Supertech Products
STM carries Supertech valvetrain and engine products for the 4G63 Mitsubishi Evolution, DSM, 4B11 Evo X, 6G62 Stealth/3000GT, Nissan GTR 350Z, 370Z and the 2020+ Toyota Supra. If you don't see what you need, just give us a call!

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Supertech Maganese Bronze Valve Guides for 4G63 $4.93
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Supertech Valve Stem Seal (Exhaust) for 4G63/6G72 $1.50
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Supertech Valve Stem Seal (Intake) for 4G63/6G72 $1.50
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Supertech Black Nitride Intake Valves for 4G63 $22.17
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Supertech Black Nitride Exhaust Valves for 4G63 $17.01
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Supertech Head Gasket for Evo 4/5/6/7/8 $83.74
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Supertech 4G63 Dual Valve Spring Kits $419.00
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Supertech Inconel Exhaust Valves for 4G63 $25.60
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Supertech 4G63 Valve Seats from $5.48
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Supertech Inconel Exhaust Valves - Evo X 4B11 $28.08
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Supertech 4G63 Beehive Valve Spring Kits $414.24
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Supertech Black Nitride Intake Valves - Evo X 4B11 $19.18
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Supertech Sodium Filled Inconel Exhaust Valves for 4G63 $47.59
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Supertech 4G63 Single Valve Spring Kit $299.83
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Supertech Maganese Bronze Valve Guides - Evo X 4B11 $6.16
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Supertech Dual Valve Spring Kit for 4B11 Evo X $422.13
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Supertech Nissan R35/350Z/370Z 6mm Valve Stem Seals $0.84
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Supertech Inconnel Exhaust Valve for 2020 Supra (TEVI-1058) $31.45
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Supertech Sodium Filled Exhaust Valve for 2020 Supra (TEVI-1058-HS) $48.21
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Supertech Black Nitride Intake Valve for 2020 Supra (TIVN-1058) $22.53
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Supertech Valve Springs and Titanium Retainers for 2020 Supra $739.73
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Supertech R35 GT-R Inconel Intake Valves Inconel Sodium Filled from $31.44
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Supertech R35 GT-R Black Nitride Intake Valves $21.48
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Supertech - R35 GT-R VR38DETT Dual Valve Spring Kits $703.56