Skip to main contentSkip to navigation
RV Envy
RV floor plans
Inventory
Sell your RV
Dealers
Dashboard
  • Class A motorhomes
  • Class C motorhomes
  • Class B vans
  • Fifth wheel trailers
  • Travel trailers
  • Pop-up campers
  • Advanced search
  • Floor plan wizard
  • Inventory

Browse popular layouts & features

Class A motorhomes

  • … with bunk beds
  • … with two bedrooms
  • … with bath and a half
  • … with two full bathrooms
  • … with bunk over cab
  • … with rear bathroom
Browse all features →

Class B vans

  • … with King size bed
  • … with rear twin beds
  • … with Murphy bed
  • … with rear bathroom
  • … with dual twin beds
Browse all features →

Class C motorhomes

  • … with bunk over cab
  • … with bunk beds
  • … with rear bathroom
  • … with rear twin beds
  • … with Murphy bed
  • … with outdoor kitchen
  • … with outdoor TV
Browse all features →

Fifth wheel trailers

  • … with bath and a half
  • … with two bathrooms
  • … with bunk beds
  • … with two bedrooms
  • … with side patio
  • … with rear patio
  • … with outdoor kitchen
  • … with washer/dryer
  • … with front living
Browse all features →

Travel trailers

  • … with bunk beds
  • … with two bedrooms
  • … with Murphy bed
  • … with outdoor kitchen
  • … with rear bath
  • … with front bedroom
Browse all features →

Popup campers

  • under $10k
  • under $15k
  • under 2,000 lbs
  • under 3,000 lbs
Browse all features →

RV dealers by metro area

Los AngelesDallas–Fort WorthHoustonAtlantaPhoenixTampa BayOrlandoDenverChicagoSeattleNashvilleTorontoBrowse all metro areas →

Explore

  • RV floor plans
  • Browse inventory
  • Sell your RV
  • Dealers
  • Shopping tips

Company

  • About
  • Our story
  • Contact

For dealers

  • Dealer websites & CRM
  • Dealer insights

Join our mailing list

We don't send much, but you won't want to miss it!

RV Envy

The RV search engine. Find your dream RV.

We do our best to keep listing details accurate, but pricing, specifications, and availability come from third-party sources and can change without notice. We can't guarantee accuracy, so please confirm the details with the dealer before making any decisions. See something inaccurate? Contact us.

© 2026 RV Envy. All rights reserved.

For AI agentsPrivacyTerms
Dashboard
    1. Home
    2. Travel trailers
    3. Grand Design
    4. Momentum G-Class
    5. 31G
    Grand Design Momentum G-Class 31G exterior

    Grand Design Momentum G-Class 31G

    Bath and a half

    • Bath and a half
    • Toy hauler
    MSRP

    $81,156

    Browse inventory (68)
    Grand Design Momentum G-Class 31G floor plan
    Grand Design Momentum G-Class 31G floor plan

    Key facts

    Find a Grand Design Momentum G-Class 31G

    See it in person or find a great deal nationwide.
    Browse inventory (68)

    Similar floor plans

    Travel trailers that share features with the Momentum G-Class 31G, like toy hauler.

    Ember RV Overland 221MSL exterior

    Ember RV Overland 221MSL

    MSRP$82,128

    34 units available

    Ember RV Overland 221MSL floor plan
    Max weight

    7,550 lbs

    Length

    26 ft 1 in

    Sleeps

    8

    inTech Aucta WILLOW exterior

    inTech Aucta WILLOW

    MSRP$75,866

    51 units available

    inTech Aucta WILLOW floor plan
    Max weight

    7,500 lbs

    Length

    26 ft

    Sleeps

    4

    Black Series HQ21 HQ21 BASE exterior

    Black Series HQ21 HQ21 BASE

    MSRP$69,899
    Black Series HQ21 HQ21 BASE floor plan
    Max weight

    8,200 lbs

    Length

    26 ft

    Sleeps

    4

    Black Series HQ21 Base exterior

    Black Series HQ21 Base

    MSRP$69,899
    Black Series HQ21 Base floor plan
    Max weight

    8,200 lbs

    Length

    26 ft

    Sleeps

    4

    inTech Terra Willow Base exterior

    inTech Terra Willow Base

    MSRP$68,950
    inTech Terra Willow Base floor plan
    Max weight

    7,500 lbs

    Length

    26 ft

    Sleeps

    4

    Ember RV Overland 221MDB exterior

    Ember RV Overland 221MDB

    MSRP$65,879

    1 unit available

    Ember RV Overland 221MDB floor plan
    Max weight

    7,550 lbs

    Length

    26 ft 1 in

    Sleeps

    8

    No image

    Eclipse Stellar 19SBG-LE

    MSRP$59,801

    1 unit available

    Eclipse Stellar 19SBG-LE floor plan
    Max weight

    9,900 lbs

    Length

    26 ft 1 in

    Sleeps

    6

    No image

    Eclipse Attitude 19FB-LE

    MSRP$52,551
    Eclipse Attitude 19FB-LE floor plan
    Max weight

    9,900 lbs

    Length

    26 ft 1 in

    Sleeps

    6

    Other Momentum G-Class floor plans

    Grand Design Momentum G-Class 21G

    MSRP$68,095

    90 units available

    Grand Design Momentum G-Class 21G floor plan
    Max weight

    11,000 lbs

    Length

    26 ft 11 in

    Sleeps

    6

    Grand Design Momentum G-Class 23G

    MSRP$73,820

    14 units available

    Grand Design Momentum G-Class 23G floor plan
    Max weight

    13,000 lbs

    Length

    28 ft 10 in

    Sleeps

    6

    Grand Design Momentum G-Class 25G

    Front bedroom

    MSRP$75,194

    108 units available

    Grand Design Momentum G-Class 25G floor plan
    Max weight

    13,000 lbs

    Length

    30 ft 11 in

    Sleeps

    6

    Grand Design Momentum G-Class 27G

    Front bedroom

    MSRP$72,319

    69 units available

    Grand Design Momentum G-Class 27G floor plan
    Max weight

    13,000 lbs

    Length

    32 ft 3 in

    Sleeps

    4

    Grand Design Momentum G-Class 28G

    Front bedroom

    MSRP$78,061

    10 units available

    Grand Design Momentum G-Class 28G floor plan
    Max weight

    13,000 lbs

    Length

    33 ft 11 in

    Sleeps

    6

    Grand Design Momentum G-Class 29G

    Bath and a half

    MSRP$69,971

    5 units available

    Grand Design Momentum G-Class 29G floor plan
    Max weight

    13,000 lbs

    Length

    33 ft 11 in

    Sleeps

    6

    Grand Design Momentum G-Class 29GO

    MSRP$52,448

    5 units available

    Grand Design Momentum G-Class 29GO floor plan
    Max weight

    7,900 lbs

    Length

    34 ft 11 in

    Sleeps

    6

    Grand Design Momentum G-Class 29GS

    MSRP$78,198

    91 units available

    Grand Design Momentum G-Class 29GS floor plan
    Max weight

    13,000 lbs

    Length

    34 ft 6 in

    Sleeps

    4

    Grand Design Momentum G-Class 30G

    MSRP$78,680

    6 units available

    Grand Design Momentum G-Class 30G floor plan
    Max weight

    13,000 lbs

    Length

    34 ft 10 in

    Sleeps

    7

    Grand Design Momentum G-Class 320G

    Bath and a half, front bedroom, loft

    MSRP$112,652

    98 units available

    Grand Design Momentum G-Class 320G floor plan
    Max weight

    16,400 lbs

    Length

    36 ft 3 in

    Sleeps

    5

    View all Momentum G-Class floor plans →
    Grand Design Momentum G-Class 31G overview
    • Bath and a half
    • Toy hauler
    Grand Design Momentum G-Class 31G exterior

    Key facts

    MSRP
    $81,156
    Length
    35 ft 11 in
    Max weight
    13,000 lbs
    Sleeps
    6

    Specs

    Dimensions

    Length
    35 ft 11 in
    Height
    12 ft 4 in
    Width
    8 ft 5 in
    Slideouts
    2
    Axles
    2

    Tanks & capacities

    Fresh water
    90 gal
    Gray water
    37 gal
    Black water
    76 gal

    Weight & towing

    Dry weight
    MSRP
    $81,156
    Length
    35 ft 11 in
    Max weight
    13,000 lbs
    Sleeps
    6

    AI summary

    The separate 13-foot garage is the star here. Owners consistently call it the sweet spot for fitting ATVs, dirt bikes, or gear without sacrificing a livable front section. Two entry doors mean you're not crawling through the living space every time you need something from the garage, and the bath and a half layout keeps the morning routine from turning into a bottleneck. Grand Design loaded the exterior with thoughtful touches: a 30-gallon onboard fuel station with interior and exterior gauges, Rockford Fosgate speakers with a powered sub, and motion-sensor storage lighting that actually makes late-night unpacking bearable. Construction-wise, the laminated aluminum framing and R-40 roof insulation punch well above the toy hauler average for this size class.

    8,975 lbs
    GVWR
    13,000 lbs
    Hitch weight
    1,600 lbs
    1/2 ton truck required
    New Ford F-150, RAM 1500, Sierra 1500, or bigger

    Based on overall weight and weight directly on tow vehicle's hitch and a new model tow vehicle. Please consult with a professional.

    Accommodations

    Sleeps
    6

    Available years

    202620252024202320222021
    On this page...