THE BIKE ARM ADAPTER NOW AVAILABLE!
Developed alongside people with limb differences, the Bike Arm Adapter makes new riding experiences possible.
Ready to ride? Connect with a Form5 Ride Guide to explore compatibility, submit your measurements, and find the right fit.
AVAILABLE FOR KIDS AGES 5-12
Teen or adult rider? Join our list for updates on expanded availability in 2027.
Freedom to Ride. A Fit That Starts With You.
Around the neighborhood. Time outdoors with family. New places to explore.
The Form5 Bike Arm Adapter helps people with below-elbow limb differences experience the freedom of cycling.
With multiple socket options, interchangeable components, and personalized guidance from our team, finding the right fit starts with you.
A Fit That Starts With You
The Bike Arm Adapter offers three socket sizes with interchangeable cups to accommodate different residual limb lengths and circumferences. Its modular design allows families to purchase replacement sockets as young riders grow, without replacing the entire adapter.
Our team helps determine the right size and configuration based on your measurements.
Freedom to Move
A ball-and-socket design allows for natural arm movement while riding. Adjustable components help accommodate different riding positions, giving riders the flexibility to steer, turn, and navigate their surroundings with confidence.
Attaches to Your Bike, Not You
The Bike Arm Adapter connects directly to the bicycle handlebars, not the rider. This design allows riders to move their residual limb in and out of the socket without being strapped or secured to the bike.
Designed for Comfort
Thoughtful details make a difference. Built-in air channels promote airflow, while soft padding provides cushioning between the rider’s residual limb and the socket. Together, these features help create a more comfortable riding experience.
Form5’s Bike Arm Adapter features patented technology developed through years of research and collaboration.
Your Ride Starts Here
Connect with a Form5 Ride Guide to explore compatibility, submit your measurements, and find the right fit.
01
SUBMIT MEASUREMENTS
02
MEET YOUR RIDE GUIDE
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PURCHASE ADAPTER
INTRODUCTORY PRICE
$749
Includes a complete Bike Arm Adapter with your selected socket size and cup configuration.
Plus, a one-on-one consultation with a Form5 Ride Guide to help determine the right fit.
Frequently Asked Questions
Questions Before You Get Started?
Learn more about fit, measurements, and what to expect from your consultation.
What is the Bike Arm Adapter?
The Bike Arm Adapter is an adaptive cycling product designed to help individuals with below-elbow limb differences ride a bike more comfortably and confidently. It connects a fitted socket to the bicycle handlebar and includes an adjustable ball joint that allows the rider greater freedom of movement while steering.
Is the Bike Arm Adapter a prosthetic?
No, the Bike Arm Adapter is an adaptive cycling product designed specifically to help a rider operate a bicycle. It functions as an extension of the bike and creates a connection between the rider’s residual limb and the bicycle handlebar.
Who is the Bike Arm Adapter designed for?
The Bike Arm Adapter is designed for individuals with below-elbow limb differences who want to participate in recreational cycling.
What types of limb differences can use the Bike Arm Adapter?
Those with below-elbow limb differences can use the adapter. Form5 is working to expand the product fit those with to below the wrist and above elbow limb differences.
What bike modifications are required?
The bicycle must have a single-lever brake system that allows both the front and rear brakes to be controlled with one hand. The handlebar grip on the side where the Bike Arm Adapter will be installed must also be removed before installation.
Does the Bike Arm Adapter attach to the rider?
The Bike Arm Adapter’s clamp attaches directly to the bicycle handlebar rather than attaching permanently to the rider. The rider places their residual limb into the fitted socket, which connects to the handlebar clamp.
How does the Bike Arm Adapter adjust as a rider grows?
The Bike Arm Adapter has three socket sizes and interchangable cups that accommodate different residual limb lengths and circumferences. Its adjustability allows the product to grow with a child rider.
Where can I ride with the Bike Arm Adapter?
The Bike Arm Adapter should be used for recreational riding on smooth, paved, firm, and stable surfaces such as bike paths, sidewalks, and roads designated for bicycle use. It should not be used on dirt trails, sand, gravel, unstable terrain, steep inclines, or in high-traffic areas where rapid stopping or complex maneuvers may be required.
Can I use the Bike Arm Adapter for mountain biking, BMX, or stunts?
No. The Bike Arm Adapter is not intended for BMX, mountain biking, off-road riding, jumps, stunts, or other high-impact or extreme cycling activities.
How do I order a Bike Arm Adapter?
You can visit our order page here. You’ll find more information on how to install the adapter, and how to measure for the right fit. By submitting your measurements, you can then schedule a consultation with Form5 Ride Guide to ensure that all measurements are correct for the rider before placing your oder.
Have a Question? Let's Talk!
Not sure if the Bike Arm Adapter is the right fit? Our team is happy to answer your questions and help you explore your options.