2026 Keystone Montana High Country381TB

The 381TB is the High Country built for a big or multi-generational family. It carries two full baths and two bedrooms — a front king suite and a rear bedroom with its own private entry — with a queen loft above the rear bedroom for two more, all wrapped around a center living area opened up by large slide-outs. The kitchen runs a coffee hutch and an island with dual extendable countertops, and the bath adds a skylight shower. It sleeps ten on four slide-outs in a 42-foot-5-inch body, on 7,000-pound Dexter Gladiator axles, a MORryde CRE-3000 suspension, Ground Control six-point electric auto-leveling and a 12-inch I-beam.

Published figures put the dry weight at 14,364 pounds — the heaviest of the profiled plans — and the dry pin at 2,705, and adding the 2,254-pound cargo capacity gives a 16,618-pound GVWR. That cargo number is the tightest of the profiled range, so watch payload closely: a full family plus water and gear eats into 2,254 pounds quickly. A single 15,000-BTU Coleman Mach Quiet Series air conditioner with a heat pump, a 35,000-BTU furnace, an on-demand tankless water heater and generous 75/135/98-gallon fresh/grey/black tanks are standard. At a starting MSRP around $108,800, with street pricing below placard, the 381TB is the two-bath High Country for large families — firmly one-ton territory once loaded.

Montana High Country is Keystone's lighter luxury fifth wheel, below the full-size Montana and cross-shopped against Grand Design's Reflection and Solitude, Forest River's Cedar Creek and Sabre, Alliance's Avenue and Jayco's Pinnacle. The 2026 line runs to eleven floorplans; the six broadest-appeal layouts are profiled in full, and the 381TB on this page is highlighted. The full lineup, including the catalogued plans, is on the line hub.