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Focus RS Cat-back exhaust Install Guide
Your Focus RS
Pick your year to see what fits.
This page covers the US Focus RS.
+5–12 whp (est.)
Hard$750–$8002–3 hrs
Why do it
Louder and frees up flow.
Tools you'll need
- Jack and 4 jack stands
- Socket set
- Torque wrench
- Penetrating oil
Starting out? See our budget tool list.
Parts to buy
- MBRP XP S4203409 The same exhaust as our video.Fits 2016–2018
Doesn't fit your car (0)
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Steps
Remove the old exhaust
- Undo the clamp and hangers and pull it out.
Fit the new exhaust
- Hang the new sections and line them up.
Fit the resonator and valve plug
- Fit the resonator and plug in the valve plug.
How to know it worked
- No exhaust leaks at the joints.
- Tips sit even in the bumper.
- Nothing touches the body.
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Safety first
- Park on flat ground, set the parking brake and chock the wheels.
- Never get under a car held up only by a jack. Use jack stands.
- Let the engine and exhaust cool first.
- Disconnect the battery before unplugging electrical parts.
- Wear safety glasses.
- If something doesn't match your car, stop and ask a shop.
Follow your part's instructions and your service manual's torque specs.
Cat-Back Exhaust install guides for other cars