Forest River XLR Boost 27QBX vs Grand Design Momentum 351M: used prices, mileage and specs
As of October 24, 2026, a used Forest River XLR Boost 27QBX has a median asking price of $35,200, versus $60,250 for the Grand Design Momentum 351M (42% less). Based on 18 active listings; typical mileage are 0 (Forest River XLR Boost 27QBX) and 0 (Grand Design Momentum 351M).
Data as of October 24, 2026 · Source: RV Chooser analysis of active listings · Methodology
| Forest River XLR Boost 27QBX | Grand Design Momentum 351M | |
|---|---|---|
| Active listings | 10 | 8 |
| Median asking price | $35,200 | $60,250 |
| Middle 50% price | $27,225–$39,075 | $56,175–$80,000 |
| Median mileage | 0 | 0 |
| Median model year | 2020 | 2019 |
Browse used Forest River XLR Boost 27QBX → · Browse used Grand Design Momentum 351M →
Frequently asked questions
Is a used Forest River XLR Boost 27QBX or Grand Design Momentum 351M cheaper?
As of October 24, 2026, the Forest River XLR Boost 27QBX has the lower median asking price ($35,200 vs $60,250 for the Grand Design Momentum 351M), about 42% less.
Which has fewer mileage on the used market?
Median mileage: Forest River XLR Boost 27QBX 0, Grand Design Momentum 351M 0.