XPA – Xtreme Power Assist

The Xtreme Power Assist adds the smooth, easy control of electric power-assisted steering to a wide range of popular boats. For instance, pontoons, runabouts, RIBS, aluminum fishing boats and center consoles. Best of all, this is an affordable, easy-to-install solution that offers a more enjoyable driving experience.

Let Pier 21 Marine be your one-stop shop for all your boating needs. Because, we have a state-of-the-art facility, our technicians are factory trained and we have the best warranty in the business.

Power Assist on Wildlife and Fisheries Boat


Significantly reduced steering effort. As a result, it provides a car-like driving experience for mechanically steered boats.

Engineered to fit a wide range of single-engine, mechanically steered outboard boats from 90-200HP.

Integrates with any existing SeaStar rack or rotary cable steering system. Therefore, there is no need to install new steering to take advantage of this new technology.

Designed as a self-contained, plug-and-play system that easily mounts to all major outboard brands. To clarify, it integrates with the boat’s existing mechanical steering in less than 30 minutes.

Built-in Fail-Safe System automatically reverts to mechanical steering in the event of a system failure. S a result, it has a failsafe.

Xtreme Power Assist Specifications


SKU number



Steering Accessories

Legacy Factory Item Number


Product Description

Xtreme Power Assist with 12′ harness


Dimensions product depth, [“]

3 1/4

Dimensions product height, [“]


Dimensions product width, [“]


Dimensions product length, [‘]



Actuation Stroke Length, [“]


Horse Power Rating, [hp]



Dometic XPA – Installation and Operating Manual AMER(en)

Installation and Operating Manual Download

Xtreme Power Assist – Leaflet

Datasheet Download

WARNING This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.

For help with your hydraulic steering check out our steering website.