2026 Newmar Supreme Aire 43' 4341 Stock #:8451
IN-STOCK!IWS Signature Series™
- IWS Price
- $869,789Contact us for best pricing!
Ben’s Take
A little about this Supreme Aire XT 4341:
It’s the moment we have all been waiting for. The 2026 Newmar Supreme Aire XT is now built on the Freightliner P4 Cascadia chassis! After years of waiting, it’s finally here, and we couldn’t be more excited!
We are proud to present the Supreme Aire XT as an IWS Signature Series™ build. When you see the IWS Signature Series™ label, you know that it’s the best of the best. Built on the Freightliner P4 Cascadia 126 chassis, mated with the Detroit Diesel DD16 Engine with 600hp and 1,850 ft lb. of torque. We ordered this one with the Detroit DT12 12 Speed Automated Manual Transmission which is our favorite transmission for towing performance. Speaking of towing, this coach features a 30,000 lb. towing capacity with tandem rear axles leading the way. This is a beast of a powertrain that can handle anything you throw at it. It also has the Detroit Safety Assurance collision mitigation system, that features lane departure warning, blind spot monitoring, adaptive cruise control, and adaptive brake assistance.
This coach sits at a desirable, 43’ in total length, and features the 4341 bath and a half floorplan. Newmar has always set the bar by thinking differently and out innovating the competition. We love that you can fit, a stacked washer and dryer, a true king bed, two bathrooms, a large living area, a pantry, and a nice kitchen.
Being an IWS Signature Series™ build, we picked over $105,000 in options on this one. Some of these options we ordered are through the Newmar Specials program, which you can’t get on the standard option sheet. A few of the major options include:
It’s the moment we have all been waiting for. The 2026 Newmar Supreme Aire XT is now built on the Freightliner P4 Cascadia chassis! After years of waiting, it’s finally here, and we couldn’t be more excited!
We are proud to present the Supreme Aire XT as an IWS Signature Series™ build. When you see the IWS Signature Series™ label, you know that it’s the best of the best. Built on the Freightliner P4 Cascadia 126 chassis, mated with the Detroit Diesel DD16 Engine with 600hp and 1,850 ft lb. of torque. We ordered this one with the Detroit DT12 12 Speed Automated Manual Transmission which is our favorite transmission for towing performance. Speaking of towing, this coach features a 30,000 lb. towing capacity with tandem rear axles leading the way. This is a beast of a powertrain that can handle anything you throw at it. It also has the Detroit Safety Assurance collision mitigation system, that features lane departure warning, blind spot monitoring, adaptive cruise control, and adaptive brake assistance.
This coach sits at a desirable, 43’ in total length, and features the 4341 bath and a half floorplan. Newmar has always set the bar by thinking differently and out innovating the competition. We love that you can fit, a stacked washer and dryer, a true king bed, two bathrooms, a large living area, a pantry, and a nice kitchen.
Being an IWS Signature Series™ build, we picked over $105,000 in options on this one. Some of these options we ordered are through the Newmar Specials program, which you can’t get on the standard option sheet. A few of the major options include:
- All Gray Single Color Paint Design with Onyx Blackout Package– We designed this coach to come in an all-gray paint design with the Onyx Blackout Package. We love customizing, and so do our customers. The blackout package covers the wheels, grill, door handles, mirror covers, and more. This coach is going to look bad ass! ($18,000 in customizations)
- Theater Seating and Euro Booth Dinette in lieu of Sleeper Sofa and Dinette – A personal favorite combination of ours. We designed this floorplan for couples that are looking for the most luxurious, comfortable floorplan on the market. The theater seats are the most comfortable seats for the Supreme Aire, and we love the Euro Booth versatility where if you do have 4 people over for dinner one night, its easy to convert to 4 seats. ($5,400 in options)
- Sleep Number King Bed – The most comfortable bed option we offer in the Super C lineup. This sleep number bed allows each person to set their own firmness on their side of the mattress. ($2,100 option)
- Electric Radiant Floor Heat – This is an absolute must have option. Nothing better than waking up in the morning with warm tile. Also helps in winter use for 4-season traveling. ($10,000 option)
- Lithium Battery Upgrade Package – This gives you 940-amp hours of lithium batteries, and (2) 3,000-watt inverters over the standard 6-volt batteries, and single inverter. We wouldn’t order a Supreme Aire without this package! ($30,000 option)
- IWS Signature Series™ Solar Panel Package (3) 220 Watt Panels – We know that if you are interested in a Super C you are also interested in boondocking! We install our own Solar Panel System giving you 660 Watts of solar in conjunction with the Lithium. We install (3) 220 Watt Panels that are hard panels compared to the stick-on panels that don’t perform nearly as well! ($4,000 option)
- Two-Tone Hardwood Cabinets – For 2026 Newmar is offering a two-tone cabinet design, and we couldn’t say no as its one of the best-looking cabinet designs we have seen in a Super C! This coach has the Summit / Chestnut Glazed Maple Design with Suede Finish. ($1,800 option)
- Starlink Internet – Satellite Internet with the high-performance wedge mount. Comes built in with a router. Our preferred choice for internet on any motorcoach. ($5,593 option)
You can put your name on it with a $5,000 deposit. Give us a call, and we can tell you even more about it, and the process of making it your coach. See you out on the road!
Written by Ben Ceccarelli
Written by Ben Ceccarelli
Standard Chassis Features
IWS Signature Series™ Freightliner Cascadia P4-126 (Tandem Rear Axle)
- 600hp DD16 Detroit Diesel Engine 1,850 ft. lb. Torque
- Detroit DT12 12 Speed Detroit Automated Manual Transmission
- GVWR 58,000lb / GCWR 80,000lb
- Includes the Detroit Safety Assurance Collision Mitigation System
- Full Double Steel Frame Construction (7/16" Thick Steel)
- 1400 sq Inch Aluminum Radiator for Heavy Duty Applications
- 300 AMP Brushless Pad Mount Alternator for House Battery Charging while Driving
- Bendix Air Disc Front and Rear Brakes
- Michelin X Line Energy Z 315/80R22.5 20 Ply Radial Front Tires
- Michelin X Line Energy Z 295/80R22.5 16 Ply Radial Rear Tires
- Driver Controlled Locking Differential
- LED Headlights
- Anti Lock Braking System
- Chassis Battery Disconnect
- Electronic Stability Control
- Air Horns
- Engine Block Heater
- Power and Heated Remote Control Mirrors
- Power Window and Power Door Locks
- Electronic Cruise Control
- 18" Leather Wrapped Steering Wheel with Tilt & Telescoping Features
- Tire Pressure Monitor
- 5 Year/100,000 mile Chassis Warranty
- 5 Year/100,000 mile Engine Warranty
- 5 Year/Unlimited miles Transmission Warranty
- Note - "Chassis Specs Are Subject to Change Without Notice"
