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337/20th/GLI front Brake Rotor/Carrier Kit - ECS GEOMET Cross Drilled & Slotted Rotors (312x25)

Upgrade to larger rotors for increased brake torque. Reuse your stock calipers, pads, and mounting hardware!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
ECS
Mfg Part #
MK4TTBBKNPXS
ECS Part #
ES#412
Brand
ECS

SALE: 504.39 (3% OFF)
WAS: $519.99 on 06-13-2026

This product was last offered at the strikethrough price on
06-13-2026


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This product is lifetime replacement eligible Lifetime Replacement
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Product Details

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Performance upgrades have your car running great, but will it stop?

ECS Tuning has assembled a big brake upgrade kit. The kit lets you move up from the stock 288mm rotor to a larger diameter 312mm rotor. Larger swept area and added mechanical leverage combine to improve braking performance.

The kit includes TT brake caliper carriers and a pair of 312mm ECS GEOMET Coated rotors, treated with a special rust inhibiting process to keep your rotors looking new, longer. 

The rotor faces are slotted and cross-drilled. Crossed-drilling dissipates heat faster for better braking and reduced fade. Slotting cleans the pads by moving water, gases, and contaminants away from the pad/rotor contact surface to further enhance braking performance.

To prevent rust pitting and corrosion damage, ECS GEOMET® rotors are sprayed with a special water-based solution, then heated to cure the coating and remove all oil residue remaining from the manufacturing process. These added steps create a durable, lasting rotor surface that resists road salt, solvents, and other corrosives.

GEOMET® is a proprietary water-based coating that contains metal oxides, metallic zinc, and aluminum flakes. More environmentally friendly than other treatments containing toxic metals, GEOMET® coating contains no nickel, cadmium, barium, or mercury.

Because of the added size of these brakes, 16” or larger wheels are required. When making the conversion use the instruction link and template on this page to ensure proper wheel clearance.

 

** PLEASE NOTE ** The included spacers (washers) must be used between the knuckle and carrier for proper rotor clearance. 

 

 

This Part Fits the Following Vehicles

Make Model Submodel Engine Special Fitment Notes
Volkswagen Golf IV All 1.8T Use vehicle selector to confirm fitment
Volkswagen Golf IV All 2.0 Kit requires VR6/1.8T spindle conversion
Volkswagen Golf IV All TDI Kit requires VR6/1.8T spindle conversion
Volkswagen Golf IV All VR6 12v Use vehicle selector to confirm fitment
Volkswagen Golf IV All VR6 24v Use vehicle selector to confirm fitment
Volkswagen Jetta IV All 1.8T Use vehicle selector to confirm fitment
Volkswagen Jetta IV All 2.0 Kit requires VR6/1.8T spindle conversion
Volkswagen Jetta IV All TDI Kit requires VR6/1.8T spindle conversion
Volkswagen Jetta IV All VR6 12v Use vehicle selector to confirm fitment
Volkswagen Jetta IV All VR6 24v Use vehicle selector to confirm fitment
Volkswagen New Beetle All 1.8T Use vehicle selector to confirm fitment
Volkswagen New Beetle All 2.0 Kit requires VR6/1.8T spindle conversion
Volkswagen New Beetle All TDI Kit requires VR6/1.8T spindle conversion
*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.

Kit Contents

Description Brand Qty Lifetime
Front Caliper Carrier - Priced Each ECS - Corporate Logo 2 YES
Stainless Steel Round Shim - 2mm Thick - Priced Each ECS - Corporate Logo 4 YES
Front V5 Drilled & Slotted VAG Brake Rotor - Left (312x25) OE# 8L0615301 ECS - Corporate Logo 1 YES
Front V5 Drilled & Slotted VAG Brake Rotor - Right (312x25) OE# 8L0615301 ECS - Corporate Logo 1 YES

This Product Is Covered By Our Lifetime Replacement Program

Products protected by our Lifetime Replacement Program are covered for as long as you own the product, no need to worry about an expiration date. Purchase your products and enjoy some worry-free motoring, knowing we've got you covered.

If you have any questions, would like to learn more or are ready to place a replacement claim, click here!

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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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