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Nothing Prohibits a Kit. The Result Is What Counts
Florida does not ban conversion kits, and fitting one is not itself an offense. The statute does not ask how a machine came to be what it is — it asks what it is.
Fla. Stat. § 316.003(23) requires an electric bicycle to have fully operable pedals, a seat or saddle for the rider, an electric motor of less than 750 watts, and to meet one of the three classifications in (a), (b), or (c). A converted bicycle that satisfies all of those is an electric bicycle, with every right that follows under § 316.20655. One that does not is not, whatever it started life as.
Two elements catch conversions most often. Kits are commonly sold at 750 watts, 1,000 watts, or more — and the statute requires less than 750. And a kit that assists beyond 28 mph satisfies none of the three class definitions.
Modification, Labels, and Section 316.20655(4)
Fla. Stat. § 316.20655(4) provides that “a person may not tamper with or modify an electric bicycle so as to change the motor-powered speed capability or engagement of an electric bicycle, unless the label indicating the classification number required in subsection (3) is replaced after such modification.”
Read carefully, that is not a prohibition on modification. It is a prohibition on modifying without updating the label. The statute contemplates that a machine's classification may change and requires the record on the machine to change with it.
§ 316.20655(3) puts the original labeling obligation on manufacturers and distributors: since January 1, 2021 a permanently affixed label in a prominent location showing the classification number, top assisted speed, and motor wattage. A private owner converting their own bicycle is not a manufacturer, but the interaction with (4) is why documenting a conversion matters.
There is a separate operational requirement that conversions frequently fail. § 316.20655(6) requires an electric bicycle to “operate in a manner so that the electric motor is disengaged or ceases to function when the rider stops pedaling or when the brakes are applied.” A kit fitted without brake cut-off sensors may not comply — which is both a legal problem and a genuine safety one.
David I. Shiner, Esq.
Founder, Shiner Law Group · AV Preeminent® rated · Florida Bar member since 2002
David I. Shiner founded Shiner Law Group and has been a member of The Florida Bar since 2002. He is a graduate of Nova Southeastern University’s law school and holds an AV Preeminent® rating from Martindale-Hubbell. The firm represents injured people across Florida from offices in Boca Raton, West Palm Beach, Fort Lauderdale, Fort Pierce, Orlando, Wellington, and Belle Glade, and handles these cases on a contingency basis with free consultations and no attorney’s fee unless there is a recovery.
The Problem Nobody Selling a Kit Mentions
A conversion adds power and weight to a bicycle whose brakes, fork, wheels, and frame were specified for neither. That is the real risk in a kit, and it is a product question rather than a legal one until something breaks.
The federal requirements still apply to the machine. Fla. Stat. § 316.20655(5) requires an electric bicycle to comply with the CPSC requirements at 16 C.F.R. part 1512, and 16 C.F.R. § 1512.2(a)(2) brings low-speed electric bicycles inside that part's definition of “bicycle.” Among those requirements, § 1512.5(a) requires front- and rear-wheel brakes or rear-wheel brakes only, and § 1512.5(b)(1) sets a stopping distance no greater than 4.57 m (15 ft) from the test speed.
- Rim brakes specified for a 25-pound bicycle now stopping a 55-pound machine at higher sustained speed.
- A steel or aluminium fork carrying a front hub motor's torque, which loads the dropouts in a direction the fork was never designed for.
- Wheels built for pedaling loads absorbing motor torque.
- Frame mounting points for a battery pack that the frame was not designed to carry.
- No brake cut-off, so the motor keeps driving under braking — contrary to § 316.20655(6).
Injured on a Converted E-Bike?
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Who Is Responsible When a Kit Fails
A conversion widens the field of potential defendants rather than narrowing it. Fla. Stat. § 768.81(1) defines a “products liability action” to cover claims based on strict liability, negligence, breach of warranty, or nuisance theories for a defective product — and a kit is a product.
| Potentially Liable Party | Typical Basis |
|---|---|
| The kit manufacturer | Defect in the motor, controller, battery, or wiring, or inadequate instructions and warnings about the bicycles a kit is suitable for. |
| The kit seller or marketplace | Selling a product in a defective condition, or misrepresenting what it produces — a kit advertised as producing a compliant Class 3 machine when it does not. |
| Whoever fitted it | A shop that installed a kit incorrectly, or without brake cut-offs, or onto a frame unsuited to it. |
| The bicycle manufacturer | Rarely, and usually only where the original component itself was defective rather than merely overloaded. |
| The rider | Under Fla. Stat. § 768.81(2) a rider's own share reduces recovery, and § 768.81(6) bars it entirely above 50 percent. A self-fitted kit is where that argument starts. |
If you were hurt on a converted machine, the instruction is the same as for any mechanical failure and slightly more urgent: do not undo the conversion. Removing a kit or restoring a limiter after a crash is far worse than the modification was. Preserve the machine, the kit packaging and instructions, and every receipt. See evidence that proves the case.