# Sportsmobile Promaster 137S

137S is a class b floor plan by Promaster (Sportsmobile).

## Specs (2026 model year)

| Spec | Value |
| --- | --- |
| Length | 17 ft 9 in |
| Sleeps | 2 |
| Slide-outs | 0 |

## Model years

2026. Year-specific specs: `https://rvenvy.com/class-b-motorhomes/sportsmobile/promaster/137s?year={year}`

## Overview

Built on the popular Ram ProMaster chassis, this compact Class B delivers the maneuverability and fuel economy that urban adventurers love. The 18-foot length makes parking a breeze while still accommodating a full bathroom and Queen bed for two. Owners consistently praise the ProMaster's easy driving characteristics, tight turning radius, and surprising pep from the gas engine.

## Inventory

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

Floor plan diagram: https://images.rvenvy.com/e0d97fe11d55d40216b62f8cc943324ba0b974ad7ea3363fe82c866f9a7066d9/1024.webp

Canonical page: https://rvenvy.com/class-b-motorhomes/sportsmobile/promaster/137s