【Important Notice for International Buyers – Tomoayax OEM Vehicle Parts Japan】
■ Product Compatibility (Fitment)
Please ensure that this part is compatible with your vehicle before purchase.
Compatibility may vary depending on model, year, grade, and specifications.
Please confirm compatibility by part number on your own responsibility.
We do NOT provide fitment confirmation.
Please contact your local dealer and confirm compatibility using the part number.
For accurate verification, we strongly recommend checking with your VIN (Vehicle Identification Number).
■ Buyer Responsibility
The buyer is fully responsible for confirming compatibility before purchase.
We are not responsible for incorrect orders due to lack of fitment confirmation.
■ Installation
Professional installation is highly recommended.
We are not responsible for any damage or issues caused during or after installation.
■ No Return / No Refund Policy
We do NOT accept returns or refunds for:
・Incorrect orders
・Compatibility issues
・Parts that do not fit your vehicle
・Installation errors or damage
■ Product Information
All items are genuine OEM parts from Japan unless otherwise stated.
Please carefully review the product description and images before purchase.
■ Liability
We are not responsible for any damage, malfunction, or issues caused by improper use, incorrect installation, or incompatibility.
■ Final Notice
Please ensure full understanding of the above before purchasing.
This is a universal aftermarket regulator for the Yamaha Drag Star 400. Compatible models: Yamaha Drag Star 400 VH02J (2010~) / V-MAX1700 RP22J (2009~) / YZF-R1 RN24J (2007~) / Bolt/C/R XVS950 VN04J (2014~) / FJR1300A/ABS RP27J (2007~) / Majesty 250 SG20J (2007~) / FZ1-N/S RN21J (2006~) / MT-09 RN34J (2014~) / MT-01 RP121, etc. Genuine part number: 1D7-81960-00
A regulator has two functions: rectifying electricity and controlling the voltage to a constant level. It is a heat-sensitive component, so it is cooled by fins to dissipate heat. If it is installed in a place where it is not exposed to airflow, heat cannot be dissipated, heat will build up, and it may deteriorate and break down.
When it breaks, voltage control becomes impossible, leading to problems such as undercharging or excessive voltage. If you experience symptoms such as inability to charge properly, headlight bulbs burning out easily, rapid deterioration and frequent failures, starter motor failure or strange odors in open-type batteries, or the normal lifespan being reached, there is a possibility that the regulator is malfunctioning.
Even durable genuine parts will gradually deteriorate and break down with repeated heat generation. Since genuine parts can be expensive, it is recommended to replace the entire unit with a new, reasonably priced, high-quality aftermarket part. Because they can break down suddenly without warning, it's reassuring to have spare parts on hand for emergencies.
*Instruction manual is not included. *There may be individual differences depending on the vehicle, so modifications may be required for installation.
This is a universal aftermarket regulator for the Yamaha Drag Star 400.
Compatible models: Yamaha Drag Star 400 VH02J (2010~) / V-MAX 1700 RP22J (2009~) /
YZF-R1 RN24J (2007~) / Bolt/C/R XVS950 VN04J (2014~) / FJR1300A/ABS RP27J (2007~) /
Majesty 250 SG20J (2007-) / FZ1-N/S RN21J (2006-) / MT-09 RN34J (2014-) / MT-01 RP121, etc.
Genuine part numbers: 1D7-81960-00 1D7-81960-01
A regulator has two functions: rectifying electricity and controlling the voltage to a constant level.
Since this component is sensitive to heat, it is cooled with fins to dissipate heat.
If installed in a place where there is no airflow, heat cannot be dissipated, causing it to build up, deteriorate, and eventually break down.
When it breaks, voltage control becomes impossible, leading to problems such as undercharging or excessive voltage.
The battery may not charge properly, the headlight bulb may burn out easily, and it may deteriorate and malfunction frequently in a short period of time.
If you experience symptoms such as a starter motor malfunction, a strange odor, or the starter motor reaching the end of its normal lifespan,
There is a suspected problem with the regulator.
Even durable genuine parts will gradually deteriorate and break down with repeated heat generation.
Since genuine parts can be expensive, we recommend replacing the entire unit with a new, reasonably priced, high-quality aftermarket part.
Since they can sometimes break down suddenly without any warning, it's reassuring to have spare parts on hand for emergencies.
*Instruction manual is not included.
*There may be individual differences depending on the vehicle, so modifications may be required for installation.
*Please note that we do not provide support or answer inquiries regarding installation.
*If you are not confident in installing it yourself, we recommend having a professional company or mechanic install it for you.
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