2021+ Tesla Model S Plaid / Model S – Stainless Steel Sport Brake Line Set
$295.00
TESLA 2021 MODEL S PLAID BRAKE GUIDE FOR HIGH-PERFORMANCE DRIVING
When the 2021+ Model S Plaid / Model S comes out of the factory, the vehicle is delivered with rubber brake lines. While rubber is a great option from both the carmaker’s and owner’s perspective, as it is durable, resilient, long-lasting, and most importantly, low cost. However, there are some compromises that come with rubber brake lines, including the ability for the rubber lines to expand and contract under hard braking. This expansion leads to a spongy brake pedal feel, which is actually a loss in the braking capability and response that can be felt.
These brake pads are designed for use with OEM Tesla brake calipers and rotors only. They are not compatible with the Tesla Model S Track Pack Brake Kits. If your vehicle is equipped with the Track Pack, please contact our team for the correct brake pad solution.
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Product Details
TESLA 2021 MODEL S PLAID BRAKE GUIDE FOR HIGH-PERFORMANCE DRIVING
When the 2021+ Model S Plaid / Model S comes out of the factory, the vehicle is delivered with rubber brake lines. While rubber is a great option from both the carmaker’s and owner’s perspective, as it is durable, resilient, long-lasting, and most importantly, low cost. However, there are some compromises that come with rubber brake lines, including the ability for the rubber lines to expand and contract under hard braking. This expansion leads to a spongy brake pedal feel, which is actually a loss in the braking capability and response that can be felt.
In turn, to further improve the factory braking capabilities of the 2021+ Model S Plaid / Model S, we’ve developed our Stainless Steel Sport Brake Line Set. For those who demand higher performance and better brake feel from their Model S, this upgrade is something highly recommended. After upgrading to the Stainless Steel Sport Brake Line Set, you’ll notice a firmer and more consistent brake feel during spirited driving. The more-responsive, high accuracy feel will allow for higher confidence and greater precision in braking.
We strongly recommend pairing these upgraded brake lines for your Tesla Model S Plaid or LR with high-temperature racing brake fluid such as Motul RBF 660, PFC RH 665, Endless RF 650, Castrol SRF, or similar racing brake fluids, for maximum performance, as should be done with any brake upgrade. While these brake lines will function just fine with OEM Dot 4 fluid, the OEM fluid will produce a mushy pedal feel in performance driving conditions, regardless of how stout your brake lines are.
This set includes:
- 4 stainless steel brake lines tested to 3000+ psi.
- Laser-cut brackets to replicate the original factory mounting locations and procedures exactly.
- Crush washers and banjo bolts.
Notes:
- Customers purchasing our Carbon Ceramic Big Brake Kit aka BFB Kit for the 2021+ Tesla Model S and LR do not need to purchase this brake line kit, as we include these lines with your BBK purchase.
- Professional installation is recommended.
- These brake pads are designed for use with OEM Tesla brake calipers and rotors only. They are not compatible with the Tesla Model S Track Pack Brake Kits. If your vehicle is equipped with the Track Pack, please contact our team for the correct brake pad solution.
- This set replaces the following Tesla PNs:
- FR LH, BRAKE HOSE, MS, P2 1420723-00-C
- FR RH, BRAKE HOSE, MS, P2 1420724-00-C
- LH RR, BRAKE HOSE, MS, P2 1420731-00-C
- RH RR, BRAKE HOSE, MS, P2 1420732-00-C
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How do stainless lines compare to just changing brake pads?
They solve different problems. Performance pads raise friction and stopping power; stainless lines sharpen how the pedal feels and responds by removing hose flex. Many owners do both, since a grippier pad through a firmer line gives you both more stopping force and better control over it. Owners often add them alongside a Large Sweep rotor and pad upgrade; if your pedal already feels soft under hard use, the lines target that specific complaint directly.
Are stainless lines worth it for a street-only Model S?
They are, if you care about pedal feel. Even in normal driving the firmer, more consistent bite gives you higher confidence and more precise modulation, and the benefit grows the harder you drive. The lines are tested past 3000 psi and use factory-style mounting for a clean, durable install. For a daily Model S that occasionally sees a good road, they are a modest, worthwhile refinement.
Do stainless brake lines last longer than rubber ones?
The stainless braid protects the inner line and resists the swelling and abrasion that age rubber hoses, and this set is pressure tested beyond 3000 psi. Rubber is durable and cheap, which is why Tesla uses it, but it trades away pedal precision. Stainless lines give you a more consistent feel over their life. As with any brake component, inspect them periodically as part of normal maintenance.
Will adding stainless brake lines affect my Tesla warranty?
Fitting aftermarket brake lines does not automatically void Tesla’s coverage. The Magnuson-Moss Warranty Act means Tesla must prove an aftermarket part caused a specific failure before denying a claim, so keep your factory hoses in case you want to revert. Because this job opens the brake hydraulics, having it done by Unplugged Performance or an authorized installer keeps the work clean and documented.
If I buy the carbon ceramic big brake kit, do I need these lines too?
No. Customers buying our Carbon Ceramic Big Brake Kit do not need to add this set, because those braided lines are already included with the BBK. Buy this standalone kit when you are keeping the factory calipers or the OEM-caliper rotor-and-pad upgrades and simply want a firmer, more accurate pedal without the full big brake package.
