Allison XB-21 ProSport Bass 2010 boat specs
Allison
Allison XB-21 ProSport Bass 2010
2010
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VS
Allison XB-21 ProSport S.U.B. 2012 boat specs
Allison
Allison XB-21 ProSport S.U.B. 2012
2012
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Allison XB-21 ProSport Bass 2010 vs Allison XB-21 ProSport S.U.B. 2012 — A Close Look at Two Modified Vees

When two boats share the same hull type — in this case both the Allison XB-21 ProSport Bass 2010 and the Allison XB-21 ProSport S.U.B. 2012 are modified vee designs with composite construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?

The Allison XB-21 ProSport S.U.B. 2012 tops out at 510 hp. Engine specs for the Allison XB-21 ProSport Bass 2010 aren't listed — confirm with a dealer before selecting an outboard.Both carry nearly identical fuel loads — 36 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.

Bottom line: The Allison XB-21 ProSport Bass 2010 and Allison XB-21 ProSport S.U.B. 2012 are closely matched on the specs that matter most. Test-ride both on the water you actually use, check current dealer pricing, and factor in long-term service access before you sign.
General Boat Info
MakeAllison
MakeAllison
ModelXB-21 ProSport Bass
ModelXB-21 ProSport S.U.B
Model Year201
Model Year2012
Measurements / Dimensions
Length - Feet21
Length - Feet21.17
Beamnot available
Beam93 in
Beam - Metersnot available
Beam - Meters2.36
Beam - Inchesnot available
Beam - Inches93
Weight - Detailnot available
Weight - Detail1,250-1,300 lbs
Weight - kgnot available
Weight - kg589.67
Weight - lbs.not available
Weight - lbs.13
Length overall - Detailnot available
Length overall - Detail21 ft. 2 in
Length overall - Metersnot available
Length overall - Meters6.45
Length overall - Inchesnot available
Length overall - Inches254
Body / Hull
Hull materialComposite
Hull materialComposite
Hull typeModified Vee
Hull typeModified Vee
Engine and Drivetrain
Fuel tank capacity - Detail36+ gal
Fuel tank capacity - Detail36 gal
Fuel tank capacity - Liters136.27
Fuel tank capacity - Liters136.27
Fuel tank capacity - Gal36
Fuel tank capacity - Gal36
Fuel typeGas
Fuel typeGas
Drive typeOutboard
Drive typeOutboard
Horsepowernot available
Horsepower135-200 hp
Engine maxnot available
Engine maxMax Engine Weight: 510 lbs
Operational Info
Maximum people5
Maximum people5
Trailer Info
Trailer - DetailAllison deluxe tube frame
Trailer - Detailnot available

Allison XB-21 ProSport Bass 2010 vs Allison XB-21 ProSport S.U.B. 2012 — Common Questions

Which is the larger boat — the Allison XB-21 ProSport Bass 2010 or the Allison XB-21 ProSport S.U.B. 2012?
The Allison XB-21 ProSport S.U.B. 2012 is the longer of the two at 21,2 feet overall. The Allison XB-21 ProSport Bass 2010 comes in at 21,0 feet, making it roughly 0,2 ft shorter — a meaningful difference in deck room and overall on-water presence.
What is the maximum horsepower rating for these boats?
The Allison XB-21 ProSport S.U.B. 2012 has a documented max rating of 510 hp. Engine specifications for the Allison XB-21 ProSport Bass 2010 were not available in our database — check the OEM spec sheet or manufacturer's website for confirmation.
How many people can each boat hold?
The Allison XB-21 ProSport Bass 2010 is Coast Guard rated for 5 passengers, while the Allison XB-21 ProSport S.U.B. 2012 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.
How do the fuel tanks compare on the Allison XB-21 ProSport Bass 2010 and Allison XB-21 ProSport S.U.B. 2012?
Both boats carry similar fuel loads — 36 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 Allison XB-21 ProSport Bass 2010 and Allison XB-21 ProSport S.U.B. 2012 from the same manufacturer?
Yes — both the Allison XB-21 ProSport Bass 2010 and the Allison XB-21 ProSport S.U.B. 2012 are built by Allison. 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.