Boyer Micro Power Ignition System – 12v Twins BSA, Triumph

Part Number : KIT00281 Categories: , ,
(9 customer reviews)

£ 171.00 +VAT if applicable

Boyer Bransden MKIV Ignition Kit – 12v Twins BSA, Triumph

Only 2 left in stock

5.00 out of 5
Part Number : KIT00281 Categories: , ,

12v Boyer Bransden Micro-Power MKIV Ignition Kit for BSA & Triumph Twins and Royal Enfield Interceptor

This kit negates the need for the auto advance unit, points, points plate and condensers which can be the cause of running problems. This kit contains everything needed for the conversion.

Micro Power Kit consists of;

a) Transistor Box (BLUE box with wires)
b) Stator Plate (round printed circuit board with two coils)
c) Magnetic Rotor (round plated steel unit with two magnets)
d) 1.25" x 0.25" BSF bolt (Norton)
e) 1.25" x 0.25" UNF bolt (Triumph)
f) Plastic strap
g) Coil positive earthing wire, red 1ft.
h) Terminals: 4 female spades, 1 piggyback spade, 2 male bullets & 1 ring.
I) Dual output digital ignition coil, bolts/nuts/washers, h.t.clips, boots & tie-straps
j) Two NGK suppressed plug caps, 1metre h.t. lead

Suitable for positive or negative earth, points on side Models

  • Triumph Bonneville/Tiger/T100/T110/T120 /T140/140V/140E
  • BSA A50/A65
  • Royal Enfield Interceptor


Manufacturers Description

The Boyer Bransden range of Analogue MKIII ignition units are being progressively changed to improved MKIV versions. The changes are designed to improve the timing stability if engine starting with a very low or variable battery voltage. The design changes are internal and do not affect the external appearance of the unit. Identified by the 'MKIV' caption on the label the new units are fully interchangeable with previously produced MK3 and MK1a units, and offer improved performance for both electric and kick start machines. All Digital and Power designs will remain as before.

9 reviews for Boyer Micro Power Ignition System – 12v Twins BSA, Triumph

  1. Mike B. (verified owner)

    Good service

  2. Ole L. (verified owner)

    Works well

  3. Dominic W. (verified owner)

    Easy to install with little adaption of the wiring. Improves starting and running. I've fitted these kits to both my 1970 BSA Thunderbolt and my 1978 Triumph T140e.

  4. Tim C. (verified owner)

    Excellent service and a first class product. Easy to fit and works a treat. Thank you.

  5. Guest (verified owner)

    Ignition set as described, top quality, very fast delivery to Germany.

  6. simon s. (verified owner)

    The Boyer Micro Power Ignition system has been set up on my 1969 MK2 Interceptor. Everything was easy to fit without any problems and the instructions are easy to follow. I am looking forward to finishing the bikes rebuild and running it with this new system.

  7. Alfons H. (verified owner)


  8. John H. (verified owner)

    I haven’t fitted yet but happy with the purchase so far the service for ordering and delivery was really good

  9. William E. (verified owner)

    I`m unable to submit a review on the parts purchased during recent months as the machine is not yet in working order.At present I can say that I have had first class service in supply of parts towards renovation of a BSA Lightning.

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