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2012–2018 Mercedes CLS550 / CLS400 C218 Stainless Steel Braided Brake Lines – Brake Line Upgrade Kit
2012–2018 Mercedes CLS550 / CLS400 C218 Stainless Steel Braided Brake Lines – Brake Line Upgrade Kit
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Upgrade your factory brake hoses with this set of stainless steel braided brake lines for Mercedes C218 CLS550 and CLS400. This complete four-line kit uses a PTFE core inside a 304 stainless steel braid for a firmer pedal and more consistent braking under repeated hard use. As temperatures rise, factory rubber hoses expand and the pedal goes spongy. Braided lines hold their shape, so pedal feel stays the same from the first stop to the last.
What's in the Kit
- 4 braided brake lines — 2 front, 2 rear
- Stainless steel banjo bolts
- Copper crush washers
Specifications
| Inner hose | PTFE |
| Outer braid | 304 stainless steel with PVC cover |
| Fittings | Stainless steel |
| Working pressure | 4,206 PSI |
| Burst pressure | 12,618 PSI |
| Operating temperature | -94°F to +500°F |
| Inside diameter | 3.5 mm |
| Outside diameter | 7.5 mm |
| Minimum bend radius | 38 mm |
Vehicle Compatibility
| Model | Chassis | Engine | Years |
|---|---|---|---|
| CLS550 | C218 | 4.7L BiTurbo V8 (M278) | 2012–2017 |
| CLS400 | C218 | 3.0L BiTurbo V6 (M276) | 2015–2018 |
Direct bolt-on replacement for the factory rubber hoses. Uses the original mounting points and routing — nothing cut, bent or modified.
Frequently Asked Questions
Do braided brake lines actually make a difference?
Yes, and the difference is pedal feel rather than stopping power on paper. Rubber hoses expand slightly every time you press the pedal, and more as they heat up — which shows up as a pedal that sinks further the harder you use the brakes. A PTFE liner inside a stainless braid barely moves, so the pedal stays where you expect it. Most noticeable on repeated hard stops, downhill runs, or track sessions.
Do I need to bleed the brakes afterward?
Yes. Any time a brake line comes off, air enters the system and the brakes must be bled before the car is driven. Most people flush in fresh fluid at the same time, since the system is already open.
Can I install these myself?
It's a straightforward job for anyone comfortable working on brakes — roughly 1–2 hours with the car safely supported and a way to bleed the system afterward. If you aren't confident bleeding brakes, have a shop do it. This is the one system on the car where a mistake isn't recoverable.
Should I replace pads and fluid at the same time?
Worth considering, since the system is already open and has to be bled regardless. Lines, pads and fluid together means one job instead of three.
Warranty, Shipping & Returns
- Warranty: Lifetime warranty against manufacturing defects.
- Shipping: Free shipping within the United States. Delivered in 2–5 business days.
- Returns: 30-day returns. Must be unused, not installed, and in original packaging. 15% restocking fee.
These braided steel brake lines are great! They fit perfectly for my 2014 CLS550 RWD and look amazing (translucent red) and make my upgraded 2014 CLS63 AMG 360mm rear breaks feel and brake so much harder!! They shipped from the UK super fast and were hand made with great quality! Definitely order your had to fined parts.
Hi Mario, thank you for the detailed feedback. Glad the stainless steel braided brake lines fit perfectly on your 2014 CLS550 RWD, look great in translucent red, and deliver that much harder pedal feel with the upgraded CLS63 AMG 360mm rear brakes. Appreciate the kind words. Run some Castrol SRF brake fluid for more braking endurance. Let us know if you need other braking, suspension, or power modifications in the future!