# Outdoors RV Creek Side Mountain Series 21MKS

21MKS is a travel trailer floor plan by Creek Side Mountain Series (Outdoors RV).

## Specs (2026 model year)

| Spec | Value |
| --- | --- |
| Length | 26 ft 10 in |
| Sleeps | 7 |
| Slide-outs | 1 |
| Dry weight | 6,100 lbs |
| GVWR | 8,250 lbs |

## Model years

2026. Year-specific specs: `https://rvenvy.com/travel-trailers/outdoors-rv/creek-side-mountain-series/21mks?year={year}`

## Overview

This four-season travel trailer stands out with its extreme weather construction, featuring triple-layered roof insulation and a fully enclosed heated underbelly for year-round camping. The rugged build includes off-road X4 suspension with MorRyde components and KYB shocks, paired with a cambered off-road chassis for serious adventure capability. Inside, you'll find thoughtful touches like a single basin farm sink with protective grid, vaulted ceilings that add 5 inches of headroom, and ultra leather furniture throughout the living space.

## Inventory

6 units currently for sale priced $49,990 to $54,700: https://rvenvy.com/travel-trailers/outdoors-rv/creek-side-mountain-series/21mks/inventory

Floor plan diagram: https://images.rvenvy.com/c2967bfb76f5311eded0bef9ee083cfba6664924b1b703006d1d02e86731dd2d/1024.webp

Canonical page: https://rvenvy.com/travel-trailers/outdoors-rv/creek-side-mountain-series/21mks