# Sportsmobile Promaster 121S

121S is a class b floor plan by Promaster (Sportsmobile).

## Specs (2026 model year)

| Spec | Value |
| --- | --- |
| Length | 19 ft 8 in |
| Sleeps | 2 |
| Slide-outs | 0 |

## Model years

2026. Year-specific specs: `https://rvenvy.com/class-b-motorhomes/sportsmobile/promaster/121s?year={year}`

## Overview

This compact Sportsmobile proves you don't need to sacrifice comfort for maneuverability. At just 20 feet, it fits into standard parking spaces while still offering a full bathroom – a luxury many shorter Class B rigs can't accommodate. The efficient layout sleeps two and delivers the legendary Sportsmobile build quality that's made them a favorite among van life enthusiasts for decades.

## Inventory

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

Floor plan diagram: https://images.rvenvy.com/1ca26d38c922ae2f7ff9af5c4bd977d8d3b39bf713f6b2fbd68339efa7670332/1024.webp

Canonical page: https://rvenvy.com/class-b-motorhomes/sportsmobile/promaster/121s