Skip to main content

New 2025 Grand Design Momentum G-Class 21G

Virtual Tour
Call Today 209-924-4022
2025 21G Features and Options

Grand Design Momentum G-Class toy hauler 21G highlights:

  • Queen Bed Slide
  • Master Suite
  • Euro Chairs
  • Ramp Door/Patio
  • Fuel Station
  • 14' Garage

 

You don't have to rough it with all the amenities found in this Momentum G-Class toy hauler including your own master suite with a walk-around queen bed slide and private access into the dual-entry bathroom. The kids or your friends can sleep on the Happi-Jac rollover sofas with an optional top bed, and the Euro chairs can become the waiting area for the next rider. Keep the party going all weekend long with your very own fuel station and the exterior speakers. Come see why this model will fit perfectly into your off-road lifestyle!

 

Are you looking for adventure and fun? The Momentum G-Class toy hauler by Grand Design will help you find it! You can explore during any season you choose with the Insulation Package that includes a heated and enclosed underbelly with suspended tanks, a high-capacity furnace, a moisture barrier floor enclosure, and cabinet-mounted heat ducts. Each model includes a fuel station with an interior and exterior gauge, a dovetail rear rend, and 2,500-LB tie-downs anchored into the chassis. Throughout the Momentum G-Class interior, you'll enjoy many comfortable features like large panoramic windows, a shower skylight, USB chargers in the bedroom, and residential cabinetry.

Options:
  • 4.5K WATT GENERATOR
  • 8 CU FT 12V REFER
  • A/C W/RACE TRACK DUCTING
  • EXTERIOR PKG
  • GARAGE PKG
  • GEN II 3 SEASON DOOR
  • GOODYEAR TIRES
  • HAPPI-JAC ELECTRIC BUNK
  • INSULATION PKG
  • LUXURY INTERIOR PKG
  • REAR ALUMINUM DECK SYSTEM
  • ROCKFORD FOSGATE STG 1
  • RVIA SEAL
  • SAFERIDE RV ROADSITE
  • SOLAR½ PKG
  • UNDER UNIT LED KIT
What Our Customers Are Saying

Perfect place to buy a motor home

"We purchased a 2009 Allegro 32BA and are exceptionally happy with this motor home. This is our first product by Tiffin, and we appreciate their quality. Both John and Walt were very easy to deal with, and knew their stuff when explaining the motor home. The financing went smoothly as well, as Tory handled us in a very professional manner. Would we come back ??? Absolutely ! Thanks everyone at Happy - Barry
MSRP: $77,175
Location: Ripon
Stock# 70088
2025 21G Specifications
Sleeps 4
Slides 1
Length 26 ft 11 in
Ext Width 8 ft 5 in
Ext Height 12 ft 4 in
Int Height 7 ft 7 in
Interior Color DUSK
Hitch Weight 920 lbs
GVWR 11000 lbs
Dry Weight 6400 lbs
Fresh Water Capacity 90 gals
Grey Water Capacity 74 gals
Black Water Capacity 39 gals
Tire Size ST235/80R16 LRE
Furnace BTU 30000 btu
Fuel Capacity 30 gals
Available Beds Queen
Refrigerator Type Stainless Steel
Refrigerator Size 8 cu ft
Cooktop Burners 3
Shower Size 27" x 36"
Number of Awnings 1
Garage Size 14 ft
LP Tank Capacity 20 lbs
Water Heater Type Tankless
AC BTU 15000 btu
TV Info LR 40" TV
Awning Info 19' Power with LED Lights
Axle Count 2
Number of LP Tanks 2
Shower Type Walk-In Shower
Electrical Service 30 amp
VIN 573TM2722S1221643
For more information, call us at 209-924-4022 or Contact Us
Similar RVs and Floorplans

Loading

ManuFacts
Grand Design Logo
In 2012, we started with a blank canvas to pursue that better way, a different way, than what had been done before. A company whose culture requires a long-term, personal connection with our customers, employees, and dealers – that company is Grand Design RV. Our business model of doing the right thing has led us to unparalleled years of growth.
 
Our local workforce has been hand-picked and has an excellent reputation for second-to-none industry craftsmanship, and our CEO and Senior Management actively work with the production facilities to help build the team and develop products.
 
At Grand Design we've raised the quality bar by putting every unit through a series of quality inspection gates during the manufacturing process. Once completed, the unit undergoes a comprehensive “final finish” inspection. Every one of our coaches is shipped to a PDI (Pre-Delivery Inspection) area where they are put through a rigorous 300+ point inspection checklist before being shipped to our dealers.  And, we back every one of our coaches with a 3-year limited structural warranty.  
 
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. We strive for nothing less than customers for life and we would be honored to personally welcome you to the Grand Design RV family!

Happy Daze RV is not responsible for any misprints, typos, or errors found in our website pages. Any price listed excludes sales taxes, registration, tags and delivery fees. Manufacture pictures, specifications, and features may be used in place of actual units on our lot. To preserve the quality and mileage of our coaches, we only do test drives with a qualified offer to purchase.