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Turbosmart's Gen4 WG50/60 12PSI Outer Spring Black/Red is a must-have for External Wastegate setups. This spring provides the ideal boost pressure ...

Turbosmart's Gen4 WG50/60 14PSI Middle Spring Black/Yellow is a must-have for External Wastegate setups. This spring provides the ideal boost press...

Turbosmart's Gen4 WG50/60 10PSI Middle Spring Black/Blue is a must-have for External Wastegate setups. This spring provides the ideal boost pressur...

Turbosmart's Gen4 WG50/60 7PSI Outer Spring Black/Purple is a must-have for External Wastegate setups. This spring provides the ideal boost pressur...

Turbosmart's Gen4 WG50/60 7PSI Inner Spring Black/White is a must-have for external wastegate setups. This spring provides the ideal boost pressure...