Grand Design Momentum Specifications by Model

The Grand Design Momentum and Momentum M-Class Toy Haulers are the most popular models for people that want to work and play hard. The Momentum line has innovative designs, quality construction, and luxurious appointments.

Key Features

  • Toy Hauler with Garage
  • Thermal Roof Design
  • Fully Laminated Walls
  • Triple Insulated Main & Garage Floors
  • Insulated Baggage Doors
  • Vented Attic

Momentum Manufacturer Suggested Retail Price (MSRP) by Model

ModelYearBase
Price
+ Mandatory
Options
MSRP
Fully Loaded
376THS2021$92,812$110,814$146,591
397TH2021$81,621$102,052$146,338
399TH2021$86,739$106,301$150,587
349M2021$67,102$83,993$126,666
351M2021$68,087$84,978$127,074
381M2021$72,730$89,621$134,199
398M2021$75,467$92,358$137,513
Pricing updated 8/2020. BASE Price is Model MSRP. Mandatory Options are Required. MSRP Fully Loaded includes all premium options including custom paint, solar, 8K LB Axle upgrade, premium sound system, slide toppers, etc.
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Momentum Weights by Model

ModelUVWHitch
Weight
GVWRPayloadAxle SizeLength
376THS15,9003,25020,0004,1003 x 700041′ 1″
397TH15,6003,37520,0004,4003 x 700043′ 1″
399TH15,9003,40020,0004,1003 x 700043′ 1″
388M14,3002,80018,5004,2003 x 700041′ 9″
394M15,1003,15020,0004,9003 x 700042′ 4″
395M15,4003,15020,0004,6003 x 700041′ 11″
376TH15,9003,25020,0004,1003 x 700041′ 3″
351M13,8002,78516,8003,0002 x 700038′ 6″
381M14,7002,80020,0005,3003 x 700042′ 9″
395MS15,60029,00020,0004,4003 x 700043′ 8″
398M15,0002,98020,0005,0003 x 700043′ 1″
328M12,4002,45016,5004,1002 x 700035′ 11″
350M13,5002,82516,5003,0002 x 700038′ 9″
354M13,4002,70016,5003,1002 x 700039′ 4″
349M13,6002,92517,0003,4002 x 700038′ 11″
**All weights in LBS. Numbers based on Average Configurations. Axle Size can be upgraded as an option on most 2021 models forward to 8,000 LB. The 8K Axle upgrade increases GVWR by approximately 1,000 LB depending on model.

Momentum Capacity by Model

ModelFresh WaterGray WaterBlack WaterWater HeaterFuel Tank(s)LP Gas
376THS11510452123060
397TH155104104126060
399TH155104104126060
388M1177878126060
394M15710452126060
395M15510452126060
376TH15710452123060
351M1557878126060
381M1557878126060
395MS100104104126060
398M15510452126060
328M15710452124060
350M1177878126060
354M15710452126060
349M15510452126060
**Liquid Weight in Gallons. LP in LBS.
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Momentum Insulation by Model

ModelMain FloorGarage FloorWallsRoof
376THSR-45R-40R-11R-40
397THR-45R-40R-11R-40
399THR-45R-40R-11R-40
388MR-45R-25R-11R-40
349MR-45R-40R-11R-40
395MR-45R-40R-11R-40
376THR-45R-40R-11R-40
351MR-45R-40R-11R-40
381MR-45R-40R-11R-40
395MSR-45R-40R-11R-40
398MR-45R-40R-11R-40
328MR-45R-40R-11R-40
350MR-45R-40R-11R-40
354MR-45R-40R-11R-40
349MR-45R-40R-11R-40
**Insulation R-Values Chart by Zone

Momentum Floor plans and additional information for each model can be found on Grand Design's Website.

Jim Kerr

Jim Kerr is a entrepreneur that has founded several businesses including Orbitz, Team Convergence, Assure Flight, and Passion Highway. He is an airplane pilot, PADI SCUBA Dive Master and adventure traveler. Along with his wife Lisa, they travel North America in their 2020 Grand Design Momentum 397TH Toy Hauler with their cat Dexter. To find out more about Jim, visit JamesNKerr.com

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