Manley Turbo Tuff Series Crankshaft 83mm Subaru WRX / STI EJ20 / EJ25 2002-2021 vendor_Swift Springs Spring Rates: (F) 12kg/mm (R)

Spring Rates: (F) 12kg/mm (R) 8kg/mm

Cusco offers rally and tarmac diameters for select models

The air filter is located in the original air box space and is protected by a replacement air box which is designed to reduce intake air temperature and increase horsepower

or ‘knock’

this intake is a true bolt-on upgrade—requiring no cutting or permanent modifications

Manley Turbo Tuff Series Crankshaft 83mm Subaru WRX / STI EJ20 / EJ25 2002-2021 vendor_Swift Springs Spring Rates: (F) 12kg/mm (R)Part #: 190060B Manley Turbo Tuff Billet 4340 Subaru crankshafts are the perfect crank to complete a stout bottom end build. Each crankshaft is put through a multi step heat treatment process and nitrided (hardened) for maximum strength. The crankshaft is then stress relieved, shot peened, and magnafluxed (stress tested). The center, crank pin and counterweights are gun drilled for reduced weight. Each Turbo Tuff crankshaft features knife edged