# Sportsmobile Express RB 113s

Express RB 113s 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-113s?year={year}`

## Overview

The Sportsmobile Express RB 113s punches well above its footprint with insulation that most Class Bs can only dream about, combining cork underlayment, wool-lined walls and ceiling, radiant barrier foil, and magnetic arctic panels for the windshield and doors. The galley is genuinely functional, with a Norcold 12V compressor fridge, pull-out faucet sink, and both a fresh water tank and city water hookup. A 3000-watt true sine inverter with Bluetooth monitoring and a smart MPPT solar controller mean you're not glued to a hookup. The full bath and flexible seating options, including convertible dinettes and gauchos that roll out on steel tracks, round out a build designed to be lived in rather than just slept in.

## Inventory

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

Floor plan diagram: https://images.rvenvy.com/df21a97af4bd369b34e30cee0b529a0cbea0da5681aa42899fe54a96e24cd783/1024.webp

Canonical page: https://rvenvy.com/class-b-motorhomes/sportsmobile/express/rb-113s