Description
New and improved design
Our CDi units are hand built by technicians who are passionate about ensuring your motorcycle performs as well, if not better than when it was new.
This is the latest version, refined and improved through over ten years of continuous production and development. It replaces both the “A (21119-025)” and “B (21119-019)” units used on the 1974-1976 Kawasaki H1E, H1F, KH500 models. Often decals show numbers: X6T31371 and X6T31372
Our combined CDI unit features highly effective arc quenching circuitry to reduce flashover on the distributor. Unlike the original it does not short most of the spark energy to ground.
Plug and play part, does not require the separate smaller unit to be connected.
One year warranty from date of purchase.
Made in England
Note: This ignition system is an extremely unusual design. Once running, it’s very reliable, but it can be tricky to get working correctly. Correct set-up is vital: source windings must be to spec, the distributor clean with good brushes, and ignition timing set exactly as per the shop manual. We recommend setting the rotor to pick-up clearance to the smallest gap allowed.
Remember a new CDI unit is only one part of the system. If fitting a replacement unit doesn’t cure the fault, or changes the symptoms, other ageing components may need repair or replacement, especially on systems over 20 years old. The problem will almost always lie in an old part that hasn’t yet been renewed or has been badly repaired, or out of OEM spec.
With over a decade of experience designing, repairing, and manufacturing ignition systems, our team has published a free guide to troubleshooting ageing CDI ignitions. You can find it on our technical support page.
