ThunderJet Alexis Classic - 21 ft. 2008 vs ThunderJet Luxor OB OS 2011 - Boat Spec Comparison

Q: Which is the larger boat - the ThunderJet Alexis Classic - 21 ft. 2008 or the ThunderJet Luxor OB OS 2011?

The ThunderJet Alexis Classic - 21 ft. 2008 is the longer of the two at 21,0 feet overall. The ThunderJet Luxor OB OS 2011 comes in at 20,0 feet, making it roughly 1,0 ft shorter - a meaningful difference in deck room and overall on-water presence.

Q: Which boat can handle a bigger outboard?

The ThunderJet Alexis Classic - 21 ft. 2008 is rated to a maximum of 500 hp, giving it the larger power ceiling. The ThunderJet Luxor OB OS 2011 tops out at 225 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.

Q: How many people can each boat hold?

The ThunderJet Alexis Classic - 21 ft. 2008 is Coast Guard rated for 8 passengers, while the ThunderJet Luxor OB OS 2011 is certified for 6. 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.

Q: Do these boats require an oversize trailer permit to tow on US highways?

Both the ThunderJet Alexis Classic - 21 ft. 2008 and ThunderJet Luxor OB OS 2011 share an 96 in. beam - meaning both sit right at the 8’6" threshold that most US states use for standard-width loads. In most states you can tow at that width without a special permit, but regulations vary. Always check the rules for your state and any states you'll be passing through before your first long haul.

Q: Which boat has the larger fuel tank - the ThunderJet Alexis Classic - 21 ft. 2008 or the ThunderJet Luxor OB OS 2011?

The ThunderJet Alexis Classic - 21 ft. 2008 has the bigger tank at 80 gallons, versus 48 gallons on the ThunderJet Luxor OB OS 2011. That 32-gallon difference translates to roughly 96–160 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Q: Are the ThunderJet Alexis Classic - 21 ft. 2008 and ThunderJet Luxor OB OS 2011 from the same manufacturer?

Yes - both the ThunderJet Alexis Classic - 21 ft. 2008 and the ThunderJet Luxor OB OS 2011 are built by ThunderJet. 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.

Boat Comparison

ThunderJet Alexis Classic - 21 ft. 2008 vs ThunderJet Luxor OB OS 2011

ThunderJet

ThunderJet Alexis Classic - 21 ft. 2008

2008

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ThunderJet

ThunderJet Luxor OB OS 2011

2011

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Detailed Evaluation & Buyer Recommendation

ThunderJet Alexis Classic - 21 ft. 2008 vs ThunderJet Luxor OB OS 2011: Same Brand, Different Boat

The ThunderJet Alexis Classic - 21 ft. 2008 is a modified-V design and the ThunderJet Luxor OB OS 2011 is a deep-V design, so you're likely deciding between two noticeably different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.

The power gap is worth calling out. Rated to 500 hp, the ThunderJet Alexis Classic - 21 ft. 2008 has a 275-hp advantage over the ThunderJet Luxor OB OS 2011's 225-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the ThunderJet Alexis Classic - 21 ft. 2008 carries 80 gallons versus 48 gallons in the ThunderJet Luxor OB OS 2011. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

For family outings this is probably the sharpest distinction between the two. The ThunderJet Alexis Classic - 21 ft. 2008 is rated for 8 passengers, while the ThunderJet Luxor OB OS 2011 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the ThunderJet Alexis Classic - 21 ft. 2008 could be the deciding factor.

Bottom line: Choose the ThunderJet Alexis Classic - 21 ft. 2008 if your priority is putting more people on the water - it handles 8 passengers and at 21,0 ft it has the deck room to back that rating up comfortably. The ThunderJet Luxor OB OS 2011 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.

General Boat Info

MakeThunderJet

ModelAlexis Classic - 21 ft.

ModelLuxor OB OS

Model Year2008

Model Year2011

Measurements / Dimensions

Beam96 in.

Beam - Meters2.44

Beam - Inches96

Width [transom] - Detail34 in.

Width [transom] - Detailnot available

Height - DetailSides: 34 in.

Height - DetailSides: 38 in.

Height - Meters0.86

Height - Meters0.97

Height - Inches34

Height - Inches38

Length - Feet21

Length - Feet20

Length overall - Detail21 ft. 0 in.

Length overall - Detail20 ft.

Length overall - Meters6.4

Length overall - Meters6.1

Length overall - Inches252

Length overall - Inches240

Deadrisenot available

Deadrise18°

Height [transom]not available

Height [transom]38 in.

Body / Hull

Hull materialAluminum

Hull thickness0.190 in.

Hull thicknessSides: 0.125 in. Bottom: 0.190 in. Transom: 0.190 in.

Hull typeModified Vee

Hull typeDeep Vee

Engine and Drivetrain

Engine/s standardPort fuel injected 350; 325 hp

Engine/s standardnot available

ImpellerTurbo

Impellernot available

Jet pumpHamilton 212

Jet pumpnot available

Fuel tank capacity - Detail80 gal.

Fuel tank capacity - Detail48 gal.

Fuel tank capacity - Liters302.83

Fuel tank capacity - Liters181.7

Fuel tank capacity - Gal80

Fuel tank capacity - Gal48

Fuel typeGas

Drive typeJet Drive

Drive typeOutboard

Engine max500 hp

Engine max225 hp

Operational Info

Maximum capacity1,800 lbs.

Maximum capacitynot available

Maximum people8 / 1,750 lbs.

Maximum peoplenot available

ThunderJet Alexis Classic - 21 ft. 2008 vs ThunderJet Luxor OB OS 2011 - Common Questions

Which is the larger boat - the ThunderJet Alexis Classic - 21 ft. 2008 or the ThunderJet Luxor OB OS 2011?

The ThunderJet Alexis Classic - 21 ft. 2008 is the longer of the two at 21,0 feet overall. The ThunderJet Luxor OB OS 2011 comes in at 20,0 feet, making it roughly 1,0 ft shorter - a meaningful difference in deck room and overall on-water presence.

Which boat can handle a bigger outboard?

The ThunderJet Alexis Classic - 21 ft. 2008 is rated to a maximum of 500 hp, giving it the larger power ceiling. The ThunderJet Luxor OB OS 2011 tops out at 225 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 ThunderJet Alexis Classic - 21 ft. 2008 is Coast Guard rated for 8 passengers, while the ThunderJet Luxor OB OS 2011 is certified for 6. 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.

Do these boats require an oversize trailer permit to tow on US highways?

Both the ThunderJet Alexis Classic - 21 ft. 2008 and ThunderJet Luxor OB OS 2011 share an 96 in. beam - meaning both sit right at the 8’6" threshold that most US states use for standard-width loads. In most states you can tow at that width without a special permit, but regulations vary. Always check the rules for your state and any states you'll be passing through before your first long haul.

Which boat has the larger fuel tank - the ThunderJet Alexis Classic - 21 ft. 2008 or the ThunderJet Luxor OB OS 2011?

The ThunderJet Alexis Classic - 21 ft. 2008 has the bigger tank at 80 gallons, versus 48 gallons on the ThunderJet Luxor OB OS 2011. That 32-gallon difference translates to roughly 96–160 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Are the ThunderJet Alexis Classic - 21 ft. 2008 and ThunderJet Luxor OB OS 2011 from the same manufacturer?

Yes - both the ThunderJet Alexis Classic - 21 ft. 2008 and the ThunderJet Luxor OB OS 2011 are built by ThunderJet. 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.

← ThunderJet Alexis Classic - 21 ft. 2008 full specs ← ThunderJet Luxor OB OS 2011 full specs