2008 Dynamax Corp Grand Sport Ultra 450UL LOCATED IN SAN DIEGO CA. 91942 - 0078
For Sale in , FL.

Description

2008 Dynamax Grand Sport Ultra 450UL
Pre-DEF, pre-Forest River RV

40,000 LBS TOWING!!!!! (not a typo)

$184,900

RV located in San Diego, CA – registered and licensed in Texas - clean title in hand

We are the third owners, living full-time since 2021.
Pride of ownership is evident. This RV’s owners are Certified RV Inspectors, Master Certified/Certified RV Technicians and hold AquaHot repair certifications.

Dogs present; no smoking.

CHASSIS/EXTERIOR

62,174 miles on Freightliner Columbia chassis, Mercedes Benz Detroit Diesel 4000 – 450 hp
(engine oil and engine coolant changed less than 3,000 miles ago)

140-gallon saddle diesel fuel tanks – no DEF needed!

Full air drum (ABS) brakes

6 speed Allison automatic push-button transmission
(transmission fluid changed less than 3,000 miles ago)

Michelin 275/80R22.5 X Line Energy Coach tires – selected these tires as they are used on high-end motorhomes to provide a stable, comfortable ride
10 tires - 22,000 miles on the tires – DOT dates range from 3120 to 0621

adjustable Granning tag axle

Ravenwood paint (black & gold)

Four-point fully-automatic hydraulic leveling jacks
SnapPad permanent jack pads installed on front jacks (none available for rear jacks)

40,000 lb. capacity rear hitch (factory upgrade)
air compressor service lines at rear hitch and in battery bay (streetside front)

Roof – one-piece fiberglass

Diamond Shield on hood and front bumper – replaced January 2026

50A all-electric coach – 50A power cord on power reel
(Hughes Power Watchdog with Bluetooth power use monitor included with RV purchase)

Coach batteries (4 installed) - 172 Ah LiFePO4 batteries – upgraded from AGM batteries
Buss bar addition – space for 2 additional batteries and/or future solar panel installation

Xantrex inverter/charger (2 installed) – Freedom SW 3012 - dual 3000-watt power inverter/charger
upgraded with addition of LiFePO4 batteries

On-board generator – 12.0 KW Powertech diesel generator
approximately 1,200 hours of use
auto generator start – programmable function of Xantrex control panel and thermostat

AquaHot 600D – furnace and water heater – electric and diesel modes
approximately 1,850 hours of use on diesel mode over life of system
diesel burner – rebuilt in 2025; circulation pumps (4) – all new in 2025
propylene glycol RV boiler antifreeze flushed and replaced in 2025 (approx. 18 gallons)

Freshwater hose on power reel in water bay

TV cable connection in water bay – 50’ cable included

Black tank flush and macerator pump dump in water bay

Air conditioner / heat pump (3) – 15,000 BTU, ducted, low profile

Zip Dee slideout awning toppers on streetside slideouts – new in 2025

12V/AC Dometic portable refrigerator/freezer in curbside storage bay

Pass-through storage bay at rear of coach

Tool storage compartment in rear wall

Engine (oil, coolant), generator (oil, coolant), transmission fluid samples pulled in April/May 2026 – reports available on request

DRIVER COMPARTMENT/CAB

New front windshields - driver and passenger side

Back-up camera monitor mounted on dash; side view (turn signal) cameras work intermittently.

Garman 785 GPS navigation with front facing dash camera – can be programmed for height, length and weight of RV and tow vehicle/trailer

Cockpit driver and passenger chairs – Flexsteel ultraleather Bostrom – air/swivel pedestal
Adjustable air ride chairs make the journey much more comfortable!

Power windows/door locks
Heated power mirrors

Kenwood AM/FM/Pandora/Spotify/Bluetooth-enabled stereo receiver

Roof mounted dual air horns

CB radio

Cruise control

Dash instrumentation to stay informed about all chassis and engine systems (see photos)

INTERIOR

TrafficMaster African Wood Dark water resistant LVP flooring
(living room slideout and bedroom)

Travertine stone tile (kitchen and bath)

Controllers for floor heat (living area, bath) – upgraded in 2025

NO CARPET in coach; automotive carpet in cab area

Lighting (interior and storage bays) – upgraded to white LED bulbs (except rope accent lighting)

Fantastic Fan vents with rain sensor, remote control and roof vent cover (3 installed) – new in 2023
            living area/kitchen, bath, bedroom

Vinyl padded ceiling and walls

Silhouette day/night shades – entry door (new in 2026), bath, bedroom

MCD day/night roller shades – living room (upgraded)

Mini blinds – kitchen

Cabinets – real wood (cherry stain) with hidden cabinet hinges and Posi-Lock door latches

LIVING AREA / DINING AREA

Electric fireplace in living area

26” TV with remote (2 installed) - living area and bedroom
            (second living area TV and exterior TV removed from coach – hook-ups remain in place)

Bose sound system / DVD player with remotes

Factory furniture removed from living/dining slideout - NO couch or table installed.
12’L x 3’D blank slate waiting for your inspiration!
Next owner can furnish living/dining area according to own needs/taste/style.

KITCHEN

Granite countertops with backsplash in kitchen and bath

Double bowl sink in kitchen
Delta nickel single handle faucet with pull-out sprayer – new in 2025

Amana electric two-burner glass cooktop

Whirlpool convection microwave – upgraded

15 cu ft Amana refrigerator/freezer – electric double-door residential style

BATH

One-piece fiberglass shower with glass door/surround and skylight

Thetford china toilet with Tecma macerator – macerator new in Aug 2024

Splendide vented combo washer/dryer – new in Dec 2024

Built-in laundry hamper below washer/dryer

BEDROOM

King size Comfortaire bed (a Sleep Number brand) with dual remote controls

Large underbed storage

Two folding dining chairs and folding table stored under bed

Hardwood cedar-lined wardrobes – lots of closet and drawer storage in the bedroom

MANY EXTRAS INCLUDED WITH PURCHASE –

Hughes Power Watchdog 50A Gen 1 with Emergency Power Off (EPO); built-in Bluetooth integrates with smartphone app to track voltage, amperage, wattage and usage

Dogbone and adapter to use when 50A electric service is not available

30A extension cord – 25’

15A extension cord – 25’

Air dump valves for ride/braking system – 4 (brand new)

RV inline sanitizer – allows bleach to be added to freshwater tank for sanitizing with no mess

Clear2O DirtGUARD total water filtration system - inline external system installed on fresh water hose + whole house filter installed in water bay. Water pressure regulator and extra filters included – 1 pre-filter (10 micron), 2 inline water filters (1 micron)

3-D printed covers for water hose and sewer hose openings in water bay

Sewer system – 4 sewer hoses; 1 90-degree clear sewer hose adapter; 1 Rhino Blaster adapter for gray tank/sewer hose flushing (installed); 2 sewer hose supports; 1 sewer hose flexible drain adapter. Sewer supplies stored in separate plastic tote.

Heated water hose for cold-weather camping – brand new

RV water hose (not for freshwater use)

1 gallon Valvoline DEX/MERC transmission fluid – for use in hydraulic system

2-300 PSI rubber air compressor hoses with connectors/accessories (for use with on-board air compressor)

Seaflo High Flow Water Pump (new)

Trailer Valet XL Trailer Dolly with accessories

Garman 785 GPS navigation with front facing dash camera – can be programmed for height, length and weight of RV and tow (Micro-SD card and 12V DC charger included)

Service First Adventure series 20’ telescoping flag pole - stainless steel clips for 2 flags; carry bag, solar light and heavy-duty RV hitch flagpole holder included