• Testing of regulator rectifiers
• Lucas Rita repair and knowledge centre
• Full Testing of Pazon Ignitions
• Full Testing of Tri-spark Ignitions
• Classic bike ignition systems
• Dynamo parts specialists
• Testing of certain CDI Units

At Rex’s, we bring over a decde of expertise in repairing and manufacturing electronics for Kawasaki triples. Aside from new, ready to fit electronics we offer two levels of service:

1. Bespoke restoration – For owners seeking the highest level of originality, with full restoration, plating, and decals where needed.

2. Modern electronics in un-restored cases – For owners who need our modern electronics inside, but to leave the petina finish on the metalwork in tact. Note removing the old electronics may affect the metal finish.

We also offer a wide range of products and services, including new regulator rectifiers, HT ignition coils, stators, and an industry-leading rewind and restoration service. Our team has the specialist knowledge and equipment to test and ensure every part we produce works staright from the box. Where these systems prove stuborn to coax back in to live our experts are on hand via e-mail to advise.

We offer full support for our own electronic ignition systems, providing fast and reliable spare parts and repair services. Our expertise covers a wide range of kits, including XT500, DT250, DT360, DT400, TY175, TY250, and SWM ‘RMK’ models. As the original manufacturer, we have the knowledge and equipment to fully test, troubleshoot, and get you back on track—quickly.

Unlike most competitors, we offer comprehensive servicing, spare parts, and repairs for our own ignition upgrades. All parts currently in production are available as spares, ensuring you’re always covered. Our goal is to get older kits running again, often at less than of the cost of a new system, saving you money wherever possible.

While some of the very early systems are no longer supported, we always strive to explore cost-effective options to help you keep your system running.

We maintain a stock of new parts, ready for quick dispatch, and there are no inspection fees for RMK kits.

– RMK CDi units

– Source windings

– HT coils

– Stator Looms & hardware packs

Made in England

To fully modernise the system, we’ve developed MOSFET voltage regulators that fit inside the original cases (once the old mechanical mechanism has been removed). This allows you to retain all the original parts, essential for maintaining the full value of a restored machine. It’s not just about originality; it’s a machine with original components that will continue to work reliably for years, and that’s truly a delight.

The only real ‘problem’ with the generating machinery, IE the rotor and stator, is that it’s now around 50 years old. However, when properly repaired, the original equipment has already proven its reliability for decades. Moreover, machines that remain completely standard tend to retain a higher value.

At Rex’s, we have CNC winders, the right tooling, and the expertise to ensure the job is done correctly.

The RITA Ignition system has been out of production for many years but remains in regular, daily use. Rex’s provide everything you need to keep the iconic 1970s AB5 & AB11 running smoothly, adding a touch of vintage authenticity to your ride. Our “RITA Revival” repair, along with replacement parts, is available, and we offer free online access to helpful information. Additionally, historical wiring guides are available for reference; while these are no longer current, they may still serve as a valuable resource for owners.

We are the only UK-based centre that holds all the necessary spare parts for Pazon ‘Sure Fire’ kits. We maintain stock of every part required and have the capability to test these ignition systems under real load conditions.

We also offer a quicker solution for customers who prefer not to wait for kits to be returned to New Zealand. Please note that we handle warranty claims only when the customer provides proof of purchase from us. We are able to assist other vendor’s customers, although we may make a charge in this case.

Important – Please check BEFORE sending units for testing, a vast range of euipment would be needed to test every ignition ever produced!

• Electronics design & manufacture
• Plating & passivating to high standard
• Blast cleaning and polishing
• Welding

• Turning and milling
• Testing and mapping of electronic ignition
• In-depth knowledge of Japanese electrical systems

Fully restored Kawasaki H2/A Solid State Magneto (CDI) assembly

First the cases are stripped of the old electronics, then metal cases are zinc plated. Modern electronic circuits are built and test run before they are sealed to the refurbished cases. The unit is fully assembled, tested on the bench and the work is completed with a new set of decals, leads and connectors.

Kawasaki H1/D Stator rewind

Newly manufactured Honda RS500 stator

Fully repaired and rewound TZ250 4DP generator stator

‘Restored & reloaded’ KH400 CDi unit

New electronics sealed in to a replated case finished with new decals.  New leads & connectors backed by a one year warranty

Suzuki GT750 fully restored rotor with new slip rings