Moturo voltage regulator rectifier suitable for Honda VTZ 250 VFR 400 (NC23 24)

Moturo Voltage Regulator Rectifier for Honda VTZ 250, VFR 400, CBR 400 (NC23/NC24)

The Moturo voltage regulator rectifier for your Honda VTZ 250, VFR 400, and CBR 400 (NC23, NC24, MY 83-94) converts the AC voltage from the alternator into a stable 12 V DC voltage for the vehicle's electrical system. Plug-and-play, ready for installation.

The voltage regulator rectifies the AC voltage from the three-phase alternator and keeps the vehicle voltage within the 12 V tolerance window. This ensures reliable battery charging and protects light bulbs from voltage spikes. The design and performance specifications match the original regulator for the NC23 and NC24.

Replacement takes about half an hour using a socket wrench set and a wire brush for the ground contacts on the frame. Unplug the connector, loosen two screws, place the new regulator, reconnect the plug, and check the fit. Use a multimeter to verify the electrical system is between 13.5 and 14.5 V at idle.

Voltage regulator for the NC23/NC24, made by Moturo.

Performance · Material · Data

• Converts AC voltage from the three-phase alternator into 12 V DC voltage
• Keeps vehicle voltage within tolerance, protecting the battery and light bulbs from voltage spikes
• Design and performance data identical to the original regulator for the NC23 and NC24 platform
• Compatible with VTZ 250, VFR 400 R/RIII, CBR 400 RR, and CBR 400 F (model years 1983 to 1994)

Important notes – please read

Original replacement part design, no separate ABE (general operating permit) required. Before installation, compare the pin assignment and hole spacing with the photo on the product page. The NC23/NC24 platform was delivered with different connector housings over the production years.

Tools & Time Required

• Socket wrench set for the mounting bolts
• Wire brush for the ground contacts on the frame
• Multimeter to verify charging voltage
• About half an hour for an experienced mechanic

Scope of delivery

1 × voltage regulator/rectifier (ready to install). Not included: bolts, connectors, tools.

Frequently Asked Questions

How do I check if the regulator is working after installation?
Connect a multimeter to the electrical system. With the engine warm and at medium RPM, it should read between 13.5 and 14.5 V.

Do I need a TÜV registration?
No. Original replacement part design, not a component requiring registration.

Does the regulator also fit the later CBR 400 RR NC29?
Before ordering, compare the connector pattern and hole spacing with the photo on the product page; the NC29 sometimes differs.