Check the listing for details. AJS Model 20 model 31 electronic ignition Boyer Distributor 18D2 Distributor 12V. Color: BLUE, Condition: New, Made in United Kingdom. Listed at 315.13 USD. Here you have a Brand new Boyer Bransden, Micro-Power high power 12 Volt electronic ignition system. This kit is for any Twin cylinder motorcycles, equipped with Lucas 18D2 distributor. With over 40 years behind them, made in England, Boyer is considered by most to be "the choice" when it comes to electronic ignition systems. This kit fits any Twin cylinder motorcycles, equipped with Lucas 18D2 distributor such as: This kit may fit other models but please check your distributor model and bike set-up first. We have fitted Boyer Bransden kits to a huge number of our bikes over the years, and they have always been easy to fit, and a wonderful improvement. At CPC we will only ever sell products we have tried, tested and would recommend. Please direct any technical questions directly to Boyer.