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Ferrea Valve Springs - Mitsubishi For ALL racing environments! Developed from high strength alloys Springs are heat treated and stress relieved = increase in spring's life! Provide stability needed for high lift and high RPM. Minimizes load loss for today's aggressive valvetrain combo's. "Harmonics or high frequency fatigue is present in ALL racing engines and will usually destroy the valvetrain if not controlled! Properly designed valve springs will control the dominant harmonics, provide the needed stability, and reduce valvetrain component wear." IMPORTANT: All Valve Springs require Retainers and Spring Seat Locators. See requirements listed under Part #'s.

Mitsubishi Eclipse GS-GST 2.0L, DOHC, 16 Valve (4G63-4G63T), 1990-'99
S10031	Dual	23.1mm	31mm	90 lbs @ 38mm	210 lbs @ 28mm	15mm	$20.99
Valve Springs Require: 1) Ferrea Titanium Retainer #E11005 2) Ferrea Spring Seat Locator #SL1002 - Discard OEM Spring Seat Locator
S10036	Dual Spring - Turbo	22.75mm	29.5mm	80 lbs @ 34mm	180 lbs @ 24mm	13.5mm	$20.99
Valve Springs Require: 1) Ferrea Titanium Retainer #E11005 OR Ferrea Aluminum Magnesium Retainer #E10024 2) Ferrea Spring Seat Locator #SL1009 - Discard OEM Spring Seat Locator
Mitsubishi 3000 GT 3.0L, DOHC, 24 Valve (6G72-Turbo 6G72T), 1990-01
S10037	Dual Spring - Turbo	22.75mm	29.5mm	80 lbs @ 34mm	180 lbs @ 24mm	13.5mm	$20.99
Valve Springs Require: 1) Ferrea Titanium Retainer #E11005 OR Ferrea Aluminum Magnesium Retainer #E10023 2) Ferrea Spring Seat Locator #SL1008 - Discard OEM Spring Seat Locator
Mitsubishi Lancer Evolution 2L - DOHC 16V (Turbo 4G63T) 2024-07
S10084	Dual Spring - Turbo Special Alloy	22.85mm	95	80 lbs @ 30.6mm	225 lbs @ 20.6mm	12.5mm	$20.99
Valve Springs Require: 1) Ferrea Titanium Retainer #E11052 2) Ferrea Spring Seat Locator #SL1041 - Discard OEM Spring Seat Locator