# Keystone Montana 3901RK

> Bath and a half, front bath, rear kitchen, dual vanity, walk-in closet

3901RK is a fifth wheel floor plan by Montana (Keystone).

## Specs (2026 model year)

| Spec | Value |
| --- | --- |
| Length | 42 ft 4 in |
| Sleeps | 4 |
| Slide-outs | 5 |
| MSRP | $133,778 |

## Model years

2026, 2025, 2024, 2023. Year-specific specs: `https://rvenvy.com/fifth-wheel-trailers/keystone/montana/3901rk?year={year}`

## Overview

The rear kitchen layout is the centerpiece here — anchored by a farmhouse sink, solid surface countertops, and an oversized deep stainless steel sink, it's a genuinely functional cooking space rather than an afterthought. Up front, the King bed suite earns the "mansion" comparisons owners love: a dual vanity, walk-in closet with washer/dryer prep, and a dedicated half bath keep the bedroom area from feeling like a compromise. Five slide-outs open things up considerably, and the 5K BTU fireplace, La-Z-Boy furniture package, and backlit crown molding give the living area a residential feel that's hard to argue with. Details like the MORryde CRE3000 suspension, hydraulic main-level slideouts, and central vacuum round out a build that's clearly aimed at long-term or full-time use.

## We like

- Oversized fridge
- Large half bath
- Large walk-in closet

## Things to consider

- Living area feels cramped with rear kitchen wall

## Floor plan tags

bath and a half, dual vanity, walk-in closet, front bath, rear kitchen

## Inventory

80 units currently for sale priced $65,699 to $109,995: https://rvenvy.com/fifth-wheel-trailers/keystone/montana/3901rk/inventory

Floor plan diagram: https://images.rvenvy.com/2ba58becb3b7c54e91fa899a5dd6eae82e932f8dff5aad7cf3896cecd8918f73/1024.webp

Canonical page: https://rvenvy.com/fifth-wheel-trailers/keystone/montana/3901rk