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Your Vehicle BMW E46 323Ci M52 2.5L

PowerStop Z26 Street Warrior Brake & Caliper Kit

Complete front and rear red caliper braking for X1 xDrive35i
Power Stop
Mfg Part #
KC7021-26
ECS Part #
ES#4800321
Brand
Power Stop

1220.99
Availability:
Ships Directly From Supplier
Est. Ship Date:
in 2 Business Days
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Does this fit my vehicle?

Product Details

The PowerStop KC7021-26 is the ultimate "one-click" braking overhaul for the BMW X1 xDrive35i. This massive Front and Rear kit is designed for the high-output N55-powered E84, combining freshly remanufactured red powder-coated calipers with high-performance carbon-fiber ceramic technology. Whether you’ve tuned your X1 for more boost or simply want to eliminate the "spongy" pedal feel common with aging factory hardware, this kit provides a total system reset with a race-inspired aesthetic.

The Performance Package

  • Z26 Carbon-Fiber Infused Ceramic Pads: Engineered to handle the torque and weight of the xDrive35i. These pads offer an aggressive initial bite and remain stable up to 1500°F, providing consistent stopping power without the heavy dust or noise of semi-metallic pads.

  • Performance Red Powder-Coated Calipers: Includes a full set of remanufactured OE-spec calipers. Each unit is pressure-tested and treated with a high-temperature red powder coating that resists chemicals and road grime, giving your X1 a distinctive "M-Performance" look.

  • Drilled & Slotted High-Carbon Rotors: These over-sized rotors (348mm front) feature precision-drilled holes for rapid cooling and rounded slots to evacuate gas and debris, ensuring a clean contact patch for repeatable, fade-free braking.

  • Corrosion Protection: Every rotor is finished with Silver Zinc Dichromate plating to protect the hubs and internal vanes against rust—essential for a clean look behind your wheels.

  • Complete Kit: Includes front/rear pads, rotors, red calipers, stainless steel hardware, and high-temp lubricant.

This Part Fits the Following Vehicles

Make Model Submodel Engine Special Fitment Notes
BMW E84 X1 xDrive35i N55 3.0L Use vehicle selector to confirm fitment
*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.

This product is not eligible for Lifetime Replacement

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Return and Exchanges

Need to set up a return? Click here to begin: Return Process

All you need is your order number and email address.


New/Unused Product Returns

ECS Tuning will accept returns for unused products within 90 days of the ship date for a refund to the original payment method used. The customer is responsible for the return shipping costs and fees. If selecting to use a prepaid shipping label, the shipping cost will be deducted from the total refunded amount. All new/unused products must be new, unused and must be in the original packaging, including labeling, manuals, hardware, etc. Special order parts are non-refundable.

In the event that we find an error on our website or on behalf of an ECS Tuning Representative, we will provide a return shipping label from the original delivery location.

Refused Packages

Any domestic orders that are returned to ECS Tuning as refused by receiver or non-deliverable will be subject to a return handling fee and will be processed as a return in compliance with our standard return policy, including a 15% restocking fee.

Any international orders that are refused at the time of delivery will be subject to carrier abandonment of the package, at which time the ordered products would be discarded by the carrier. The customer will not be refunded for the value of the order and the discarded products are no longer retrievable.

Return Process

Return Process

ECS Tuning now offers an online returns solution! To get started, simply log into your ECS Tuning account, Click the "View Orders" button on the My Account home page and select the order that you wish to make a return on to begin. If you have any questions, feel free to reach out to our Customer Service Team for assistance!

Please note: Refunds will be processed to the original payment method used on the order or to an in store credit, respective to the type of return that is made as well as any pre-existing arrangements with an ECS Tuning Customer Service Representative. In the event that multiple forms of payment were used, we will refund the value to an in store credit. In the event that a return label is provided, these charges may be deducted from the total refund you receive.

Original shipping costs are non-refundable and the buyer is responsible for return shipping charges. ECS Tuning will not accept COD deliveries.


All in store credit balances will expire after one year from the original purchase date.

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Shipping Policy

Free Shipping On Orders $49 & Up

Items marked with a 'Free Shipping On Orders $49 and Up' logo may qualify for free standard economy ground shipping to the contiguous United States (48 states) for most orders with a value greater or equal to $49.00 USD. Oversized products and direct ship products are excluded from this offer unless otherwise noted.

Free Shipping

Items marked as 'Free Shipping' may qualify for free standard economy ground shipping to the contiguous United States (48 states). Oversized products and direct ship products are excluded from this offer unless otherwise noted.


The policies listed above are subject to change at any time without notice.

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Lifetime Replacement

Want to know more about our Lifetime Replacement program?

Click here to learn more.

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Why You Should Shop From ECS Tuning

ECS Tuning stands out as more than an automotive parts supplier-it's a vibrant community fueled by a shared passion for cars. Born from the enthusiasm of car lovers, we offer an unmatched understanding and commitment to the automotive world, providing high-quality parts and accessories sourced from our own experiences. Our selection is meticulously crafted to meet the highest standards of performance, quality, and design, catering to both the latest trends and classic styles.


Our distinct advantage lies in our passionate team and comprehensive support, offering expert advice and seamless service from selection to installation. Shopping with ECS brings exclusive perks, including our Lifetime Replacement Guarantee and free shipping on orders over $49, enhancing the value of every purchase. As a central hub for car enthusiasts, ECS Tuning fosters a rich community where ideas and experiences flourish, transforming us from a mere supplier into a platform where automotive dreams come to life.

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Cancellation Policy

At ECS Tuning, we understand that plans can change. That's why we offer a flexible cancellation policy for our customers. You may cancel your order at any time before you receive the shipment confirmation. This policy is designed to provide you with peace of mind and the flexibility to make adjustments to your purchases as needed. Should you decide to cancel your order, simply reach out to our customer service team, and we will assist you with the process swiftly and efficiently.

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ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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