New 2026 Newmar Supreme Aire 4129 Motor Home Super C - Diesel
Newmar Supreme Aire Super C diesel motorhome 4129 highlights:
- Hide-A-Bed Sofa
- Retracting King Bed
- Whirlpool Refrigerator
- Stainless Steel Microwave
- Bose Sound System
This sure is a supreme floorplan is all about giving you a real “home” layout inside a Super C coach. Up front, the living area feels like a true lounge, with seating arranged around the TV on power lift, so you can drop it down for movie night and tuck it away when you just want open windows and conversation. Mid-coach, the galley is set up for real cooking, not just snacking, with handy pantry storage for full-trip groceries and a solid work triangle between the appliances and counter space. Across from the kitchen, the booth dinette gives you a comfortable spot for meals, laptops, or board games, and it can pull double duty as extra sleeping space when you need it. In back, the bedroom centers on a retracting king bed that opens up the room when you’re getting dressed or moving around, then extends for a full, roomy sleep surface at night. Altogether, it is a very livable layout that works as well on a long haul as it does parked for an extended stay.
The Newmar Supreme Aire Super C diesel motorhomes continue to raise the bar with even more luxury and innovation you will not find on most other Super C coaches. Built on the Freightliner Cascadia chassis with serious diesel power and heavy-duty towing capability, they are made for confident travel whether your destination is the coast, the mountains, or anywhere in between. Inside, the Supreme Aire feels more like a high-end residence than a motorhome, with refined cabinetry, premium seating options, and a thoughtfully designed living area that can be tailored to how you relax. A sky window above the cockpit brings in natural light when you want it, and the power shade lets you dial it back for movie nights or mid-day naps. Up front, air-ride captain’s chairs, a modern digital dash, and the Xite infotainment system work together to make every mile feel smooth, quiet, and under control.
Everyone at RV Leaders & Camping Outlet was awesome! Great buying experience. If anyone is looking to buy a cool camper and wants a smooth buying process, this is the place to go! - Ryan
Stock# SP4129
Chassis: Freightliner Cascadia 116
Exterior Color: Blanco, Harding, Laughton, Portage, Seldovia
Interior Color: Brighton, Saguaro, Palisades
| Sleeps | 5 |
| Slides | 4 |
| Length | 41 ft 11 in |
| Ext Width | 8 ft 6 in |
| Ext Height | 13 ft 2 in |
| Int Height | 6 ft 11 in |
| Interior Color | Brighton, Saguaro, Palisades |
| Exterior Color | Blanco, Harding, Laughton, Portage, Seldovia |
| GVWR | 41000 lbs |
| Dry Weight | 37000 lbs |
| Fresh Water Capacity | 150 gals |
| Grey Water Capacity | 85 gals |
| Black Water Capacity | 52 gals |
| Furnace BTU | 50000 btu |
| Generator | 8.0 kW Cummins Onan |
| Fuel Type | Diesel |
| Engine | Cummins DD13 |
| Chassis | Freightliner Cascadia 116 |
| Horsepower | 525 hp |
| Fuel Capacity | 120 gals |
| Wheelbase | 349 in |
| Available Beds | King |
| Torque | 1850 ft-lb |
| Refrigerator Type | Whirlpool |
| Refrigerator Size | 19.7 cu ft |
| Convection Cooking | Yes |
| Cooktop Burners | 2 |
| Shower Size | 40" x 30" |
| Axle Weight Front | 18000 lbs |
| Axle Weight Rear | 23000 lbs |
| Water Heater Type | Demand |
| AC BTU | 30000 btu |
| TV Info | LR 50" 4K LED TV on Lift, BR Samsung LED TV, EXT 43" Samsung® 4K LED TV |
| Awning Info | Girard® G2000 Power Side Awning with Wind Sensor |
| Washer/Dryer Available | Yes |
| Gross Combined Weight | 61000 lbs |
| Shower Type | Standard |
| Electrical Service | 50 amp |
| Solar Wattage | 10 watts |
Supreme Aire 4129 Reviews
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Manufacturer and/or stock photographs may be used and may not be representative of the particular unit being viewed. Where an image has a stock image indicator, please confirm specific unit details with your dealer representative.


