Defi is a brand name for aftermarkets used by Nippon Seiki which manufactures and supplies gauges and displays for vehicles. Nippon Seiki has designed and produced automobile instrument clusters for over 60 years. We supply instrument panels for the world’s sports vehicles and specialized vehicles. F-1 drivers and motorcycle racers put their confidence in the accuracy and performance of our products. We are continually seeking innovative ways to produce state-of-the-art technology for Defi’s aftermarket products.