With the most storied legacy in the industry, Keystone Montana is the pinnacle of luxury fifth wheel RV travel. Built on a robust 12" I-beam frame, the 2021 RV models feature the award-winning Modern Maple interior design, hardwood cabinetry and stiles, CX3 climate control, and the optional Super SolarFlex energy system—the most technically advanced RV solar power system on the market today.