Sylvan 1700 Avenger SC 2004 boat specs
Sylvan
Sylvan 1700 Avenger SC 2004
2004
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VS
Sylvan Mirage 8520 F-N-C 2009 boat specs
Sylvan
Sylvan Mirage 8520 F-N-C 2009
2009
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Sylvan 1700 Avenger SC 2004 vs Sylvan Mirage 8520 F-N-C 2009 — Same Brand, Different Boat

The Sylvan 1700 Avenger SC 2004 vs Sylvan Mirage 8520 F-N-C 2009 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.

Both boats share a closely matched power ceiling — 135 hp for the Sylvan 1700 Avenger SC 2004 and 115 hp for the Sylvan Mirage 8520 F-N-C 2009. 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.

For family outings this is probably the sharpest distinction between the two. The Sylvan Mirage 8520 F-N-C 2009 is rated for 12 passengers, while the Sylvan 1700 Avenger SC 2004 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sylvan Mirage 8520 F-N-C 2009 could be the deciding factor.

Bottom line: Choose the Sylvan Mirage 8520 F-N-C 2009 if your priority is putting more people on the water — it handles 12 passengers and at 2,0 ft it has the deck room to back that rating up comfortably. The Sylvan 1700 Avenger SC 2004 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.
General Boat Info
MakeSylvan
MakeSylvan
Model1700 Avenger SC
ModelMirage 8520 F-N-C
Model Year2004
Model Year2009
Measurements / Dimensions
Beam91 in
Beam102 in
Beam - Meters2.31
Beam - Meters2.59
Beam - Inches91
Beam - Inches102
Depth - Detail23 in
Depth - Detailnot available
Depth - Centimeters58.42
Depth - Centimetersnot available
Depth - Inches23
Depth - Inchesnot available
Weight - Detail1125 lbs
Weight - Detail1,875 lbs
Weight - kg510.29
Weight - kg850.49
Weight - lbs.1125
Weight - lbs.1875
Width [transom] - Detail90 in
Width [transom] - Detailnot available
Height - Detail31 in
Height - Detailnot available
Height - Meters0.79
Height - Metersnot available
Height - Inches31
Height - Inchesnot available
Height [transom]LS
Height [transom]not available
Length overall - Detail17 ft
Length overall - Detail20 ft. 3 in
Length overall - Meters5.18
Length overall - Meters6.17
Length overall - Inches204
Length overall - Inches243
Length - Feetnot available
Length - Feet2
Length - Inchesnot available
Length - Inches3
Body / Hull
Hull thicknessBottom: 0.100 Side: 0.086 Rib: 0.1
Hull thicknessnot available
Hull materialnot available
Hull materialAluminum
Hull typenot available
Hull typePontoon
Engine and Drivetrain
Fuel tank capacity - Detail31 gal
Fuel tank capacity - Detailnot available
Fuel tank capacity - Liters117.35
Fuel tank capacity - Litersnot available
Fuel tank capacity - Gal31
Fuel tank capacity - Galnot available
Engine max135 hp
Engine max115 hp Tri Toon (Max): 150 hp
Max no of enginesnot available
Max no of engines1
Fuel typenot available
Fuel typeGas
Drive typenot available
Drive typeOutboard
Operational Info
Maximum capacity1300 lbs
Maximum capacity2,000 lbs
Maximum people5
Maximum people12
Pontoon and Inflatable Specific
Tube diameternot available
Tube diameter25 in
Tube gaugenot available
Tube gauge0.080 in
Number of tubesnot available
Number of tubes2

Sylvan 1700 Avenger SC 2004 vs Sylvan Mirage 8520 F-N-C 2009 — Common Questions

Which is easier to trailer — the Sylvan 1700 Avenger SC 2004 or the Sylvan Mirage 8520 F-N-C 2009?
For trailering, the Sylvan 1700 Avenger SC 2004 has the edge at 1 125 lbs dry weight versus 1 875 lbs for the Sylvan Mirage 8520 F-N-C 2009. 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 Sylvan 1700 Avenger SC 2004 is rated to a maximum of 135 hp, giving it the larger power ceiling. The Sylvan Mirage 8520 F-N-C 2009 tops out at 115 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 Sylvan 1700 Avenger SC 2004 is Coast Guard rated for 5 passengers, while the Sylvan Mirage 8520 F-N-C 2009 is certified for 12. 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 is wider, and does it affect trailering?
The Sylvan Mirage 8520 F-N-C 2009 measures 102" wide, compared to 91" for the Sylvan 1700 Avenger SC 2004. 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 Sylvan 1700 Avenger SC 2004 and Sylvan Mirage 8520 F-N-C 2009 from the same manufacturer?
Yes — both the Sylvan 1700 Avenger SC 2004 and the Sylvan Mirage 8520 F-N-C 2009 are built by Sylvan. 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.