Ford Focus Parts & Accessories

Ford Focus Parts & Accessories

The Ford Focus was produced from 2000 through 2018 in North America and covered three distinct generations on two platforms, establishing itself as one of the most popular and performance-capable compact cars in the segment. The Focus ST brought a 252-horsepower 2.0-liter EcoBoost with a Torsen limited-slip front differential, while the Focus RS escalated to 350 horsepower with an advanced all-wheel drive system that featured an active rear torque vectoring differential. Even the base Focus delivered sharp steering and responsive handling that made it a favorite among budget-minded performance enthusiasts and autocross competitors. This collection covers parts for every Focus variant from the original C170 platform cars through the fourth-generation ST and RS models.

Popular Upgrades

Focus ST owners commonly upgrade with Cobb Accessport and Mountune ECU tunes, Mishimoto or Mountune front-mount intercooler kits, and Turbo Back exhaust systems from Milltek and Borla that add a distinct tone while improving spool time. Focus RS builds center on brake cooling upgrades, Brembo big brake kits, and Nitron or Ohlins coilover systems that complement the factory RevoKnuckle front suspension geometry. Base Focus owners pursue K&N drop-in air filter upgrades, strut tower brace kits, and BC Racing or Eibach coilover kits as an entry-level performance build.

Performance and Handling

The Focus ST and RS use Ford's proprietary RevoKnuckle front suspension, a development of the MacPherson strut that separates the steering axis from the strut axis to reduce torque steer on the high-power front-wheel drive ST. The Focus RS adds an active torque vectoring rear differential that can send up to 70 percent of available torque to the rear wheels via electronically controlled clutch packs, enabling a drift mode that became one of the most discussed factory features of any compact car in 2016. Coilover systems must be matched to the RevoKnuckle geometry on ST and RS models to preserve the factory alignment parameters.

What is the difference between the Focus ST and RS?

The Focus ST uses a 2.0-liter EcoBoost producing 252 horsepower with front-wheel drive and a Torsen mechanical LSD, while the Focus RS uses a more powerful 2.3-liter EcoBoost producing 350 horsepower with an all-wheel drive system featuring an active rear differential. The RS also received Brembo brakes, Recaro seats, and a stiffer suspension tune as standard equipment, while the ST's upgrades were largely optional. Both engines respond well to ECU tuning, but the RS has significantly more headroom due to its more robust bottom end and intercooling system.

Does the Focus RS have head gasket issues?

The 2016 to 2018 Focus RS experienced a higher-than-normal head gasket failure rate with the 2.3-liter EcoBoost engine, particularly in vehicles operated in hot climates or at track events where the engine regularly reached high coolant temperatures. Ford ultimately extended the powertrain warranty coverage for this issue on affected VINs, and aftermarket Cometic MLS multi-layer steel head gasket upgrades paired with ARP head studs are a popular preventive measure for RS owners who track their cars. Monitoring coolant temperature and using a quality 50/50 Ford-spec coolant mixture is recommended for all Focus RS owners.

Why These Parts Fit Right

Parts in this collection are organized by Focus generation, trim level, and engine code to separate base, ST, and RS fitments and to distinguish between the original C170 platform and the later C346 architecture. Fitment charts cover 2000 through 2018 production with specific callouts for ST and RS hardware that differs from base model components. Fast shipping gets your Focus build completed without delay.

Explore our exhaust systems for Focus ST and RS downpipes and cat-back kits, browse suspension upgrades for coilovers and strut tower braces, and check our air intake systems for EcoBoost cold air intakes and intercooler upgrades.