JUN AUTO Racing Valve Spring For NISSAN RB26DETT 1009M-N001Brand JUN AUTO Product Number 1009M N001 Compatible Car NISSAN Compatible Models RB26DETT Product Description 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