| Also known as | BOX00023, JRC 3576A |
| Listed in parts books | Not catalogued by year yet |
BOYER IGNITION BOX ONLY -TRI, BSA, NOR. - 12V TWINS MK4
Boyer MK4 12V electronic ignition control box for Triumph, BSA, and Norton twins, sold separately from the rest of the kit.
This is the electronic control box for a Boyer Powerbox ignition system, the MK4 12V unit, sold on its own without the rest of the kit. It's the sealed module that replaces the old mechanical points and condenser setup with electronic triggering, and it's built to work across Triumph, BSA, and Norton twins that share the 12V electrical layout this system was designed around.
Read more
If you're upgrading from a points-based system or replacing a failed box in an existing Boyer setup, this is the part that does the switching - the brains of the operation, so to speak. It comes up in our records under a couple of different reference numbers (BOX00023, JRC 3576A) but it's the same physical unit.
Since this is sold as the box only, make sure you're not also missing the rotor, stator, or wiring that the rest of a full Boyer kit includes - if you're not sure what you've already got on the bike, give us a call before ordering.
Sorry if we got something wrong here. If you think this information isn't correct, .