MOUNTAIN AIRE CONSTRUCTION
Like a fine home, the 2025 Mountain Aire is framed 16 inches on center and is covered by a fiberglass roof with an integrated gutter rail. Click or tap for more details.
Chassis: Spartan® K3 Tag Axle Chassis
The 2025 Mountain Aire is supported by our STAR Foundation, which improves strength and durability while providing a quieter and more stable ride than any other Class A coach. A Spartan® K3 Tag Axle chassis, 525-horsepower Cummins® diesel engine and Comfort Drive™ adaptive steering with Passive Steer technology come standard.
What’s more, each Mountain Aire is fitted with a cargo liner, 5/8” floor decking, 5/8” bead foam, and galvanized sheeting to prevent distortion. Lengths, heights, widths, and dry weights are approximate. Weight will vary based on optional equipment added to the base weights listed below. Specifications are supplied by each chassis manufacturer.
Like a fine home, the 2025 Mountain Aire is framed 16 inches on center and is covered by a fiberglass roof with an integrated gutter rail. Click or tap for more details.
Chassis: Spartan® K3 Tag Axle Chassis
| Floor Plan | Length | Width | Height | Int. Width | Int. Height | Grey | Sewage | Water | Propane | Furnace | Water Heater | # of House Batteries (Standard) | Total House Battery Amp Hours (Standard) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3823 | 38FT 10IN | 101.5 | 13FT 2IN | 95.5 | 83 | 80 | 60 | 105 | 0 | 50000 | 0 | 6 | 600 |
| 3825 | 38FT 10IN | 101.5 | 13FT 2IN | 95.5 | 83 | 80 | 60 | 105 | 0 | 50000 | 0 | 6 | 600 |
| 4118 | 41FT 10IN | 101.5 | 13FT 2IN | 95.5 | 83 | 80 | 60 | 105 | 0 | 50000 | 0 | 6 | 600 |
| 4551 | 44FT 10IN | 101.5 | 13FT 2IN | 95.5 | 83 | 80 | 60 | 105 | 0 | 50000 | 0 | 6 | 600 |
| 4595 | 44FT 10IN | 101.5 | 13FT 2IN | 95.5 | 83 | 80 | 60 | 105 | 0 | 50000 | 0 | 6 | 600 |
| Floor Plan | Year | Brand | Type | Floor Plan | Engine Brand | Engine Model | Engine HP | Engine Torque Rating | Engine Displ. | Engine Displ. UOM | Axle Ratio | Xmission Brand | Xmission Model | Xmission Speeds | Fuel Cap. | DEF Tank Cap. | Wheel Base | Tire Brand | Rear Hitch Rating Flat | Rear Hitch Rating Trailer | Rear Hitch Rating Vertical | Wheel Cut Angle Front | Wheel Cut Angle Tag Axle | Front GAWR | Rear GAWR | Tag GAWR | GVWR | GCWR | APP. UVW | APP. NCC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3823 | 2025 | MA | DP | 3823 | Cummins | X | 525 | 1695 | 11.9 | Liters | 4.3 | Allison | 4000MH | 6 | 150 | 15 | 246+ TA | Michelin | 15000 | 15000 | 1500 | 55 | 8 | 20000 | 20000 | 14000 | 54000 | 69000 | 41000 | 13000 |
| 3825 | 2025 | MA | DP | 3825 | Cummins | X | 525 | 1695 | 11.9 | Liters | 4.3 | Allison | 4000MH | 6 | 150 | 15 | 246+TA | Michelin | 15000 | 15000 | 1500 | 55 | 8 | 20000 | 20000 | 14000 | 54000 | 69000 | 41000 | 13000 |
| 4118 | 2025 | MA | DP | 4118 | Cummins | X | 525 | 1695 | 11.9 | Liters | 4.3 | Allison | 4000MH | 6 | 150 | 15 | 282+TA | Michelin | 15000 | 15000 | 1500 | 55 | 8 | 20000 | 20000 | 14000 | 54000 | 69000 | 42500 | 11500 |
| 4551 | 2025 | MA | DP | 4551 | Cummins | X | 525 | 1695 | 11.9 | Liters | 4.3 | Allison | 4000MH | 6 | 150 | 15 | 318+TA | Michelin | 15000 | 15000 | 1500 | 55 | 8 | 20000 | 20000 | 14000 | 54000 | 69000 | 44200 | 9800 |
| 4595 | 2025 | MA | DP | 4595 | Cummins | X | 525 | 1695 | 11.9 | Liters | 4.3 | Allison | 4000MH | 6 | 150 | 15 | 318+TA | Michelin | 15000 | 15000 | 1500 | 55 | 8 | 20000 | 20000 | 14000 | 54000 | 69000 | 44200 | 9800 |
