Retrofit Page

Calfee Eletric Assist Retrofit FAQ

Does my bike qualify for a retrofit?

Rim Caliper brakes will most likely need a front wheel retrofit along with a specific fork.

Disc brake with 135mm rear spacing we recommend a rear wheel retrofit.

Tandem bikes can be retrofitted with a rear motor system but must have 135 mm spacing.

How much does an Electrofit cost?

For single bike retrofits the starting price is ~$1800. Often the deciding factor being how much battery capacity you need and if there will be other customization.

For tandems the starting price is ~$2250 with the deciding factor being how much battery capacity you need and if there will be other customization.

How much range can I expect?

Retrofit Type  Typical Range
Single Bike  40 miles
Tandem  50 miles
Custom Build  To Specification

How do I get my retrofit started?

Please follow the link to our retrofit interest form, we check the form daily and will reply promptly.

Retrofit Interest form

Once we receive your information, we will provide an estimate based on your bike and range requirements.

How long does it take once you receive my bike?

Once we have your bike in house and your deposit we will endeavor to meet a reasonable timeline.

Retrofit Type  Turnaround Time
Single Bike  4 to 6 weeks
Tandem  6 to 8 weeks
Recumbent Tandem  6 to 8 weeks
Custom Build  Quote

What does the retrofit equipment look like?

The retrofit starts off with an expert wheel build including a recommended rim. Based on your bike we recommend motor and controller solution and pack the system into our custom cycling bag.

Carbon Electric Wheel
Tandem rated Calfee Carbon wheel build with Gmac motor
Calfee carbon wheel build
Calfee carbon wheel and fork for assist with Bafang 311 motor.
Electric Assist System Bags
Top: Cycling top tube bag for tandem assist systems. Bottom: Single bike top tube bag for assist systems.

What comes with a Calfee retrofit?

Items differ for single and tandem bike. Bag is for tandems bikes. Battery shown is 4xLigo or 400 watt hours capacity

What is the capacity of the battery used?

The single bike system can hold ~500 watt hours of capacity in our frame bag. Our tandem system starts at 600 watt hours and can carry up to 1000 watt hours of capacity. Keep in mind the system is modular so you can carry more or less capacity depending on your range requirement.

Calfee Design 1-800-965-2171