Stock To .550 Spring Lift Kit (All Models Evolution, With Steel
$101.95
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Stock to .500 lift kit for all Evolution models, with steel top collars. These lift kits do not require cylinder head machining for installation. Manley strongly suggests the use of titanium top collars on applications exceeding .500 lift, as they provide increased strength and reduced inertia mass. Kit includes valve keys part #91-536. Use your stock lower collars.
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