Light Rail Replacement Battery Compatibility:Fits most bikes with stems

Compatibility:Fits most bikes with stems that use 2–4 bolts to secure the handlebars

Most bike lights make you choose: see or be seen

• Built in mounting strap is easy

Includes:Comes with a Light Rail Interface piece that connects to your Light Rail system—perfect for setting up a second bike without removing your main mount

but be prepared for anything with this replacement that you can easily install yourself

Light Rail Replacement Battery Compatibility:Fits most bikes with stemsThis is a user replaceable Lithium Ion battery for the Light Rail bike light bar. We believe in a customer's right to repair. While we've taken care to design the Light Rail to preserve the longevity of the battery, it's still a part that will eventually degrade under normal usage. The factory installed battery should last for several years of heavy use, but be prepared for anything with this replacement that you can easily install yourself.