The KTM RC 390 headlight bulb specifications include H9 size for high beam and H11 size for low beam applications. The replacement chart covers 2015 through 2022 model years with corresponding bulb size data.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The H11 bulb is the most widely used type across the KTM RC 390 specifications, appearing in both the high beam and low beam positions across multiple model years.
The H11 is a single-filament halogen bulb operating at 12V and 55W, fitted with a PGJ19-2 base, and is rated to the ECE standard, which governs lighting equipment across Europe and numerous other markets worldwide, with additional approval for use in the United States.
The H9 bulb is specified for the high beam position on the 2020 and 2022 RC 390. It is a single-filament halogen bulb operating at 12V and 65W, fitted with a PGJ19-5 base, and carries the same ECE and US approvals as the H11.
Although the H9 and H11 are both single-filament halogen bulbs sharing the same 12V operating voltage and a visually similar form, their base types differ. The H9 uses a PGJ19-5 base while the H11 uses a PGJ19-2 base, and their wattage ratings also differ at 65W and 55W respectively, making the two types non-interchangeable.
The high beam position on the KTM RC 390 changed from H11 to H9 between the 2019 and 2020 model years, while the low beam position retained the H11 specification across all listed years from 2015 through 2022.
The 2015-2019 RC 390 used H11 bulbs in both the high beam and low beam positions, meaning both positions shared the same bulb type during those years.