# Keystone Montana 3857BR

> Front bedroom, rear living area, loft, desk, mid bunk

3857BR is a fifth wheel floor plan by Montana (Keystone).

## Specs (2026 model year)

| Spec | Value |
| --- | --- |
| Length | 40 ft 11 in |
| Sleeps | 8 |
| Slide-outs | 4 |
| MSRP | $130,688 |

## Model years

2026, 2025, 2024, 2023. Year-specific specs: `https://rvenvy.com/fifth-wheel-trailers/keystone/montana/3857br?year={year}`

## Overview

What makes the 3857BR stand out is the way it stacks so many distinct spaces without feeling like a floor plan Tetris puzzle — a rear living area with fireplace, a mid-ship zone that flexes between office and den, a bunk room with a loft above accessed by stairs, and a front King bed suite, all in one unit. The kitchen island with farmhouse sink and solid surface countertops anchors the living end nicely, and the large pantry helps offset the tighter counter space. Washer/dryer prep, an outdoor kitchen, and the Lippert leveling system make extended stays genuinely practical. Keystone backs the structure with a 3-year limited warranty, and the MORryde suspension package — especially with the optional independent suspension upgrade — does real work if you're covering miles to get to your site.

## We like

- Multi-purpose mid-room
- Large pantry
- Loft over bunks

## Things to consider

- Limited bathroom storage
- Limited living area storage
- Minimal kitchen counter space

## Floor plan tags

loft, desk, office, rear living area, front bedroom, mid bunk, mid office, mid den

## Inventory

27 units currently for sale priced $62,999 to $154,900: https://rvenvy.com/fifth-wheel-trailers/keystone/montana/3857br/inventory

Floor plan diagram: https://images.rvenvy.com/911da20fcdfb17385d33b771695c1871de5a7b1a1ca929ad7b7ccf2046fc1fc1/1024.webp

Canonical page: https://rvenvy.com/fifth-wheel-trailers/keystone/montana/3857br