Be aware of fakes of Defi products.
Thank you for using our product.
Recently, package-copied products and fake products which our trademarks (Defi logo and others) and address are put in are sold in the marketplace around the world. And we receive inquiries from people who purchased those by mistake.
Those counterfeit products infringes our intellectual property rights.
Please be careful enough because those may disadvantage a person who purchases those.
Please note that we, Defi, do NOT accept liabilities when the following troubles occur:
When those fakes are purchased by mistake.
When Defi products or vehicles break down by installing those fakes.
There are also many kinds of imitations sold in the marketplace.
Please beware of those products.
If you find fake products, please give us the notice.
We have applied to several auction and video sites for deleting over 750 fake items in the last 10 years.
(As of February, 2025)
If you find fake products for sale, we would appreciate it if you could give the information to our official distributor near you. We would be able to judge whether they are fake or not if you post the pictures on our Facebook page (if you can take photos).
Defi, Nippon Seiki Co., Ltd.
November 6, 2010
EDIT: September 5, 2012
EDIT: August 21, 2013
EDIT: June 30, 2015
EDIT: January 15, 2016
EDIT: August 29, 2017
EDIT: January 31, 2018
EDIT: March 6, 2018
EDIT: July 16, 2019
EDIT: December 25, 2019
EDIT: June 24, 2021
EDIT: May 11, 2022
EDIT: April 27, 2023
EDIT: January 10th, 2024
EDIT: January 24th, 2025
EDIT: February 7th, 2025
Fake pictures
Following pictures are samples of fakes.
Sensor
For the details of sensor specification, please refer to “Sensor Specification.”
<Fake sensors>
<Defi sensors>
<Comparing> (Edit: March 6, 2018)
Meter wire color
As a part of environmental measures, we have changed the color of meter wires for ADVANCE series from shipments of December, 2017. Please pay attention to fake wires of similar colors.
Parts：Meter wires for ADVANCE series (25cm, 50cm, 1m, and 2m)
One of the 4 lines has been changed from orange to blue.
*The picture is Defi’s genuine meter wires. (not fake)
*There are distributors’ stock which includs the old color wires in the market.
Gauge backside
This picture is our genuine gauge’s backside (80mm, 60mm, and 52mm). The manufacturing information is printed on the label stuck on a backside of gauges.
Racer Gauge N2 (Edit: June 24, 2021)
It has been confirmed that there are fakes of the Racer Gauge N2.
We found a video on YouTube showing a counterfeit of the Racer Gauge N2. The numbers and scales on the dial of our real gauges are lit in white (US models are lit in red), but the counterfeit seems to be able to change the color of the lights. Also, the Racer Gauge series (except 80mm tachometer) does not have a warning or peak indicator function, so there is no LED indicator display on the bottom right of the dial, but the imitation had one.
We have not been able to obtain the fake product, so we cannot post a picture of it, but we would appreciate your attention.
ADVANCE Control Unit (Edit: March 6, 2018)
The package is totally different.
The shapes of connectors are different.
The colors of the dip switches are different. Defi is black and the fake is red.
Edit: July 16, 2019
The shapes of the connectors are the same as genuine connectors. Be careful not to connect genuine wires to fake control unit.
The labels and the colors of the screws are different.
The labels are different.
ADVANCE A1 (Edit: March 6, 2018)
The fake box has no printing.
The contents of the package of oil pressure gauges
The numerical figures of the fake dial plate are more visible than our genuine plate. In addition, there are many labels on the backside of the fake gauge.
The both gauges are fake.
The fake glass is not low reflection.
Our genuine A1’s illummination color is white. The fake is blue and red.
ADVANCE ZD Club Sports Package (Edit: July 16, 2019)
ADVANCE ZD Club Sports Package（CSP） is a set of ADVANCE ZD, ADVANCE Control Unit., 1 pressure sensor, and 2 temperature sensors. A boost sensor is not included in CSP, but it’s included in a fake CSP.
The following is genuine.
The following is fake.
ADVANCE ZD doesn’t display boost, but the fake includes a boost sensor.
Regarding the color of the meter wire
ADVANCE ZD
ADVANCE ZD fake is going around in the market now! Please be careful when you purchase ADVANCE ZD.
Differential point is
・ZD body appearance
・Accessories
・Page numbers of Manual (written in English only)
・Sensor shape
・Stand-alone
・Etc
【ZD body appearance】
Front
Back
【Components】
Regarding the color of the meter wire
【Manual】
【Temperature Sensor】
The sensitive part is shorter than original and its color is different.
※There is no temperature sensor in original package “DF09701 AVANCE ZD”.
Note: In this case, we compared fake sensor with original sensor in CSP package.
【Package】
It is too difficult to identify fakes from its package.
Fake package is completely copied.
Edit: July 16, 2019
We have confirmed fake ZDs so far, but most of them have a whitish cover of the 8 sequential indicators at the top and left DIM (light control) sensor. In addition, there were differences in the connector shape, color, and labels on the back.
The ZD display is an amber (orange) organic OELD, and sequential indicators are red. On the other hand, the fake was not OELD but LCD, and the fake display and indicators’ colors could be changed. It is not Defi’s ZD if the display color can be changed. The fake has functions that ZD doesn’t have, such as turbo display and odometer value change.
Defi-Link Meter BF (End of sale)
Regarding the color of the meter wire
ADVANCE CR
The fake is a volt gauge and doesn’t include any sensor. The Defi’s picture is a boost gauge’s. We don’t manufacture volt gauges of ADVANCE series.
Regarding the color of the meter wire
ADVANCE BF
The fake is a volt gauge and doesn’t include any sensor. The Defi’s picture is an oil pressure gauge’s. We don’t manufacture volt gauges of ADVANCE series.
Regarding the color of the meter wire
ADVANCE C2
Regarding the color of the meter wire
BF Tachometer (End of sale)
