a buyer who wants more boat for less money.
General Boat Info
MakeAchilles
MakeAchilles
ModelFRB-104
ModelLT-4
Model Year2011
Model Year2007
Measurements / Dimensions
Beam2 ft. 4 in. (72 cm) inside
Beam4 ft. 8 in. (142 cm)
Beam - Meters0.71
Beam - Meters1.42
Beam - Inches28
Beam - Inches56
Weight - Detail108 lbs. (49 kg)
Weight - Detail56 lbs. (25.5 kg)
Weight - kg48.99
Weight - kg25.4
Weight - lbs.108
Weight - lbs.56
Length - Feet10.33
Length - Feet8
Length overall - Detail10 ft. 4 in
Length overall - Detail8 ft. 6 in. (260 cm)
Length overall - Meters3.15
Length overall - Meters2.59
Length overall - Inches124
Length overall - Inches102
Length - Inchesnot available
Length - Inches6
Body / Hull
Hull materialInflatable
Hull materialnot available
Hull typeInflatable Non Rigid
Hull typenot available
Pontoon and Inflatable Specific
Tube diameter17 in. (43 cm)
Tube diameter15 in. (38 cm)
Number of tubes2 air chambers and keel
Number of tubesnot available
Engine and Drivetrain
Fuel typeGas
Fuel typenot available
Drive typeOutboard
Drive typeOutboard
Engine max15 hp
Engine max3 hp
Operational Info
Maximum capacity1,230 lbs. (560 kg)
Maximum capacity990 lbs. (450 kg)
Maximum people4
Maximum people4

Achilles FRB-104 2011 vs Achilles LT-4 2007 — Common Questions

Which is the larger boat — the Achilles FRB-104 2011 or the Achilles LT-4 2007?
The Achilles FRB-104 2011 is the longer of the two at 10,3 feet overall. The Achilles LT-4 2007 comes in at 8,0 feet, making it roughly 2,3 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Achilles FRB-104 2011 or the Achilles LT-4 2007?
For trailering, the Achilles LT-4 2007 has the edge at 56 lbs dry weight versus 108 lbs for the Achilles FRB-104 2011. 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 Achilles FRB-104 2011 is rated to a maximum of 15 hp, giving it the larger power ceiling. The Achilles LT-4 2007 tops out at 3 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 Achilles FRB-104 2011 is Coast Guard rated for 4 passengers, while the Achilles LT-4 2007 is certified for 4. 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 Achilles FRB-104 2011 has a better power-to-weight ratio at 7 lbs per hp compared to 19 lbs per hp for the Achilles LT-4 2007. A lower number means quicker acceleration and faster time to plane — the number that actually matters most on short, sporty boats like these.
Which boat is wider, and does it affect trailering?
The Achilles LT-4 2007 measures 56" wide, compared to 28" for the Achilles FRB-104 2011. 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.
Are the Achilles FRB-104 2011 and Achilles LT-4 2007 from the same manufacturer?
Yes — both the Achilles FRB-104 2011 and the Achilles LT-4 2007 are built by Achilles. 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.