The Rulebook · draft under verification

E-bike law in Iowa.

The rules at a glance

Max motor power: 750 W
Top assisted speed: 28 mph
Minimum age: 16+ (Class 3)
Helmet: No statewide helmet requirement (any age)
Licence required: No
Registration required: No

The three classes

Class	Assist	Top speed	Throttle
Class 1	Pedal-assist	20 mph	No
Class 2	Throttle + assist	20 mph	Yes
Class 3	Pedal-assist	28 mph	No

107 USD-priced models in the index publish specs within these limits

Official source

What the statute actually says

Enacted by HF 493 (2021); adopts the standard 3-class / <750W framework with Class 1&2 to 20 mph and Class 3 pedal-assist to 28 mph. Under-16 may not operate a Class 3. Iowa has no statewide bicycle/e-bike helmet law. [Source: Iowa Code 321.235B (definitions at 321.1(36A))]. Draft — verify against the current statute before relying on it.

Draft summary under verification — not legal advice. Summaries were ported from Redtail eBikes' rulebook research (pulled 2026-07-03) and are being re-verified against the official sources linked above. State law changes; confirm before you rely on it.