Manufacturer: Skunk2 Product: Pro Dual Valve Spring/Retainer Kit MSRP: $452.00 (MSRP is typically higher than most shop prices) Description: Pro Series offers even higher RPM revving capabilities.
16 - valve springs
16 - titanium retainers
95-06 Mitsubishi EVO & Eclipse with 4G63BT engine
Skunk2's high-rev dual-valve spring & retainer kit. Dual valve springs are superior to single valve springs at high rpm because the inner and the outer valve springs have different natural harmonic frequencies that help dampen each other and prevent spring surge. Each kit comes complete with new springs bases, valve springs, and titanium retainers.
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