When valve speed increases by high rotation-ization of engine, 'valve bounce' may occur by the factory valve springs. Moreover, since inherent pitch is low, 'Surging' may occur in a high rotation region. In JUN, the valve spring with which the load optimal at the time of a set and a valve lift is acquired was manufactured. Even when the amount of valve lifts increases by using a high cam, since the adhesion margin is secured enough, the JUN valve springs does not have degradation and its durability is also improving.
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Jun is widely recognized in the automotive world as a Japanese tuner and has created some of the fastest sports compact cars in the 90s. Originally, the company started in 1946 manufacturing engine parts for the internal combustion engine. Today, after more than 70 years in the business, JUN has consistently provided high-performance parts and has turned ordinary vehicles into fast and reliable performance street machines.
JUN Auto has actively participated in races in Japan. During the 90s, they have participated in the All Japan GT Cup, which is considered as one of the most prestigious events in Japan. They did not only race in Japan but went all over the world, conquering the salt lake flats in the US and races in Hockenheimring in Europe. Using the experience they got from joining these races, they were able to translate it into their products, creating parts that could bring out the best in any vehicle.
The company has grown since it first started in Japan. Its popularity has gone worldwide that they established branches all over the world, creating, JUN AUTO Thailand and JUN USA. They have also participated in auto shows from different countries showcasing their products. Some of these shows are SEMA in the US and Tokyo Auto Salon in Japan.
If you are in search of quality performance parts that are proven both on the streets, in car shows and on the track, then JUN Auto is the brand for you. They specialize in internal engine upgrades but also offer external pieces and aero kits as well. Visit Vivid Racing and check out the list of their products that would fit your specific needs.