Sales (800) 762-7448 Ext 1

Mon-Fri 8:00AM - 5:30PM

Sat 8:00AM - 5:00PM

Sun 10:00AM - 4:00PM

Service (800) 762-7448 Ext 2

Mon-Fri 8:00AM - 5:00PM

Sat Closed

Sun Closed

Parts (800) 762-7448 Ext 3

Mon-Fri 8:00AM - 5:00PM

Sat 9:00AM - 2:00PM

Sun Closed

Search inventory

Home
Inventory
All Inventory Travel Trailers Toy Haulers Fifth Wheels Class C Truck Campers Pop-Ups & Teardrops Class A Class B
New RVs Used RVs
RV Brands
Financing
RV Financing Value Your RV
Parts & Service
Parts Service
Merchandise Towing Guides
About
About Us Testimonials Submit a Testimonial Gallery
Contact Us

Grand Design

Sleeps

All Sleeps
2 1
4 1
7 1
10 1

Slide-Outs

All Slide-Outs
1 2
3 2

Length

Any Length
30-34 ft 2
40-44 ft 1

Search Grand Design inventory

1 unit found

2024 Grand Design Momentum 399TH

Used 31% off

Toy Haulers Stock #CW18864A

2024 Grand Design Momentum 399TH

Sleeps 73 slides40-44 ft

$88,497 $128,475 View Details →

Family owned and operated in Yuma since 1991, RV World is a full-stop RV dealership — sales, service, parts and warranty work all under one roof.

Visit Us

5875 E. Gila Ridge Rd
Yuma, AZ 85365
info@rvworldyuma.com

Departments

Sales (800) 762-7448 Ext 1
Service (800) 762-7448 Ext 2
Parts (800) 762-7448 Ext 3

© 2026 RV World Yuma. All Rights Reserved.

Site Developed by MGM Design