2026 Grand Design Momentum G-Class TT 31G 

2026 Grand Design Momentum G-Class TT 31G

Built for Adventure: The Grand Design Momentum G-Class Travel Trailer for Power Sports Enthusiasts

The Grand Design RV Momentum G-Class is North America's number one selling toy hauler travel trailer, and for good reason. With spacious interiors and versatile floorplan configurations, the Momentum G-Class is perfect for outdoor enthusiasts who want to bring their toys along for the ride. Whether you're into power sports, camping, or simply exploring the great outdoors, the Momentum G-Class has everything you need to make your next adventure a success.

But the Momentum G-Class isn't just spacious and versatile—it's also built to last. With superior construction and attention to detail, this toy hauler can handle the toughest terrain and weather conditions, ensuring that you and your family stay safe and comfortable no matter where your adventures take you. And with industry-leading customer support from Grand Design, you can travel with confidence knowing that you have a team of experts to support you every step of the way. Plus, as part of the growing and vibrant community of Grand Design owners, you'll be connected to a network of like-minded individuals who share your passion for outdoor adventure.

Go big, conveniently.

The all new Momentum G-Class is lighter without sacrificing any comfort or spaciousness — thanks to our tall ceilings and slide outs. With all of the quality, innovation, and functionality that our family of Momentum owners love, it's everything you need and nothing you don’t.

Features May Include:

EXTERIOR

• Main A/C with Race Track Ducting
• Backup Camera Prep
• Black Tank Flush
• Full Sized Spare Tire & Carrier
• 80% Tint Radius Safety Glass Windows
• 20# LP Bottles (2) w/Cover
• Radius Entry Door
• High-Capacity Water Pump
• Extra Large 1 1/2” Fresh Water Drain Valve
• Battery Disconnect Switch
• Folding Roof Ladder
• Gel Coated Fiberglass Exterior
• Easy Access Low Point Drain Valves
• Insulated Storage Doors
• Magnetic Storage and Entry Door Latches
• 18’-19’ Awning w/LED Accent Lighting
• Under Unit Accent Lighting
• Rockford Fosgate Speaker Package with Powered Sub
• Solar Prep (10 gauge wiring with universal MC4 connectors)
• Motion Sensor Exterior Storage Lighting
• Motion Sensor Entry Lighting
• Fiberglass Front Cap w/Paint
• 48” LED Front Cap Lighting
• Diamond Plate Front Rock Guard
• Triple Aluminum Tread Entry Steps
• 30 Gallon Fuel Station w/Interior and Exterior Gauge

CONSTRUCTION

• Power Tongue Jack
• Oversized Tank Capacities
• One-Piece TPO Roof Membrane w/ Limited Lifetime Warranty
• Laminated Aluminum Framed Rear Ramp Door (R-12)
• Laminated Aluminum Framed Side Walls (R-7)
• Laminated Aluminum Framed Roof and End Walls in Slide Rooms (R-7)
• 1” Marine Grade OSB Floor (R-30*)
• 5" Radius Wood Framed Roof (R-40*)
• Universal Docking Station
• Walk on Roof
• No Wheel Wells
• Double Insulated Roof and Front Cap (R-40*)
• Heated and Enclosed Dump Valves
• High Density Roof Insulation w/Attic Vent
• Moisture Barrier Floor Enclosure
• Cabinet Mounted Heat Ducts

ELECTRICAL

• 50 Amp Service (21G & 23G - 30 Amp Service)
• Detachable Marine Grade Power Cord w/LED Light

INTERIOR

• Under Counter Accent Lighting
• Above Cabinet Accent Lighting
• Solid Hardwood Drawer Fronts
• Solid Core Cabinet Stiles
• Pre-Drilled and Screwed Cabinetry
• Ball Bearing Full Extension Drawer Glides
• Large Panoramic Windows
• Night Shades (All Windows)
• Upgraded Residential Furniture
• Residential Countertops
• Stainless Steel Accented Microwave
• Stainless Steel Accented 3-Burner Range with Oven
• Glass Range Cover (Flush w/Counter Top)
• Stainless Steel Accented Double Door Refrigerator
• Sink Cover
• Bottle Opener
• Residential Cabinetry

KITCHEN

• Deep Seated Stainless-Steel Sink
• Residential Pull-Down Sprayer Faucet

BEDROOM

• Large Backlighted Mirror
• Night Stands
• Bedside Outlets
• USB Chargers
• Solid Bedroom Door
• Residential Bedspread
• TV and Cable Prep

BATHROOM

• Residential Walk-In Shower
• Skylight Over Shower
• Power Vent Fan
• Medicine Cabinet with Mirror
• Headboard
• Double Entrance Bathroom

PLUMBING

• On Demand Water Heater

APPLIANCE

• Stainless Steel Accented Appliances

ELECTRONICS

• Rockford Fosgate Bluetooth Stereo
• High Definition LED Television

HVAC

• 30K BTU High Capacity Furnace
• Heated and Enclosed Underbelly w/Suspended Tanks