2026 Dynamax Corp DynaQuest XL 3700RB

NewClass C|630 mi|Stock #4785|Located at McKee RV in Perry, IA
$368,559$511,887
Save $143,328

Dynamax DynaQuest XL Super C diesel motorhome 3700RB highlights:

  • Freightliner M2 112 **Plus **Chassis

  • Cummins L9 - 450Hp / **1,250 **lb-ft of Torque

  • 20,000 Lbs Towing

  • Cab-Over Bed

  • Blackout Package

  • 64" Theater Seats

  • Stacker Washer / Dryer Prep

  • Exterior Entertainment

  • Residential Refrigerator

  • **Xplorer Package: **Lithium Ion Batteries (540Ah) - Solar (1,000 Watts) - Enhanced Insulation (Heated Bays, Thermal Foil Insulation, Dual Pane Windows, Insulated Cab Curtains.

It's a clean decision with a bath and a half to take this motorhome on your next trip! The full rear bathroom has a radius shower to freshen up in, a closet to keep your towels close, and a** dual sink vanity** for two to get ready at once. It also creates a master suite with a king bed slide across from a dresser with a 32" TV and wardrobes on either side of it. Across from the half bathroom is a closet that is prepped to add an optional washer and dryer for clean clothes throughout your entire trip. You will have everything you need to prepare your best meals including a countertop extension. Enjoy your meals, play card games, and even transform into a sleeping space all with the Dream Dinette. The tri-fold sofa sleeper not only has seatbelts for traveling, but also can transform into a sleeping space too. You can also choose to add the optional bunk over cab for more sleeping space or switch out the sofa for the optional theaters seats!

You will have the perfect combination of brute force and refined living with each one of these Dynamax DynaQuest XL Super C diesel motorhomes! A Freightliner M2 112 chassis holds these units together, a Cummins L9 turbo diesel engine with 450 HP powers them, and twin 50 gallon aluminum fuel tanks help them go farther. An Equiflo inboard fuel system creates dual supply and dual return, and the diesel Aqua Hot 450D system provides continuous hot water, as well as preheats the engine. The seamless, easy-clean rotocast storage compartments have LED lighting for you to see at night and remote locking doors. A few other features you will appreciate include a water filtration system, multiplex wiring with a touch screen command center with Bluetooth phone app control, and an exterior shower in the service bay to keep the dirt outside where it belongs. Come see all of the many luxurious features that will make every one of your trips comfortable and fun!

Specifications

Length

41 ft 3 in

Sleeps

6 people

Slideouts

3

Odometer

630 miles

Unit features & options

  • Freightliner M2 112 PLUS Chassis (33,000-lbs. GVWR / 54,000-lbs. GCWR)
  • Cummins L9 Turbo Diesel Engine (450hp / 1,250 lb-ft. of Torque)
  • Allison 3200 TRV Six-Speed Automatic Transmission
  • 4.78 Rear Axle Ratio
  • Trailer Hitch (20,000 Tow lbs. / 2,000 Tongue lbs.) with 7-Way Round Tow Connection
  • 100-Gallon Fuel Capacity (Twin 50-Gallon Aluminum Fuel Tanks) with Equiflo Inboard Fuel System
  • 6-Gallon Diesel Exhaust Fluid Tank
  • 275-amp Alternator
  • Air Brakes with 4-Wheel ABS
  • Fuel Filter/Water Separator with Primer Pump
  • C-Brake by Jacobs with High/Low Settings
  • Brake Controller
  • Airliner 21,000-lb. Rear Air Suspension
  • Manual Air Suspension Dump Valve Switch on the Dash
  • Rear Locking Differential
  • Active Brake Assist
  • Front Collision Warning
  • Lane Departure Warning
  • Cruise Control
  • Steel-Reinforced, Aluminum Cab
  • Chrome Grille
  • LED Headlights
  • Fog Lights
  • Daytime Running Lights

Full specifications

AC BTU30000 btu
Available BedsKing
Awning Info29'11" Power Armless w/LED Lighting and Wind Sensors
Axle Weight Front12000 lbs
Axle Weight Rear21000 lbs
Black Water Capacity52 gals
ChassisFreightliner M2 112
Convection CookingYes
Cooktop Burners2
Electrical Service50 amp
EngineCummins L9 - 8.9L
Ext Height12 ft 9 in
Ext Width8 ft 5 in
Exterior ColorXPLORER LIGHT
Fresh Water Capacity100 gals
Fuel Capacity100 gals
Fuel TypeDiesel
GVWR33000 lbs
Grey Water Capacity52 gals
Gross Combined Weight54000 lbs
Hitch Weight20000 lbs
Horsepower450 hp
Int Height7 ft
Interior ColorMINDFUL GRAY WOOD - MILANO DECOR
Length41 ft 3 in
Mileage630 mi
Miles630
Number Of Bunks1
Number of Awnings2 ft
Refrigerator Size24 cu ft
Refrigerator TypeResidential w/Ice Maker
Shower TypeRadius
Sleeps6
Slides3
TV InfoLR 39" LED Smart TV, BR LED Smart TV, Ext. 32" TV
Tire Size275/80R22.5
Torque1250 ft-lb
Washer/Dryer AvailableYes
Water Heater TypeAqua Hot On Demand
Wheelbase286 in

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2026 DynaQuest XL 3700RB

2026 DynaQuest XL 3700RB
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