# Sportsmobile Express RB 131s

Express RB 131s is a class b floor plan by Sportsmobile.

## Specs (2026 model year)

| Spec | Value |
| --- | --- |
| Length | 18 ft 8 in |
| Sleeps | 2 |

## Model years

2026. Year-specific specs: `https://rvenvy.com/class-b-motorhomes/sportsmobile/express/rb-131s?year={year}`

## Overview

The Sportsmobile Express RB 131s is built around insulation in a way most Class B vans simply aren't. Wool-lined walls, doors, and ceilings deliver zero outgassing and natural mold resistance, while radiant barrier foil and arctic insulating panels on the windshield and doors let you camp comfortably in heat or cold. The galley comes ready to go with a Norcold 12V compressor fridge, a pull-out faucet sink, and a 3,000-watt true sine inverter charger with Bluetooth monitoring, all backed by a 200Ah AGM battery system and a 100V/50A MPPT solar controller. Seating and sleeping arrangements are genuinely flexible, with dinettes, gauchos, or couches available in custom lengths so the RB 131s can be configured around how you actually travel.

## Inventory

No units currently for sale. Search similar inventory: https://rvenvy.com/inventory

Floor plan diagram: https://images.rvenvy.com/59beef484a4332b602eb2b9279fe15008120d2151bfad79bc0ad7f649107e0b5/1024.webp

Canonical page: https://rvenvy.com/class-b-motorhomes/sportsmobile/express/rb-131s