Turbosmart Kompact Dual Port BOV Focus ST Mazda The sound produced by this

The sound produced by this HKS exhaust system is clear due to the equal length pipe layout after the y-shaped pipe

Tighten the bolts

6L EcoBoost engine in the Fiesta ST can overheat their oil very quickly within a few laps on the track or aggressive street driving

- High Flow Mufflers

The most popular spring in H&R's line-up

Turbosmart Kompact Dual Port BOV Focus ST Mazda The sound produced by thisTurbosmart's Kompact Dual Port BOV for the Focus ST will give you the performance you are looking for. Unlike the OEM plastic valves that use un reinforced diaphragms and are known to crack under increased boost, the new Kompact valves use an O Ring sealed piston which, coupled with their billet aluminium construction give them over 30PSI boost handling capability. If you are going to crank up the boost on your Focus ST, this upgrade is a must! Dual