JUN Valve Springs EVO 4-9

1009M-M002
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  • Regular price SFr. 269.27


NOTE: JUN Ti Retainers or EVO 4-7 retainers required when used on EVO 8/9.

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.