1963-66 Triumph Terrier, Tiger Cub, T120 with LU425219 Negative Earth Points Replacement Ignition Kit Powerspark


K40 - Powerspark Electronic Ignition Kit for Lucas 18D2 Twin Cylinder Distributor

This ignition kit is designed to replace the points and condenser inside the Lucas 18D2 Twin Cylinder Distributor. 

The Lucas 18D2 distributor was used in many British twin cylinder motorcycles from the the 1950s to 1960s. 

The kit replaces Lucas points sets with part number LU425219. 

It is a NEGATIVE EARTH kit. For Positive Earth you will need our product SKU K40PP.

Motorbikes that use this distributor include iconic classics such as:

1950-60 Norton, 88, Matchless and AJS G12 & G9
1958-1962 Triumph Thunderbird 
1950-60 Norton, Matchless and AJS G12 & G9
1958 Triumph Pre unit 3TA 350 Twin
1960-62 Triumph 500, T100A, TR5AC, T100SC, TR5AR, T100SS
1963-66 Triumph Terrier, Tiger Cub, T120

A Powerspark Electronic Ignition Kit is everything you need to convert your car to electronic ignition.

Fitting is easy and instructions are included with the packaging, as well as available online.

Works from 6 volt to 12 volt applications.

Electronic ignition will give your classic car better starting and smoother running.


- Easy to install
- Replaces troublesome points and condenser
- No visible difference in your engine bay
- Improved starting
- Improved performance
- Improved durability
- Maintenance free


- Our standard kits are to be used with a coil resistance above 1.5 ohms
- Our High Energy kits are to be used with a coil resistance below 1.4 ohms
- Not to be used with copper HT Leads. 

We recommend our silicone HT leads with electronic ignition. Copper HT leads can limit the life of the electronic kit.

Powerspark Electronic Ignition explained in more detail:

The kit uses a simple magnetic trigger and optimises dwell to provide a reliable and consistent spark across the rev range. It is easy to install and maintenance free. 

Each kit comprises a metal bracket where the electronic module is mounted, trigger ring and all wiring. The new electronic bracket mounts exactly where the points and condenser baseplate sat. The kit connects directly to the coil using the wires provided, red to the positive side and black to the negative side. The ignition kit will automatically shut down if the ignition is left switched on without the engine running to prevent component damage.

Powerspark Electronic Ignition Kits are designed to work with a coil resistance above 1.5 ohms, typically 3.0 ohms. 

Do I need a High Energy Electronic Ignition Kit?

Some performance coils operate at a lower resistance and will need the High Energy electronic ignition kit. 

Our High Energy Electronic Ignition Kits are designed to be used with a lower coil resistance of less than 1.4ohms, suitable for a vehicle that requires a more accurate and powerful spark.

Full fitting instructions are included with your kit, and plenty more instructions can be found on our blog.

Add to Cart:

  • Model: K40
  • Shipping Weight: 0.1kgs
  • 26 Units in Stock

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