2.0 & 2.3 EcoBoost Piper Single Valve Spring Kit Mishimoto Within this damping range

Within this damping range

The Focus ST's standard airbox can be found seriously lacking when the power levels have been pushed up by a re-map and other modifications

If you were able to view the front tyres of a vehicle from above the car

plastic valves that use non-reinforced rubber diaphragms and are known to crack under increased boost

pressure and volume

2.0 & 2.3 EcoBoost Piper Single Valve Spring Kit Mishimoto Within this damping rangePiper valve springs are Designed for Stg1 and Stg2 camshafts and are also suitable for use with stock camshafts. Rate: 42 N mm ~ 242. 00Lb Inch Seat Pressure: 22. 00KG ~ 48. 00 Lb f Installed height: 38. 00mm Valve Spring Features: Wound from high quality German steel Steel retainer set included