Introduced as a replacement for the A7, the unit construction A50 was virtually a detuned 650cc twin.
For general parts, please see the product indexon the left.
The Boyer Bransden MKIV is a contactless ignition-triggering system featuring an electronic advance and retard. Designed to fit all British unit-construction singles and twins, this system is powered by your Lucas-style stator. Twins require two 6v coils wired in series, while the Singles take a 12v coil. The Boyer also retains the original capacitor, rectifier and zener diode, all three of which can be replaced by a single unit, the solid-state Sparx box. The MkIV is the best Boyer choice for off-road, battery-less use. Special order, takes two days.
Made from high quality butyl rubber, your choice of Kenda or IRC brand. Select size. Many others available, if you don't see what you need, please ask.
For AMC, BSA, Triumph and Villiers, with your choice of a one-inch ("MX") or three-inch ("trials") swingout. These are especially nice, as they fold-up flat against the engine, so they don't interfere with your leg while riding. The trials version provides clearance for rearset footrests or exhaust pipes. Burman gearbox kick lever available by special order only.
These are a cast-aluminum copy of our favorite lever. While much more affordable than the originals, they are not nearly as durable. Their excellent leverage ratio makes for an easy clutch-pull. Sold individually, includes cable adjuster.
New-production genuine UK-made Doherty chromed-steel control levers, complete with screw-in adjusters. Sold individually.
Very nice replicas of the Doherty steel levers. On the 7/8" version, the perch fasteners are allen-heads, but the 1" levers have slot-head screws. Sold as a pair.
Aluminum-alloy number plate is finished with a beaded edge. Undrilled, no mounting hardware included.
Nice-quality plastic oval with a beaded edge. Available in six colors.
The most-common British petcock size is 1/4 British Standard Pipe (measures .520"x 19tpi). This chrome fuel tap has no standpipe, and takes a 1/4 BSP nut on the fuel-line side.
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