In 2020 we will have converted over 1000 bikes to eBikes

Alvin Carpenter, CEO


Fact: Between our Alameda location and our Sacramento location we are on a trajectory to convert over 1,000 bikes to electric in 2020. That is a lot of bikes, that is a lot of experience. 

Hello, I am Dr. Carpenter, CEO of Island City Bikes, LLC. In 2017 we began the electric bike manufacturing company of Island City Bikes. Instead of using bike frames shipped from China we chose to use existing framesets such as those by Giant, Trek, Raleigh, Diamondback and others. The reasons we chose this approach was because we knew these bikes have already met the high standard of quality each company requires. We would take these framesets and incorporate a Bafang mid drive motor and a long distance lithium battery. The final result was a quality electric bike built with the best components available and yet only one third of the cost of other electric bikes. 

As our reputation grew, people began to bring their existing bikes to us for conversion to electric. We grew for one employee to six employees and opened a second location in Sacramento. Today, converting existing bikes to electric represents 80% of our business. We convert cargo bikes, mountain bikes, leisure bikes, tandems, city bikes, folding bikes, choppers, Burning Man bikes, road bikes, cruisers, adult trikes, and many others. If you are not sure if your bike is a good candidate for conversion just give us call. We keep a large database on all bikes and can tell you in minutes if your bike is a viable candidate. 

Why Convert Your Bicycle into an Electric Bike?

Senior mechanic at Island City Bikes

There are some very compelling reasons to have us convert your existing bike to electric:

1. All electric bikes are simply bicycles with motors and batteries.

If that is the case then it makes sense to convert your current bike to electric as you are already familiar with the bike, you know it fits, and it is a bike you originally chose as your personal bike. It is our job to insure your bike will be a safe, reliable means of transportation after the conversion to electric. All electric bikes are blending new technologies with standard bicycles. It is not magic....but it feels like it when you ride your eBike for the first time. 

2. Electric bike conversion costs 1/3 of a prebuilt electric bike. 

It is far less expensive when you supply your own bike for the installation of the motor of your choice and the battery of your choice. Why pay for the bike portion of an eBike when you already have that in your garage? 

3. Service of your converted electric bike

If an eBike purchased at a bike shop, or online, needs repair it has to be returned to the manufacturer.  All of our conversion bikes are serviced in house. We have the tools, mechanics, electrical technicians, and the knowledge base to fix anything on our conversions. We can replace a motor in 30 minutes and a battery in 5 minutes. 

4. All of our conversions use the Bafang Mid Drive Motor

The Bafang BBS02 750w mid drive motor is the most popular electric bike motor in the world. Bafang Industries produces and sells over 1,000,000 of these motors every year. They are maintenance free, reliable, lightweight (eight pounds), simple to use, and have incredible hill climbing torque. 

5. Our batteries are built for long distance riding. Our smallest battery is 624 watt hours and comes standard on all of our builds. 

All of our conversions meet Federal Guidelines

counting things to do to ebike

It is a categorical imperative that all electric bikes are built according to the standards of both Federal and State Law. It is our responsibility to insure 100% of the bikes we convert to electric adhere to these standards. The laws regulating electric bikes in the US and California are very generous and we feel builders of electric bikes should adhere to these laws to protect their clients.

             The following are a summary of Federal and State laws

Maximum rated power of motor for road use is 750 watts. Motors over 750 watts are for off road use or on private property.

Class I electric bike: This is a bike that is pedal assist and motor cuts off at 20MPH.

Class II electric bike: This a bike that is pedal assist, has a throttle, and motor cuts off at 20MPH.

Class III electric bike: This is a bike that has pedal assist, no throttle, and motor cuts off at 28MPH.

Many centuries, group rides, Grand Fondos, and bike paths are now allowing electric bikes that are Class I and Class III. 

Owners have complete control of the settings on their bike. You can change the speed setting through the display. 

What is the cost of conversion?

woman at the bike shop

The cost of converting your bike to electric is $1499. This includes the most popular, powerful, reliable, maintenance free motor in the world and a long range 48v battery rated at 624 watt hours. We also include a 90 day no fault warrantee on the motor and the battery. "No fault" means you do not have to fill out reams of information to explain why the battery is failing to charge or the motor to run, just give us a call to set up an appointment and let's get you back on the road. 

What it includes: For the best explanation of what it includes see our next page on the conversion process. The entire process can take up to three days as it is very labor intensive. Each employee is trained in bike mechanics, and in the installation methods of motor, battery, cabling, and instruments of the Bafang motor system. 

We have developed proprietary methods of both motor and battery installation. In addition, we have our own machine shop that allows us to mill custom bottom bracket adaptors, and battery spacers. We we do not have a part we make it ourselves to insure your bike is finished on time.

Our consultants include a Senior Engineer at Tesla Motors, a Professor of Federal Law at Golden Gate University. Our employees are former road bike racers, old school mechanics, new to the field  mechanics, in training, and even our CEO has over 50 years of experience working on bikes. 


Isabella, Mechanic


This is Isabella one of our mechanics and former pro racer for Team 7-11.

Incredible electric bike


1917 Motorcycle Track Racer. Bafang BBSHD 1000 watt motor with 48v 20ah battery. Total weight...over 80 pounds.

Solar Powered eBike


Yes, it can be done. He is one of our clients and a very clever builder. Who needs a car when the sun gives you all the power you need...for free.

Scoobie, our neighbor


Scoobie drop in daily for a snackie

Soaking up the sun


This pup found a home on our window sill.

Flying eBike


One of our younger clients testing a bike we built for him. Yikes!

Contact Us

Drop us a line!

(510) 418-1552

Stop in and test one of our electric bikes. All of our ebikes have the Bafang mid drive system

Island City Bikes, LLC

2427 Clement Avenue, Alameda, California 94501, United States

2521 Folsom Blvd., Sacramento Ca 95827



10:00 am – 05:00 pm


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