Serving the Central Coast and Beyond for over 45 years
Sales 1-800-847-2989 Service: 1-805-929-2254 Parts: 1-805-474-1603
Get Approved Now!

New 2018 Grand Design Momentum 399TH

Lowest Price On The West Coast!
Virtual Tour
Call 800-847-2989
2018 399TH Features and Options

Your local dealer DOES NOT WANT YOU TO SEE HOW LOW OUR PRICES ARE! MSRP on this unit is $111,188 and MAP on this unit is $88,995. Click "Get Rock Bottom Price" to the right and receive our lowest price instantly in your inbox! We are the Low Price Leader. Make sure you compare the options that we offer to your local dealers list! Buy with us and save THOUSANDS!

Model 399TH offers a 13' garage for toys, sleeping space for a few extra, kitchen and bath amenities. One and a half baths, a fireplace, an 18 cu. ft. refrigerator, and a fold down side patio, plus more! 

13' of toy parking space, the rear ramp door will make loading a snap. You can choose a rear ramp door patio option. Inside the garage area you will find an LED TV, overhead cabinets, overhead loft, and a half bath. You can add an optional Happi-Jac with rollover sofas including a top bed. In the cargo area there is a side man entry door for quick access to the garage and half bath, a location that has been prepped for a washer and dryer.

Head into the main living area to find a sliding glass door to a fold-down side patio. On the inside you will find a home like space filled with everything you need. There are dual opposing slides in the main living room and kitchen area. An 18 cu. ft. refrigerator a three burner range and overhead microwave oven for all your cooking needs. A center island features a double sink, and countertop space.

Along the roadside another slide with a free standing dinette and theater seating for two. You can opt. for a super sofa. An entertainment center with an LED TV and fireplace below. Head up the steps to a front master bedroom and complete bath. The bath includes a large shower with skylight and seat, linen cabinet, toilet, and vanity with vessel bowl sink. A second bath entry door slides to allow easy access to the master.

In the bedroom there is queen or optional king size bed, dual nightstands, overhead cabinets, and a slide out closet with drawers for all of your clothing. You will appreciate the convenience of the unobstructed pass-through storage compartment when loading and unloading your outdoor gear, plus the universal docking station, and much more!

INCLUDED PACKAGES & OPTIONS
Momentum Exterior Package (see below)
Momentum Interior Package (see below)
Momentum Garage Package (see below)
Weather-Tek Insulation Package (see below)
Under Unit Blue LED Kit
2nd A/C Bedroom 15K BTU
Generator - Onan 5.5KW Gasoline Generator
3rd A/C Garage 13.5K BTU w/Load Management System
King Bed Upgrade
Super Sofa Upgrade
Happi-Jac Electric Bunk System w/Folding Sofas
3 Season Garage Wall
Rear Aluminum Deck System w/Rear Box Awning 
Momentum Patio Chairs
Exterior Entertainment Center
Load Range G Tire Upgrade (7 Wheel)
Auxiliary Fresh Water Tank
Winterization
RVIA Seal

Exterior Package
Satellite TV Prep (All TV Locations)
Aluminum Quad Entry Steps - Garage Entry
7,000 lb. Axles w/Self Adjusting Brakes, Wet Bolts and Bronze Bushings
16” Aluminum Wheels (120PSI Rated)
West Lake® G-Rated Tires w/NitroFill™
Slam-Latch Baggage Doors
Frameless Tinted Windows
Aluminum Quad Entry Steps - Main Entry
Exterior Security Lights
Power Patio Awning w/LED Lighting
Folding Roof Ladder
White Gel Coat Fiberglass Front Cap
12V Battery Disconnect
All-In-One Exterior Utility Center
50 Amp Service
Converter
Enclosed Fuel Station w/ Dual Fuel Tank
Full Paint Gel Coat Fiberglass Front Cap
Solid Step Quad Entry Step - Main Entry

Interior Package
49" Class LED TV in Living Area
Stereo Entertainment System w/Bluetooth and App Based Controls in Living Area
Washer/Dryer Prep
12 Gallon Gas/Electric Water Heater
Roller Shade Window Coverings (Main Living Area and Bedroom)
Recessed LED Puck Lighting
Solid Surface Countertops w/ Sink Covers
Stainless Steel Undermount Kitchen Sink
Chef Inspired Range & Oven w/ Cover
Kitchen Pantry w/ LED Light Strip
Garage Control Panel

Garage Package
32" Class LED TV in Garage
Protective Diamond Plate on Garage Sidewalls
2,500 lb. Rated Flush-Mount Tie-Downs
Ram-Air Garage Vents Both Sides
Tuff-Ply Gas and Oil Resistant Garage Flooring
Fast Ramp Rear Ramp Door
Triple Insulated Garage Floor

Weather-Tek Insulation Package
R-Value Equivalent (R-40 Roof / R-45 Floor / R-11 Sidewalls / R-40 Garage Floor / R-24 Slideroom Floor)
Fully Enclosed and Heated, Underbelly and Storage Area
Enclosed and Heated Low Point Drains
Engineered Underbelly Airflow Heat Paths
Stealth AC System w/ Insulated A/C Ducts
Attic Vent
Plumbing Line Insulation Barrier

In addition to the optional equipment and packages listed above, this trailer is also equipped with the following standard features:
Interior Color Changing LED Accent Lighting
Raised Panel Hardwood Cabinet Doors w/Hidden Hinges
Sofa w/Headrest & Removable Swivel Tables (Includes Heat, Massage & LED Lighting Package
Central Vacuum System w/ Tools and Dust Pan
Under Mount 16” Spare Tire
Door Side Exterior Spray Port
6-Point Hydraulic Leveling System
Trailair® Roto-Flex™ Pin Box
Keyed Alike™ Ramp Door Latches
Power Patio Awnings w/ LED Lights
High-Gloss Gel Coat Exterior Sidewalls
Convection Microwave
18 Cu. Ft. Refrigerator
Kitchen Barstools w/ Extended Countertops
One-Piece Fiberglass Shower w/Glass Door
Skylight Above Shower
Medicine Cabinet w/Mirrored Door
Drop Frame Chassis (12" over 10")
Trailair® Equa-flex® Suspension
Individually Switched Reading Lights Over Bed
Bedside 110-Volt Outlets
60" X 80" Queen Memory Foam Mattress
Under Bed Storage Area
Rear Cargo Loading & Backup LED Lights
No-Crank Digital TV Antenna w/Booster
Satellite/Solar Roof Access Channel
32" Class LED TV in Bedroom
TV Prep in Garage (NA 376TH)
Exterior Entertainment Center w/LED TV & DVD
OneControl™ 7" Touchscreen Control Panel w/App Controls and Redundant Slide Switches
Generator Prep
12v High Power Fan - Master Bath
12V Tank Heaters (All Tanks)
35k BTU High Capacity Furnace
Fireplace w/ 5,000 BTU Electric Heater
15k BTU A/C - Middle/Main
2nd 15k BTU A/C - Bedroom
3rd 13.5k BTU A/C (Includes Energy Mgmt. System & 3-Zone Thermostat)
12v High Power Fan (Kitchen)

Similar RVs and Floorplans

Loading

MSRP: $111,188
Location: Nipomo
Stock# 8159
These photos and this video are of the actual unit.
2018 399TH Specifications
Sleeps 7
Slides 3
Length 43 ft 4 in
Ext Width 8 ft 5 in
Ext Height 13 ft 5 in
Interior Color Mocha
Hitch Weight 3400 lbs
Gross Weight 20000 lbs
Dry Weight 15900 lbs
Fresh Water Capacity 117 gals
Grey Water Capacity 104 gals
Black Water Capacity 104 gals
Tire Size 16"
Furnace BTU 40000 btu
Fuel Capacity 60 gals
Number Of Bunks 1
Available Beds Queen
Refrigerator Type 4 Door
Refrigerator Size 18 cu ft
Convection Cooking Yes
Cooktop Burners 3
Number of Awnings 2
Axle Weight 7000 lbs
Garage Size 13 ft
LP Tank Capacity 30 lbs.
Water Heater Capacity 12 gal.
Water Heater Type Gas/Electric
AC BTU 43500 btu
TV Info LR TV, BR LED TV option, Garage LED TV, Ext. LED TV
Awning Info 14' & 16' Power
Axle Count 3
Washer/Dryer Available Yes
Number of LP Tanks 2
Shower Type Shower w/Seat
Electrical Service 50 amp
Visit Us Trailer Hitch RV Sales
215 N. Frontage Road
Nipomo, CA 93444
Toll-Free: 800-847-2989
Local: 805-929-8095

Trailer Hitch RV Service
545 Sandydale Drive
Nipomo, CA 93444
Toll-Free: 1-800-847-2989
Local: 805-929-2254

Trailer Hitch RV World Parts
1530 West Grand Avenue
Grover Beach, CA 93433
Local: 805-474-1603
Main: 805-474-1603
Get Directions
For more information, call us at 805-929-8095 or Contact Us
ManuFacts
Thank you for taking the time to look at Grand Design RV.  We would like to share some insights into what sets Grand Design RV Company apart from all other RV manufacturers and why this difference is important to you.   We were part of the original ownership team that led a top RV Manufacturer to become the largest travel trailer and fifth wheel company in the world.  While proud of our accomplishments at this company,  it became difficult to stay in touch with the needs of our customers, employees and ultimately the products we built.  In 2011, we set out to pursue our dream and re-establish the personal connection we had enjoyed with customers and dealers.  The result is Grand Design RV Company.  Starting with a blank canvas, we were able to do things differently than what had been done before. 
 
After achieving unparalleled years of growth, Grand Design formed an alliance with one of the industry's most iconic brands...Winnebago. Operating as an independent business within Winnebago Industries provides additional financial stability and enables us to continue Grand Design's unique way of doing business for our current and future customers.
 
LONG TERM VALUE Everything we do at our company is designed to build long term value in what we offer our customers, “more features and superior value for your dollar.” 
 
CUSTOMER FOCUS Our focus (from the very first day we opened our doors) revolves around our customers.
 
STAYING CONNECTED Magic happens when the President and Senior Management are all actively working in the production facilities to help build the team and develop products.
 
EXPERIENCED WORKFORCE Our local workforce has been hand-picked, and has an excellent reputation for quality craftsmanship that is second to none.
 
CLASS LEADING WARRANTY  We back every one of our coaches by a 3-year limited structural warranty.
 
RAISING THE QUALITY BAR   We put every Grand Design unit through a series of quality inspection gates during the manufacturing process.  Once completed, the unit undergoes a comprehensive final finish inspection.  From here, most manufacturers ship their units on to the dealer for retail sale.  Not Grand Design...Every one of our units are shipped to a separate PDI (Pre-Delivery Inspection) location where they are again put through a 280+ point inspection process.  It is only after this that we deem a unit ready to ship to our dealers.    
 
SUPERIOR SERVICE  We deliver the highest quality in the industry, but anything built by humans can be subject to issues.  It’s how those issues are addressed that stands out with Grand Design.  Don’t just take our word for it, visit the owners page on Facebook (Grand Design RV Owners) and see for yourself how we take care of our customers after the sale.  An informed customer will be a Grand Design customer!
 
At Grand Design our goal is simple...Continue leading the industry with quality products while improving the customer's RV experience before, during, and after the sale.
Trailer Hitch RV is not responsible for any misprints, typos, or errors found in our website pages. Any price listed excludes sales tax, registration tags, and delivery fees. Manufacturer pictures, specifications, and features may be used in place of actual units on our lot. Please contact us @805-929-8095 for availability as our inventory changes rapidly. All calculated payments are an estimate only and do not constitute a commitment that financing or a specific interest rate or term is available.