Kleinn is the world’s only manufacturer that engineers and builds a full line of Direct Fit Train Air Horn and Onboard Air Systems. No cutting, drilling or welding is needed for installation, and we pride ourselves on our detailed, easy to follow instructions for a pain-free installation.

For Kleinn to be able to accomplish this, we need people like you to test fit our kits on your vehicles. As you may know, the same year vehicle can have different factory options that will affect fitment of aftermarket accessories. Once we engineer a kit and install it on a few test vehicles here in Tucson, Arizona we also want to test our kits on other vehicles before we release them to the public. The goal is to test fit as many different trim and body variations as possible.

2006-2021 MERCEDES SPRINTER – Onboard Air™ System

Ford ranger 2019-2021 – Onboard Air™ Systems & Train Horn

2016-2018 Colorado & Canyon – Onboard Air™ Systems & Train Horn

Toyota Tacoma 2015-2019 – Onboard Air™ Systems & Train Horn

Nissan Titan 2016-2018 – Onboard Air™ Systems & Train Horn