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The VSK7 valve spring kit includes a set of VS7 dual valve springs with RK2 retainers and keepers. These springs are meant for serious engine builds with high lift cams. The increased spring rate will engine RPM up to 8,500+. It is highly recommended that you use a Raceseng cam, S1 or S2 Rev Rockers and S1 or S2 Push rods with these springs.
APPLICATION » 160/200/212 Honda GX, Clone and Predator Engines