Honda Motorcycle CBR929RR front turn signal bulbs measure 1034 in size, while rear turn signal bulbs measure 1073 or P21W in size. The replacement chart contains bulb size specifications covering 2000 to 2001 vehicle production years.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Honda Motorcycle CBR929RR front turn signal position uses the 1034 bulb across both the 2000-2001 model years.
The 1034 is an ANSI-standard bulb rated at 12V and 21/5W, featuring a dual-filament design on a BAY15d bayonet base, and is classified as a variant of the 1157.
A dual-filament bulb contains two separate filaments within a single envelope, allowing one position to serve two lighting functions at different wattages, such as running light and turn signal duties.
The rear turn signal position of the Honda Motorcycle CBR929RR differs between model years, with the 2001 year using the 1073 and the 2000 year using the P21W.
Although the 1073 and P21W share the same BA15s bayonet base, they are not interchangeable at the rear turn signal position due to a significant wattage difference: the 1073 is rated at 13W while the P21W is rated at 21W.
The 1073 is an ANSI-standard single-filament bulb rated at 12V and 13W, and is considered a lower wattage variant of the 1156.
The P21W is an ECE-standard single-filament bulb rated at 12V and 21W, with distribution primarily in European and worldwide markets rather than the US and Canada.
The front and rear turn signal positions on the CBR929RR use bulbs from different base types: the BAY15d base at the front and the BA15s base at the rear, making cross-position substitution physically incompatible.
The BAY15d base features offset pins that prevent incorrect installation of a dual-filament bulb, distinguishing it physically from the single-pin BA15s base used in single-filament applications.
The shift from P21W to 1073 at the rear turn signal between the 2000 and 2001 model years represents a change in the applicable regional standard, moving from ECE to ANSI specification at that position.