Front Splitters
FLOW Designs MK4 Focus ST Adjustable Front Lip Splitter Extensions (Pair) FLOW Designs
Front Winglets & Spats
FLOW Designs MK4 Focus ST Adjustable Front Lip Splitter Winglets (Pair) FLOW Designs
Rear Winglets & Spats
FLOW Designs MK4 Focus ST Adjustable Rear Spat Winglets (Pair) FLOW Designs
Side Winglets & Spats
FLOW Designs MK4 Focus ST Adjustable Side Splitter Winglets (Pair) FLOW Designs
Front Splitters
Rear Winglets & Spats
Air Intakes
MST Performance Cold Air Intake for Ford Focus MK4 ST V2 19+ (FO-MK4016L) MST Performance
Air Intakes
MST Performance High Flow Performance Air Scoop for Ford Focus MK4 (FO-MK4015) MST Performance