Calfee Electrofit


Calfee Design has developed the best solution for cyclists interested in electric assist. We will elegantly retrofit a state-of-the-art Pedal Assist to almost any bike, including tandems. Our system is both expandable and customizable. You can run it with as few or as many batteries as you actually need. Unlike other eBikes, you can legally bring these modular batteries on an airplane. In addition, swapping back and forth to your original setup is quick and easy, just remove the top tube bag and replace the powered wheel with your original. The internal wiring stays installed and out of the way.

Prices range from $2500-$4000*

Checkout more electric retrofits examples . . .

Every detail is managed and made to work elegantly together. On Calfee carbon frames, wiring can be internally routed and motor wires guided by expert unobtrusive frame modifications.

About the Motor, Controller and Batteries!

The Calfee eBike Retrofit Service uses 3rd generation front or rear hub motors. Power ranges can be selected from a minimal 250 watts system up to 800 watts for a more robust assist level.

    • A retrofit for any bike, including carbon fiber
    • 250 Watts to 800 Watts variable power
    • Battery system allows for additional capacity
    • PAS via drivetrain sensors
    • Customizable and scalable system

Need more climbing power or would you prefer more top speed? We set the system to your preferences even if you want both!

Retrofit Type  Typical Range  Build Turnaround Time
Single Bike  40 miles  4 to 6 weeks
Tandem  50 miles  6 to 8 weeks
Custom Build  To Specification  Quote

Ready to be energized?

Power is supplied by the modular LiGo battery packs from Grin Technology. A modular battery means your system is lightweight and expandable for more assist range as needed. The number of LiGo cells selected for the system will determine the maximum power and range of the retrofit. Why pay for – and carry more than you really need?

Each LiGo pack is 2.7Ah (610g) and can be combined with additional packs to create a larger capacity battery system. In addition the LiGo battery packs are travel-ready, conforming to FAA passenger aircraft flight regulations.

Prices quotes will range from $2500-$4000 on the typical retrofit depending on options. You send us your garage decoration and we’ll send back a high performance hill flattener.

2019 Calfee Manta eBike retrofit.
2019 Calfee Manta eBike retrofit.

Get the most out of your older bike with an expert Calfee eBike Retrofit.



Calfee Design 1-800-965-2171