The 2026 Grand Design Momentum G-Class 394G is a flagship fifth wheel toy hauler designed for maximum space, cargo capacity, and residential comfort. At nearly 45 feet long with a wide-body chassis and triple slide-outs, it delivers one of the largest interiors in the G-Class lineup while maintaining a functional, adventure-ready design.
The 15-foot separate garage is built to handle large toys such as side-by-sides, motorcycles, or multiple ATVs. Once unloaded, the space converts into a flexible living area with a Happi-Jac bed system, seating, loft, and a convenient half bath. The rear ramp door transforms into a patio, expanding outdoor living space and usability at camp.
Inside, three slide-outs create a wide, open main living area featuring an L-shaped sofa, theater seating, fireplace, and entertainment center. The kitchen includes a residential 15 cu. ft. refrigerator, three-burner range with oven, microwave, and solid-surface countertops, supporting full meal prep for extended trips.
The front private bedroom provides a queen bed with wardrobe storage and washer/dryer prep, while the main bathroom features a large walk-in shower. The bath-and-a-half layout improves convenience for families and guests, especially when using the garage and patio areas.
Built for long-term travel, the 394G includes oversized holding tanks, a 30-gallon fuel station, and solar prep for off-grid capability. The heated and enclosed underbelly with high insulation ratings (R-40 roof/floor) supports four-season camping, while the 35,000 BTU furnace and multiple A/C options maintain comfort in varying climates.
Heavy-duty construction includes a triple-axle setup, aluminum cage frame, and high-capacity suspension, delivering stability and durability for hauling and long-distance towing.
Reasons to Buy the Momentum G-Class 394G:
- One of the largest G-Class toy haulers with maximum interior space
- 15’ garage with patio, loft, and half bath for versatility
- Sleeps up to 7 with multiple dedicated sleeping areas
- High-capacity tanks and fuel station for extended trips
- Four-season construction with upgraded insulation
Why Buy from Lazydays RV powered by Campers Inn RV:
- Competitive pricing on new Grand Design fifth wheel toy haulers
- Large inventory including flagship Momentum models
- Experienced RV specialists for toy hauler and full-time setups
- Flexible financing options for qualified buyers
- Full-service dealership for parts, maintenance, and upgrades
- Nationwide support network for continued ownership
†Lazydays strives to ensure the accuracy of the information provided on this website. However, actual products, programs and services may differ materially from those on this site. Lazydays is not responsible for errors made in stated pricing or specifications. Specifications and availability subject to change without notice. Price, length, weight, or any other specifications cannot be relied upon. Buyers should verify and confirm all claims made on the website. Sale price includes all manufacturer discounts and rebates. All prices listed on this site exclude tax, tags and title fees. Applicable government fees, state taxes, dealer fees and emissions testing charges will be added to comply with state vehicle codes. Freight and prep costs are additional and vary by state. Contact Lazydays for complete details.
*90 Days – Payments can be deferred for 90 days with approved credit. Interest accrues from contract date. Financing terms subject to lender approval. Not valid with other offers. Actual products, programs and services may differ materially from those on this site. Lazydays is not responsible for errors made in stated pricing. Specifications and availability subject to change without notice. Document fees vary by location. See dealership for complete details.
**Lazydays believes the specifications on this site supplied by the manufacturer to be correct at the time posted. However, specifications, standard equipment, model availability, options, fabrics, and colors are subject to change without notice. Some equipment may be unavailable when a vehicle is built. Some vehicles are pictured with options, which may be available at extra cost or may not be available on some models. You should verify the equipment that is on all vehicles. If a new vehicle shown on this website is subject to an open safety recall, Lazydays cannot deliver the vehicle to you until the recall repair is completed. This is a requirement of federal law.
***The advertised discount contains a $4,000 finance incentive. Finance Incentive applies if financing for your RV purchase is obtained with assistance by Lazydays and placed with a third party lender. Terms and Conditions may apply. Contact our finance department for further details.
****Margaritaville offer valid for a limited time only at Lazydays RV of Tampa. Customers who purchase a new RV or complete a qualified service appointment (appointment must be booked and customer must show for the appointment) are eligible to receive a complimentary 3-day, 2-night stay at Camp Margaritaville RV Resort of Auburndale. Offer valid while supplies last. Promotion is non-transferable, has no cash value, and cannot be combined with other offers or promotions. Limit one promotional stay per customer, per transaction. Resort stay subject to availability and blackout dates may apply. Resort reservation must be made within 30 days of RV purchase or completed service appointment. Valid for Florida residents and legal U.S. residents only, 18 years or older. Additional terms and conditions may apply. Lazydays RV of Tampa reserves the right to modify or cancel this promotion at any time without notice. Void where prohibited by law.
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