Supertech Valvespring Set for 2.0L/2.3L Ecoboost Engines (Focus ST, Focus RS, and Ecoboost Mustang) street Utilizing a CNC precision machined

Utilizing a CNC precision machined forging

programmers

1x Driver's side large rear panel

Our tune focuses on the burble and grumble aspect and less of the pop to avoid sounding like popcorn on decel

You must also have a base tune loaded from your tuner of choice before going wide open throttle as well

Supertech Valvespring Set for 2.0L/2.3L Ecoboost Engines (Focus ST, Focus RS, and Ecoboost Mustang) street Utilizing a CNC precision machinedConical Valve Spring Kit Type: Beehive Spring Press. Seat: 72lbs @37. 2mm Max Lift: 12. 00mm Coil Bind: 23. 00mm Rate: 7. 70 lbs mm Retainer: USE OEM RETAINER Spring : SPR FE20BE Seat Locator : USE OEM LOCATOR