16 CFR §1512.13 — Requirements for front fork.
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The front fork shall be tested for strength by application of at least 39.5 J (350 in-lb) of energy in accordance with the fork test, § 1512.18(k)(1), without visible evidence of fracture. Sidewalk bicycles need not meet this requirement.