Focus ST/RS Parts

This kit uses manifold boost pressure to determine when and how much fluid to inject. Proportionally injecting according to boost pressure gives th...

Not many enthusiasts are aware that OE and more importantly aftermarket sway bar effectiveness can be hindered by worn or inadequate mounts, drop l...

Pro series cylinder head studs from ARP are cold-forged to ensure molecular integrity. They are heat-treated prior to thread rolling and machining ...

***Individuals available as special request*** Synchrotech® 1-6 Pro Series Carbon Synchro Set  Carbon Fiber Lining Steel Body Improved Performance...

XClutch Stage 1 organic upgrades have been designed for performance street applications where driveability is critical. All Stage 1 clutch kits uti...

Product Weight (lbs.) 29.6 Torque Capacity (ft/lbs.) 582  Torque Capacity Over OE 58% Disc Material Organic Clutch Disc Diameter (Inch...

***Fortune Auto is Built to Order - Leadtime is 4-8 Weeks*** ***Contact Us for custom spring rates, or upgrades to Swift/Hyperco Springs*** ***Heim...

*XDI Is build to order on all High Pressure Fuel Pumps - ETA 3-4 Weeks* This Patent Pending GDI high pressure pump was developed to replace the Bos...

We are excited to bring a low-cost performance brake modification to your Ford Focus! The Damond Motorsports Caliper Bushings have many amazing ben...

The Damond Motorsports Side Motor Mount Combo is a must have for any MK3 Focus ST/RS enthusiast looking to keep their powertrain solidly planted, d...

Torque Steer and wheel hop are two massive problems for the Ford Focus ST. Both wheel hop and torque steer are caused in part by chassis deflection...

By bracing the spring perches and shock mounts, rear traction and grip will be dramatically increased! Bolt on the competitive edge you need with t...

Quite possibly the best handling bolt on out there for the Focus ST! Improve grip, traction, steering response and engine bay appeal with this full...

Get the most mechanical and precise shifter feel on your Focus ST! Everybody loves that crisp, mechanical, snap as your shifter goes into gear and ...

The first aftermarket option for the Focus ST that correctly positions the end links to prevent binding and reduces snap oversteer. Increase grip a...

Improve handling and reduce wallowing and unpredictable suspension traits by reinforcing your Focus ST crossmember with this brace! A massive 6 poi...

Are you tired of your charge pipes getting chewed up by the factory rad support? Cant quite seem to tighten the charge pipe hose clamps due to the ...

The Torque Gusset Traction Bar braces critical junctions and helps eliminate wheel hop and torque steer by preventing changes in alignment under ha...

Fine tune your cars oversteer/understeer characteristics with this rear strut bar! Dont fall for companies selling braces that only connect the sho...

With the Power coming in strong and sharp to those rear wheels, extra bracing is needed to keep traction and grip. The Focus RS Comes with weak sta...

**FOR OFF ROAD AND RACE USE ONLY** 12-20 week lead time! Clayton Performance is now authorized to sell the Arc Enemy Fab (scooter for those of you ...

Birthed on the forums through community effort, Clayton Performance is proud to offer our Purge Valve assemblies! Completely user serviceable, manu...