# Sportsmobile Promaster EB 123s

Promaster EB 123s is a class b floor plan by Sportsmobile.

## Specs (2026 model year)

| Spec | Value |
| --- | --- |
| Length | 19 ft 8 in |
| Sleeps | 2 |

## Model years

2026. Year-specific specs: `https://rvenvy.com/class-b-motorhomes/sportsmobile/promaster/eb-123s?year={year}`

## Overview

The Sportsmobile Promaster EB 123s stands out for its obsessive approach to insulation: wool-lined walls, doors, and ceilings pair with cork underlayment, radiant barrier foil, and magnetic arctic panels for the windshield and doors, making it a legitimate four-season van rather than a fair-weather one. The electrical setup punches well above Class B norms, with a 3,000-watt true sine inverter charger, a smart solar MPPT controller with Bluetooth monitoring, and 200Ah of AGM batteries keeping things running off-grid. Seating and sleeping arrangements are flexible by design, with dinettes or gauchos that convert to beds in under a minute using steel roller tracks, and twin configurations that can slide together for a Queen bed. Ram ProMaster owners consistently report the chassis as easy to drive and fuel-efficient, a good foundation for the tight, well-considered Sportsmobile build on top.

## Inventory

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

Floor plan diagram: https://images.rvenvy.com/52653be8f37fa834c7ac83179b3ac6a2b71958b1a6e01f6a758019f57afa2b60/1024.webp

Canonical page: https://rvenvy.com/class-b-motorhomes/sportsmobile/promaster/eb-123s