I shopped for 4 years and decided on Motor Home Specialist because of their great internet pricing. This was a great overall purchasing experience & I will recommend MHSRV to my friends & family.
Dynamax DynaQuest XL
Motor Home SpecialistThe #1 Volume Selling Motor Home Dealer in the World!*
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Dynamax DynaQuest XL RVs For Sale
Dynamax Dynaquest XL Super C diesel motorhomes for sale at Motor Home Specialist, the #1 Volume Selling Motor Home Dealer in the World, and a full-line Dynamax RV Dealer. The Dynaquest XL is a Super C diesel motorhome on the commercial-grade Freightliner M2 112 PLUS chassis. Power comes from the Cummins L9 turbo diesel at 450 horsepower and 1,250 lb-ft of torque. Shopping for a new or used Dynaquest XL? MHSRV stocks one of the largest selections of Dynamax Dynaquest XL motorhomes for sale anywhere in the country, all backed by industry-leading discount pricing.
The Dynaquest XL fills a specific slot that doesn't get filled often. It's a Super C with real commercial chassis credentials, Class A diesel pusher-level amenities, and a truck-cab driving experience. Many Dynaquest XL buyers are downsizing from a 40-foot Class A diesel pusher. They want easier service-network access, a smaller footprint for state and national park entrances, and a more familiar cockpit, without giving up the Cummins L9 powertrain, the Aqua-Hot hydronic system, the residential refrigerator, or the King bed.
Chassis, Powertrain, and Towing
Every Dynaquest XL rides on the Freightliner M2 112 PLUS chassis. That's the same medium-duty commercial truck chassis used in commercial freight, bucket trucks, and emergency vehicles, built to commercial driver comfort and safety expectations. GVWR is 33,000 pounds and GCWR is 54,000 pounds. Power comes from the Cummins L9 turbo diesel at 450 horsepower and 1,250 lb-ft of torque, paired with the Allison 3200 TRV six-speed automatic transmission. This is the same Cummins L9 powertrain used in flagship Class A diesel pushers like the Tiffin Phaeton and Allegro Bus. Standard chassis equipment adds the Airliner 21,000-pound rear air suspension with a manual dump valve on the dash, full air brakes with 4-wheel ABS, the C-Brake by Jacobs engine brake with high/low settings, a rear locking differential, a 275-amp alternator, twin 50-gallon aluminum fuel tanks (100 gallons total) with the Equiflo inboard fuel system, a 6-gallon DEF tank, a 4.78 rear axle ratio, and Alcoa polished aluminum wheels (single front, dual rear) on 275/80R22.5 14-ply radial tires.
Towing steps up hard from the 10,000-pound hitch you find on a typical Class C. Every Dynaquest XL has a 20,000-pound trailer hitch with a 2,000-pound tongue capacity and a 7-way round connection. Combined with the 54,000-pound GCWR, that's enough to pull a fully-loaded enclosed car hauler with a substantial vehicle inside, a tandem-axle equipment trailer, a large boat, or a multi-vehicle setup.
Cockpit, Safety, and Driver Tech
Standard safety features include Active Brake Assist, Front Collision Warning, Lane Departure Warning, cruise control, dual chrome roof-mounted air horns, and tire pressure monitoring. The Sony 10.1-inch HD touchscreen supports AM/FM, Bluetooth, SiriusXM (with tuner and antenna), wired and wireless Apple CarPlay and Android Auto, USB-C, and high-resolution audio. It's paired with the JBL premium cab sound system tuned specifically for the Freightliner M2 (full-range and tweeter coaxial speakers, dual voice coil subwoofer, and a 4-channel DSP amplifier). Visibility runs the Quad-View camera system (right, left, hitch, and rear horizon views), power-heated exterior mirrors, and an adjustable steering column with an 18-inch leather-wrapped steering wheel. Cab seating is leatherette air-ride driver and passenger chairs with air lumbar controls.
Coach Construction
The coach uses 2-inch aluminum-framed laminated sidewalls with high-density block foam insulation, composite exterior fiberglass with no exterior wood, an aluminum-framed floor and aluminum-framed roof trusses, a crowned one-piece fiberglass roof, foil-lined ductwork, fiberglass rear cap and front wing panels, and dual-pane dark-tinted frameless square windows with built-in night shades and screens as standard. Automatic four-point hydraulic leveling jacks are standard.
Kitchen, Interior, and Living
The galley runs residential-grade appliances: a 24-cubic-foot residential refrigerator with ice maker on the 3400KD, 3700BD, 3700RB, and 3801TS, or a 16-cubic-foot residential refrigerator with a side pantry on the 3200KD. Add an induction range, a convection microwave with air fryer functionality, solid-surface countertops with LED edge lighting and a solid-surface backsplash, a stainless steel sink with solid-surface covers, a residential stainless steel gooseneck faucet, a pantry, overhead accent lighting, under-cabinet lighting, and a MaxxAir power vent with rain cover. Interior finish runs luxury vinyl tile flooring with a coordinated entry surround, a soft-touch padded vinyl ceiling, dimmable LED recessed ceiling lights, hardwood raised-panel cabinetry with five-piece drawer fronts and dovetail joints, hardwood Shaker-style passage doors with hidden hinges and soft-close full-extension drawer guides, magnetic thermal reflective front privacy shades, and USB and USB-C charging throughout. The Bose sound system is standard.
Master Bedroom and Bath
The master bedroom carries a 71-by-78-inch King bed with a gel-infused memory foam mattress, a deluxe padded headboard, a designer bedding package, a cedar-lined wardrobe with a digital safe, nightstands with solid-surface countertops, LED reading lights, and USB/USB-C charging. Every floor plan except the 3200KD adds a 32-inch LED Smart TV with a Bose sound bar. The master bath uses a 36-by-30-inch solid-surface shower with a teak fold-down seat, glass shower door, shower skylight, and Oxygenics Body Spa shower head, plus a solid-surface countertop with LED edge lighting and an under-mount sink with a residential brushed nickel faucet. Floor-plan-specific: the 3700RB steps up to a full rear bath with two sinks. The 3700BD and 3801TS use a porcelain foot-flush toilet; the other plans use a porcelain electronic-flush macerator toilet.
Aqua-Hot, Electrical, and Off-Grid Power
Every Dynaquest XL comes standard with the Aqua-Hot 450D diesel hydronic heating system with engine pre-heat. Aqua-Hot provides both heated air and domestic hot water from one diesel-fueled unit. It pulls from the same 100-gallon fuel supply as the engine and the generator. Climate adds dual ducted low-profile 15,000-BTU air conditioners with heat pumps. Electrical runs two 12V Group 8D AGM deep-cycle maintenance-free batteries (490aH total), a 3,000-watt hybrid pure sine wave inverter/charger, an 8kW Onan diesel generator on isolator pads with auto transfer switch and automatic generator start, a 200-watt glass solar panel with a 30-amp controller, 50-amp service with a 36-foot power cord reel, an Energy Management System, and Firefly multiplex wiring with a touchscreen command center, switch panels, and Bluetooth smartphone app control.
Connectivity: Starlink and Satellite
Recent production Dynaquest XL units come with a roof-mounted Starlink satellite internet system as standard equipment, no aftermarket installation required. Earlier builds were Starlink-prepped without the antenna installed. Traditional satellite TV also evolved. Earlier builds carried a KING DISH Tailgater Pro premium HD satellite with DISH Network receiver. Recent production units come with a Winegard in-motion satellite. A Winegard over-the-air HDTV antenna is also standard. Cable TV/satellite hookup lives in the service bay, and a 4x4 HDMI matrix routes video sources between multiple TVs.
Exterior, Paint, and Front Cap
Standard exterior finish runs custom full-body paint with scheme-matching cab door jambs and slideout sides, a premium cut-and-buffed paint finish, front-end Diamond Shield paint protection, dual roof-mounted integrated armless patio awnings with LED lighting and wind sensors (a single awning on the 3200KD), aluminum-wrapped slideout toppers, an LED patio light, an entry door with rotary latch and dark-tinted frameless window with integrated shade, keyless entry touch pad, remote locking for exterior storage doors and the entry door, a lighted acrylic entry grab handle, power entry steps with upgraded SeaDek treads, polished stainless steel step accents, dual chrome roof-mounted air horns, and a chrome exhaust tip. The exterior wall-mounted entertainment center adds a 40-inch LED Smart TV with an integrated JBL sound bar on a swivel extension mount. Two front cap configurations are available: an aerodynamic fiberglass front cap with cab-over cabinets, or an extended fiberglass front cap with a 50-by-79-inch cab-over bunk mattress and privacy curtain.
The Five Dynaquest XL Floor Plans
All five plans share the Freightliner M2 112 PLUS chassis, the Cummins L9 powertrain, the 33,000-pound GVWR, the 100-gallon fuel capacity, and the 20,000-pound trailer hitch.
3200KD (34 feet 4 inches): The most compact and maneuverable plan. Dual power reclining theater seats replace the sofa, a 16-cubic-foot residential refrigerator with a side pantry replaces the 24-cubic-foot residential fridge, and a single roof-mounted awning replaces the dual awning setup. Includes a 1.55-cubic-foot Truma portable cooler in the exterior storage bay.
3400KD (37 feet 2 inches): The mid-size plan. Dual awnings, the 24-cubic-foot residential refrigerator, a standard tri-fold sofa with optional theater seating, and a larger 2.43-cubic-foot Truma portable cooler.
3700BD (39 feet 8 inches): The family-flagship bunk plan. Twin 28-by-76-inch bunk mattresses, a privacy partition between the bunks and the master bedroom, and two bunk CD/DVD players with monitors so each child has an entertainment setup. Rare configuration in the Super C segment.
3700RB (41 feet 3 inches): The rear-bath flagship. Full rear bath with dual under-mount sinks and the most generous master bath layout in the lineup.
3801TS (39 feet 8 inches): The entertainment-flagship plan. A pop-up 50-inch LED Smart TV and electric fireplace combination replaces the typical living-area TV, for buyers who prioritize a focal-point living room feature.
Xplorer, Black Out, and Available Packages
The Xplorer Package is the boondocking upgrade. It adds an insulated cab curtain, lithium house batteries in place of the standard AGM setup, a 1,000-watt solar package in place of the standard 200-watt panel, an insulated utility bay, and access to the exclusive Xplorer paint schemes (Dark, Light, or Midnight). Recent Xplorer builds include three lithium house batteries totaling 720 amp-hours, a meaningful cold-weather off-grid bump over earlier two-battery configurations.
The Black Out Package swaps the chrome and stainless accents for blacked-out finishes on the cab entry steps, side mirrors, rock guard, wheels, headlight bezels, exterior grab handle trim, storage door handles, custom grill and vent, and black stainless lower skirt and rear tail light accents. For buyers who prefer a more aggressive aesthetic.
Pricing
MSRP on the Dynaquest XL varies by floor plan and equipment. Final pricing depends on the Xplorer Package, the Black Out Package, front cap configuration (aerodynamic with cab-over cabinets, or extended with cab-over bunk), washer/dryer selection, theater seating selection, and other options. Motor Home Specialist offers industry-leading discount pricing on every new Dynaquest XL for sale, well below MSRP. Contact MHSRV for current pricing on in-stock units.
Cross-shopping the Dynaquest XL? Within Dynamax at MHSRV, look at the Isata 6 (the smaller Super C in the lineup). Step down further to the Ram-5500-based Isata 5 or the Isata 3. Broader Super C cross-shops usually include the Thor Magnitude Grand, Thor Inception, Newmar Super Star, Renegade Verona, and Tiffin Allegro Bay. All are available at MHSRV. Cross-shopping Super C vs. Class A diesel pusher is a common Dynaquest XL decision point. MHSRV also stocks mid-tier Class A diesel pushers including the Tiffin Phaeton and Allegro Red.
Dynamax Dynaquest XL FAQs
What is the Dynamax Dynaquest XL?
The Dynamax Dynaquest XL is a Super C diesel motorhome built by Dynamax (a Forest River Inc. company) on the commercial-grade Freightliner M2 112 PLUS chassis with the Cummins L9 turbo diesel engine producing 450HP and 1,250 lb-ft of torque. The Dynaquest XL is positioned for buyers who want Class A diesel pusher-level powertrain, ride quality, and amenities (Aqua-Hot hydronic heating, residential refrigerator, King bed, 20,000-pound trailer hitch) in a Super C footprint with a truck-cab driving experience. Many Dynaquest XL buyers are downsizing from a 40-foot Class A diesel pusher. They want easier maneuverability and service-network access without giving up the chassis credentials.
What chassis is the Dynaquest XL built on?
The Dynaquest XL is built on the Freightliner M2 112 PLUS chassis (33,000-pound GVWR, 54,000-pound GCWR). The Freightliner M2 112 PLUS is the same family of medium-duty commercial truck chassis used in commercial freight, bucket trucks, and emergency vehicles, built to commercial driver comfort and safety expectations. Standard chassis features include the Airliner 21,000-pound rear air suspension with manual dump valve, full air brakes with 4-wheel ABS, the C-Brake by Jacobs engine brake with high/low settings, a rear locking differential, a 275-amp alternator, twin 50-gallon aluminum fuel tanks with the Equiflo inboard fuel system, and a steel-reinforced aluminum cab. Active Brake Assist, Front Collision Warning, and Lane Departure Warning are all standard.
What engine comes on the Dynaquest XL?
Every Dynamax Dynaquest XL is powered by the Cummins L9 turbo diesel engine producing 450 horsepower and 1,250 lb-ft of torque, paired with the Allison 3200 TRV six-speed automatic transmission. This is the same Cummins L9 powertrain used in Class A diesel pusher flagships like the Tiffin Phaeton and Allegro Bus. The Dynaquest XL sits in commercial-grade diesel territory. That's a step above the Ford E-Series or Ram 5500 chassis typical of conventional Class C and adventure Class C products.
How much can the Dynaquest XL tow?
Every Dynaquest XL has a 20,000-pound trailer hitch with a 2,000-pound tongue capacity and a 7-way round connection, substantially higher than typical Class C and even most Super C towing. The 54,000-pound GCWR provides operational headroom at or near maximum tow ratings. This is enough capacity to pull a fully-loaded enclosed car hauler with a substantial vehicle inside, a tandem-axle equipment trailer, a large boat, or a multi-vehicle setup behind the coach.
What's the difference between a Super C and a Class C motorhome?
A Class C motorhome is built on a light-duty cutaway chassis (typically Ford E-Series gas, Mercedes Sprinter diesel, or Ram 3500/4500 diesel) with a manufacturer's truck cab attached to an RV body. A Super C motorhome is built on a medium-duty commercial truck chassis (typically Freightliner M2 or Ford F-550/F-600) with the same general cab-and-body configuration but substantially higher GVWR, GCWR, and towing capacity, plus a larger and more powerful diesel engine. The Dynaquest XL is a Super C on the Freightliner M2 112 PLUS chassis with the Cummins L9 450HP engine, a 33,000-pound GVWR, a 54,000-pound GCWR, and a 20,000-pound hitch capacity. The smaller Dynamax Isata 5 is a Class C diesel on the Ram 5500 chassis with the Cummins 6.7L 360HP engine, 19,500-pound GVWR, and 10,000-pound hitch.
What floor plans does the Dynaquest XL come in?
The Dynamax Dynaquest XL is offered in five floor plans: 3200KD (34 feet 4 inches overall length, the most compact and maneuverable plan with theater seating standard, single awning, and 16-cubic-foot refrigerator with side pantry), 3400KD (37 feet 2 inches, dual-awning mid-size plan with the 24-cubic-foot residential refrigerator and tri-fold sofa standard), 3700BD (39 feet 8 inches, the bunk-equipped family-flagship Super C plan with twin bunk mattresses, privacy partition, and dual bunk CD/DVD players), 3700RB (41 feet 3 inches, the rear-bath flagship with dual sinks in the full rear bath), and 3801TS (39 feet 8 inches, the entertainment-flagship plan with the pop-up 50-inch LED Smart TV and electric fireplace combination). All five share the same Freightliner M2 112 PLUS chassis, Cummins L9 powertrain, 33,000-pound GVWR, and 100-gallon fuel capacity.
Which Dynaquest XL floor plan is best for families with kids?
The Dynaquest XL 3700BD is the family-flagship plan and one of the genuinely rare bunk-equipped configurations in the Super C diesel segment. It features twin 28-by-76-inch bunk mattresses, a privacy partition separating the bunk area from the master bedroom, and two bunk CD/DVD players with monitors so each child has an entertainment setup. The other four Dynaquest XL plans don't include a dedicated bunk area, so the 3700BD is the natural family choice. The 3801TS, 3700RB, 3400KD, and 3200KD all work better for couples or small families with one child who can use a convertible sleeping arrangement.
Does the Dynaquest XL come Starlink-equipped?
Yes, on recent production units. Recent Dynaquest XL builds come with a roof-mounted Starlink satellite internet system as standard equipment, no aftermarket installation required. Earlier builds were Starlink-prepped without the antenna installed. The traditional satellite TV system also evolved. Earlier builds carried a KING DISH Tailgater Pro premium HD satellite with DISH Network receiver. Recent production units carry a Winegard in-motion satellite. Verify the exact Starlink and satellite configuration on any specific used Dynaquest XL with an MHSRV product expert.
What's the Xplorer Package?
The Xplorer Package is the Dynaquest XL's off-grid upgrade, aimed at buyers planning extended boondocking and shoulder-season travel. It includes an insulated cab curtain, lithium house batteries in place of the standard AGM setup, a 1,000-watt solar package in place of the standard 200-watt panel, an insulated utility bay, and access to the exclusive Xplorer paint schemes (Dark, Light, or Midnight). Recent Xplorer builds include three lithium house batteries totaling 720 amp-hours, a meaningful capacity bump over earlier two-battery configurations for cold-weather and shoulder-season off-grid use.
Does the Dynaquest XL come with a generator?
Yes. Every Dynaquest XL comes standard with an 8kW Onan diesel generator on isolator pads, with an auto transfer switch and automatic generator start. The generator pulls from the same 100-gallon twin aluminum fuel supply as the engine and the Aqua-Hot 450D system. That eliminates the need for a separate LP supply for primary generator operation and gives the Dynaquest XL long unattended off-grid runtime.
What's the Aqua-Hot 450D system?
The Aqua-Hot 450D diesel hydronic heating system is standard on every Dynaquest XL. It provides both heated air and heated domestic hot water from a single diesel-fueled unit. The 450D includes engine pre-heat for cold-weather starting. It's the same hydronic platform used in flagship Class A diesel pushers from Tiffin, Newmar, and Foretravel. Aqua-Hot uses the coach's main fuel supply, in place of the LP furnace and water heater common on lower-tier Class C and Super C products. That lowers operating cost and removes the LP-vs-electric decision common on mainstream RVs.
How much does a Dynaquest XL cost?
MSRP on the Dynaquest XL varies by floor plan and equipment. Final pricing depends on the Xplorer Package, the Black Out Package, front cap configuration (aerodynamic with cab-over cabinets, or extended with cab-over bunk), washer/dryer selection, theater seating selection, and other options. Pricing on used Dynaquest XL inventory varies by model year, mileage, condition, and which optional packages were originally specified. Motor Home Specialist offers industry-leading discount pricing on every new Dynaquest XL for sale, well below MSRP, so you save thousands compared to other Dynamax dealers. Contact MHSRV for current pricing on in-stock units.
Where can I buy a Dynamax Dynaquest XL?
Motor Home Specialist in Alvarado, Texas is the #1 volume-selling motor home dealer in the world, a full-line Dynamax RV dealer, and stocks one of the largest selections of new and used Dynamax Dynaquest XL Super C diesel motorhomes for sale anywhere in the country. MHSRV serves Dynaquest XL buyers nationwide and offers in-house financing, trade-ins, and full-service support after the sale. MHSRV also stocks the Isata 3, Isata 5, and Isata 6, plus the DX3 and Force lineups.
Manufacturer options, features, colors, etc. can all change without notice and MHSRV assumes no responsibility for the changes or possible errors in information provided by the manufacturer. All weights and measurements are approximate and not guaranteed to be 100% accurate. For the latest information be sure to check with your salesperson and/or the coach manufacturer and verify before purchase.
