12 Volt Roadster DT400 D&E Electronic Ignition

£265.00 Inc. VAT

Product Downloads

RMK Electronic Ignition Kit Fitting Guides


Modern up-graded ignition to replace the standard DT400 system on 1977 & 78 models. Increased performance through modern dynamic timing curve over the standard fixed ignition. New billet stator bolts on with minimum effort and no fiddling about with timing – fit and go. Electrics plug in to the stock Yamaha electrical system (requires standard, un-modified Yamaha wiring loom).

Rex’s ignition replaces the stator, CDi unit, lighting coil, regulator & rectifier – and gives a nice boost in power too! 

We’ve taken away all the guess work from fitting and timing making this kit simple to install.  The 12 volt kits plug directly in to standard wiring looms, no crimping or wiring needed*. You won’t even need a timing light!

Requires flywheel to be stamped F3T350


DT400 D & E 1977 & 1978

  • Requires no timing adjustment, no timing light – simply bolt on and go.
  • Roadster performance electronic ignition – does not need a battery
  • Simple to fit with clear pictorial fitting guide
  • New billet stator, heavy duty & CNC machined
  • CDI unit fits original holder
  • Ignition & kill switch work as before
  • Modern timing gives crisper performance
  • Full technical backup from the system designers via e-mail

The kit contains; a new 12 volt stator and ignition source coil, 12 volt lighting coil, electronic ignition unit, new HT coil, voltage regulator & fitting manual.

Not included: Battery, bulbs, 12V horn and indicator relay.

*Kit requires a completely standard loom with all its correct connectors.

Engines that have been  bored out or those that have been significantly tuned will need a slotted stator to allow the base timing to be dialled in to suit the different state of tune. See kit RMK-13 for adjustable Full Race ignition.

Additional Information

Weight 1.3 kg

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