The Bimota SB8 uses P21W bulbs for both front and rear turn signal applications, with this size remaining consistent across the model line. The replacement chart covers 2000 to 2001 production years and documents the bulb specifications for turn signal positions.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Bimota SB8 uses the P21W bulb in both its front and rear turn signals across the 2000-2001 model years.
The P21W is a single-filament bulb, meaning it serves one lighting function only, which makes it suited to dedicated turn signal housings rather than combined stop/tail applications.
P21W bulbs operate at 12 volts and consume 21 watts, placing them in the standard range for automotive and motorcycle turn signal circuits.
The P21W uses a BA15s bayonet base, where "BA15s" denotes a single-contact bayonet fitting with a 15mm base width. A double-contact variant, the BA15d, is not interchangeable with this fitment.
The P21W is governed by ECE regulations, a lighting standard recognized across Europe and numerous other markets worldwide.
Because the SB8 uses the same P21W bulb in all four turn signal positions, front and rear replacements draw from the same bulb type.