2026 Grand Design Momentum G-Class TT 21G

Information

2026 Grand Design Momentum G-Class TT 21G

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:

  • Thermal Roof Design (R-40)*
  • Full Laminated Walls (R-7)*
  • Triple Insulated Main Floor (R-40)*
  • Triple Insulated Garage Floor (R-40)*
  • Vented Attic

Photos

Highlights

  • Santa Rosa, California
  • 2026
  • Grand Design
  • Momentum G-Class TT 21G
  • Available
  • 7' 7"

Specifications

  • 2026
  • Grand Design
  • Momentum G-Class TT
  • 21G
  • Travel Trailer
  • Standard Bed: 60 X 80 Queen Bed | Shower: 27 X 36
  • 12' 2"
  • 26' 11"
  • 8' 5" | (w/ slide out): 11' 4"
  • 7' 7"
  • 14
  • 19
  • 920 lbs.
  • 6,400 lbs.
  • 11,000 lbs.
  • 90 gal.
  • 74 gal.
  • 39 gal.
  • 40 gal
  • 6
  • 30 lbs
  • Tankless
  • 8 cu. ft.
  • Propane Tanks: 2 | Construction Type: Laminated | Slide Room R-Value: R-7 | Garage R-Value: R-30 | Slides: 1 | Awnings: 1
  • R-40
  • R-7
  • R-40
  • 30,000 BTU
  • 15,000 BTU
  • 2
  • 16 in.
  • ST235/80R16LRE