Honda CB400N/T CM400 CB450DX CDI Box

To Fit :- CB400T (Dream), CB400N (Superdream), CB450DX, CM400/450 (custom), 450 Nighthawk. Wil not fit CB400A Automatic or 250cc models. Replaces OE Hitachi CDI box that has "TIA01-20" part number stamped on casing.


Brand new CDI box reversed engineered from an OE unit to fit the above bikes that use the Hitachi ignition system (Not Denso). Built here at BB Bikeshop using quality sourced modern components. Plug and play.  Size and dimensions of case are very close to the original, no need to remove from bike for the removal of engine rocker cover. Some Early machines had a CDI box (and Stator) that had individual bullet connectors on the ends of the dark Blue and White wires, later bikes had a 2 pin terminal socket, please select from the drop down menu.
12 Months Warranty.

Testing the CDIs prior to putting into stock, view here.


If engine running issues remain or still does not spark after replacing the CDi unit the system has other faults which are likely to be in the generator stator, HT coil or flywheel. For generator stator repairs, see related items below.


Replaces OE part numbers:

30400-413-005
30400-413-015
30400-413-305
30400-443-005
30400-443-015
30400-MC9-831

BB Bikeshop
20 Chiminage
Blowhorn Street
Marlborough
Wilts.
SN8 1BW
UK