Description

The Motor Cabinet Jig, commonly known as the “Dolphin,” is an essential tool for anyone building an e-bike with a Bosch Gen 4 drive unit. Precision-crafted in the USA from high-strength 4130 chromoly steel, this jig simplifies the process of locating the motor cabinet on your frame with pinpoint accuracy—no complicated fabrication needed. Simply position the jig, align your motor cabinet, and weld with confidence. This tool eliminates guesswork, saves time, and ensures a professional, hassle-free setup every time. If you’re serious about building a quality e-bike, this jig is a must-have investment.