About Defi Defi makes some of the most stylish and popular gauges for import cars. Defi is a private label of Nippon Seiki, which is a major car instrument supplier. All Defi products are developed using the latest technology from Nippon Seiki.
The brand name "Defi" is French for "Challenge", which is the core inspiration behind every Defi gauge and the reason why Defi constantly pushes the envelope in gauge sytle and function.