2025 Grand Momentum for Sale

The Momentum is Grand Design's fifth-wheel toy hauler line, pairing a full residential-style living area with a rear garage big enough for ATVs, side-by-sides, or motorcycles. It is built around the same luxury approach as the Solitude — master suite, master bath, big slides, and high tank and fuel capacities — with the added utility of a garage that converts to extra sleeping and living space. Floor plans run roughly 40 to 46 feet on a 19,000-23,500-lb GVWR chassis with garages from about 10 to 17 feet, and most include an onboard fuel station and ramp-door patio capability. On RV Insider the Momentum line averages 3.5 stars over about 79 reviews, lower than the Solitude, with the weight and complexity of a big toy hauler showing up in some owner reports. Critically, 2017-2023 Momentum fifth wheels are part of the open NHTSA frame-flex investigation, so any unit from that era needs a thorough frame and pin-box inspection before purchase.

Looking for a Grand Momentum for sale?

You're in the right place. We don't sell the Momentum off a lot — we work for you, find the cleanest one on the market new or used, inspect it, and negotiate it. Below is everything you need to know before you shop: the real specs, every floor plan, the photos, what it tends to sell for, and a straight read on what owners love and what they grumble about.