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• 2021 Momentum M-Class 398M

2021 Grand Design Momentum 398M Toy Hauler 18’ Garage | 1.5 Baths | Sleeps 12 | Fully Loaded

Location: Tuttle, Oklahoma

Price: $74,900

Transferable Extended Warranty through August 2028

Contact: 4055201518

️ Luxury + Adventure: Ready for the Road or Full-Time Living

This 2021 Grand Design Momentum 398M is a top-tier fifth-wheel toy hauler offering unbeatable comfort, storage, and hauling power. With a spacious 18’ garage that holds even large UTVs, a residential kitchen, and the ability to sleep up to 12, its built for everything from weekend trips to full-time RV life.

Key Highlights

4311 | 3 Slides | 1.5 Baths | Sleeps 12

18’ garage with four drop-down beds & a half bath

18’ Garage fits large UTVs

Transferable extended warranty (valid through August 2028)

Auto-leveling hydraulic jacks

Onan 5.5kW Generator + Solar Panel & Inverter

3 A/C units + 35,000 BTU furnace

Tankless water heater

All-weather insulation & heated underbelly

Central vacuum system

️Comfortable Sleeping for up to 12

Master bedroom with king-size space (queen installed)

4 drop-down beds in garage

Twin loft above garage

Super sofa with heat & massage

Climate control + blackout shades + LED lighting

Gourmet Kitchen

Full-size residential refrigerator (propane/electric)

3-burner stove & oven (used only 3 times)

Microwave, pantry & kitchen island

Stainless sink & solid surface counters

Bathrooms & Comfort

Full master bath with fiberglass shower + glass door

Half bath in garage

Vanity, porcelain toilets, tankless water heater

Washer/dryer hookups, fireplace, USB charging ports

Entertainment & Tech

3 TVs: Living area, garage, and exterior

Stereo system w/ Bluetooth, satellite-ready

Interior/exterior speakers + exterior TV hookup

Furrion camera system (side & rear)

Color-changing LED mood lighting

️ Specifications

GVWR: 20,000 lbs | Dry Weight: 15,000 lbs

Hitch Weight: 2,980 lbs

Fresh Water: 155 gal | Gray: 104 gal | Black: (2) x 52 gal

LP Gas: 60 lbs (2 x 30 lb tanks)

3 Axles | 13’-5” tall

Gen-Y Executive 5th wheel hitch included

Exterior fueling station for toys/generator

️ Exterior & Storage

3 Power awnings

Rear ramp with bug screen converts to patio

Pass-through basement storage

Aluminum wheels, roof access ladder, exterior lighting

Flush-mount tinted windows & auto-leveling system

Entry steps, exterior 110V outlets, and exterior stereo

Safety

ABS Tow Assist & Sway Mitigation System

Furrion camera system

Smoke, CO, and LP detectors

Emergency exit, spare tire kit, running lights

PACKAGE DEAL OPTION 2023 Ford F-350 Dually AVAILABLE

Want a turn-key setup? We are also selling our 2023 Ford F-350 Dually with just 52,000 miles. It’s a perfect tow vehicle for the Momentum and available as part of a package deal. Listed price does not include price of pickup.

Note: The truck will not be sold before the RV. Inquire for pricing on the RV or full package.