Boyer Bransden Electronic Ignition Black Box - MKIV A10 Nuts have a thread pitch

Nuts have a thread pitch of 26 (CEI)

376/068 or 376/069

Amal Concentric carburetors where fitted to most vintage British motorcycles including Triumph

*****Please note that this Chain fits All Triumph 750 Twins & Models from 1973-1982

Replaces part number 70-5315

Boyer Bransden Electronic Ignition Black Box - MKIV A10 Nuts have a thread pitch*Just Arrived!* New! Boyer Bransden Replacement Black Box For Triumph & BSA Twins! Is your black box outdated? Malfunctioning? Or it accidentally got fried? Well instead of buying a new electronic ignition system again, just replace the black box! Yes we know, you thought you had to buy a whole new kit! Save the money! Works with Triumph & BSA Unit Twins running 12 volt. Although the box states "Triumph & BSA Twins" this module will work on 12 Volt