California Emissions Notice

The State of California regulates motorcycle aftermarket parts that can affect emissions. Under California Air Resources Board (CARB) rules and state law (including California Vehicle Code § 27156 and Title 13 of the California Code of Regulations, the sale or use of many emissions-related aftermarket parts for motorcycles is prohibited unless they fall into one of the following categories:

• Replacement Parts: Aftermarket parts that are functionally identical in all respects affecting emissions (including durability) to the original equipment part they replace. :contentReference[oaicite:2]{index=2}
• Executive Order (EO) Parts: Parts for which CARB has issued an Executive Order, certifying they do not reduce the effectiveness of required emission control devices. :contentReference[oaicite:3]{index=3}
• Competition Use Only: Parts that have not been exempted for highway use may only be used on vehicles that are used exclusively for closed-course competition (not on public highways). :contentReference[oaicite:4]{index=4}

For example, part installations that remove or bypass a catalytic converter or oxygen sensor system typically require a valid EO to be legal for street use in California. :contentReference[oaicite:5]{index=5}

Please note:
• Dealers and installers in California must maintain records of sales/installations of non-exempt parts (date of sale, purchaser name/address, vehicle model) for at least four years. :contentReference[oaicite:6]{index=6}
• The absence of a valid EO or label may mean that the installation is subject to enforcement under California law.

If you have any questions about legality of a specific part for use in California, we encourage you to consult the part manufacturer and verify whether the part carries a valid CARB Executive Order.