Slotted Brake Rotors – Enhanced Braking Grip & Pedal Response

Front brake rotor Mercedes-Benz
High carbon alloy rotor
Front brake rotor Mercedes-Benz
High carbon alloy rotor

CORINTH Slotted Brake Rotors | Enhanced Braking Grip Performance Brake Discs - KLT344646A

· Precision Machined Slot Pattern: Precision-engineered curved slots continuously refresh the brake pad surface during operation, removing glazed material and maintaining consistent friction bite for predictable, responsive braking performance throughout pad service life.

· Brake Gas & Debris Evacuation: Slots provide dedicated escape paths for hot brake gas, dust and road debris generated during braking, preventing gas build-up between pad and rotor that causes reduced friction and spongy pedal feel under heavy braking.

· Improved Wet Weather Traction: Slot edges break through water film on the rotor surface immediately during wet braking, delivering faster bite response and more consistent stopping power in rainy conditions compared to smooth plain rotors.

· G3000 Gray Cast Iron Construction: High-quality G3000 gray cast iron material provides stable friction characteristics, excellent thermal conductivity and durable wear performance, matching or exceeding original equipment quality standards for long service life.

· OE Dimensional Accuracy & Balance: CNC machined to exact OE specifications with tight dimensional tolerances and precision dynamic balancing, ensuring vibration-free operation, even pad wear and perfect compatibility with factory caliper and hub assemblies.


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  • Product Description

  • Engineered Quality

  • Qualification Certification

  • FAQ

CertificationsIATF 16949, R90
TypesSolid Disc, Ventilated Disc, Drilled Disc, Slotted Disc, Drilled & Slotted Disc
MaterialsCast Iron G3000, High Carbon Alloy
Part Number

OE#0004211512 / YH YH21439

BrandCORINTH/Support brand customization
Vehicle CompatibilityMercedes-Benz E300 Coupe / E320 Coupe / E350 Extended Limousine / E400 Coupe  / E500 Coupe / SLC260 / SLK350 
LocationFront
Product AttributesMiddle hole diameter:67 mm
External diameter:344 mm
Pitch diameter: 112 mm
Overall height:64.6 mm
Brake pad thickness:32 mm
Minimum thickness:30 mm
Number of Bolt Holes:5


Product Overview

CORINTH slotted brake rotors deliver a measurable upgrade in braking grip and pedal response for performance-oriented daily drivers. Unlike drilled rotors that prioritize cooling, slotted rotors focus on maintaining consistent pad-to-rotor contact quality by continuously refreshing the pad surface and evacuating gas and debris. This results in firmer pedal feel, more predictable bite and improved wet weather performance, making them an ideal upgrade for street-driven performance vehicles.

Core Performance Advantages

  • Consistent Pad Surface Refreshment: As the rotor rotates, the slot edges gently abrade the brake pad friction surface to remove glazing, carbon buildup and worn material. This keeps the pad surface fresh and maintains a consistent friction coefficient throughout the service life of the pads, avoiding the gradual decline in braking feel common with plain rotors as pads glaze over time. The result is consistently firm pedal feel and predictable stopping power from new pads all the way to wear indicators.

  • Gas Evacuation for Firmer Pedal: During heavy braking, friction materials generate small amounts of gas that can become trapped between pad and rotor, creating a cushioning effect that reduces bite and causes a spongy pedal. The slots in CORINTH rotors provide direct escape paths for this gas, maintaining full pad-to-rotor contact and preserving firm pedal feel even during repeated hard braking.

  • Superior Wet Weather Performance: In rainy conditions, a thin water film forms on smooth rotor surfaces, temporarily reducing friction until the pads wipe it away. The sharp edges of the slots break through this water film instantly on contact, providing immediate bite and reducing the initial lag common with plain rotors in wet weather. This adds a measurable safety benefit for drivers in frequently rainy climates.

Application & Vehicle Compatibility

Ideal for daily-driven performance vehicles, sport sedans, hatchbacks, coupes and SUVs where improved pedal feel and consistent performance are priorities. Suitable for all major vehicle brands including European, Japanese, American and Korean models, available for both front and rear axle applications with exact OE dimensional matching. Works excellently with ceramic, semi-metallic and performance brake pad formulations. Particularly recommended for drivers in wet climates and mountainous regions.

Quality Assurance & Certification

Produced in IATF 16949 certified manufacturing facilities with full process quality control. Each rotor undergoes precision CNC machining, 100% dimensional verification, dynamic balance testing and surface hardness inspection. ECE R90 certification available for applicable models. Anti-corrosion zinc coating applied as standard for extended service life and appearance retention.


Precision Manufacturing

Advanced CNC machinery and automated production lines deliver micron-level accuracy on every brake component, ensuring consistent fit and performance across the entire product range.

OE-Standard Quality Control

Every batch undergoes rigorous inspection — from raw material testing to final dimensional verification — matching original equipment specifications for reliability you can trust.

High-Efficiency Production Capacity

Streamlined workflows and smart factory scheduling enable large-volume order fulfillment without compromising lead times or product consistency.

Certified Compliance

Manufactured under IATF 16949 certified processes with ECE R90 and AMECA validated products, meeting global regulatory standards for safety and durability.

End-to-End Traceability

Full production data tracking from forging to packaging gives complete quality transparency and rapid issue resolution at every stage.



IATF 16949 Certified Production Manufactured in our IATF 16949 certified facility, every brake disc is produced under strictly controlled quality management systems aligned with global automotive standards.

Comprehensive In-Line Testing Each batch undergoes full-line inspection covering:

· Brinell hardness testing to verify material integrity and wear resistance

· Parallelism and thickness variation measurement for smooth, vibration-free braking

· Dynamic balance testing to eliminate judder at high speeds

· Salt spray corrosion testing on coated models for long-lasting surface protection

Global Regulatory Compliance Most mainstream vehicle applications are ECE R90 approved for the European market, with AMECA certification available on request to meet North American requirements.

Full Lot Traceability Complete production records are maintained for every manufacturing lot — from raw material sourcing through final packaging — enabling rapid identification and resolution at any stage.

Consistent Quality from Sample to Scale Rigorous sample validation protocols carry directly into mass production, ensuring the same performance and reliability are delivered across both prototype and high-volume orders.


Frequently Asked Questions

Q: What certifications do your brake discs have?

A: Our manufacturing facility operates under the IATF 16949 quality management system — the global automotive industry standard for quality and continuous improvement. The majority of our mainstream brake disc models are ECE R90 approved for the European market, and AMECA certification is available on request for North American applications. All test reports and certification documents are available for review upon inquiry.

Q: Do you offer OEM / private label service?

A: Yes, full OEM and private label solutions are available. We support custom logo laser engraving or printing, branded packaging design, custom part numbering, and tailored performance specifications — including friction material pairing, coating options, and dimensional fine-tuning. Our engineering team works directly with you from design review through first-article inspection to ensure your branded product meets your exact requirements.

Q: What is your minimum order quantity?

A: For stock models, the MOQ is just 20 pieces per size, making it easy to test market demand. Custom branded OEM orders start at 300 pieces per model. Mixed-container orders across multiple part numbers are also supported to help you optimize shipping costs and inventory breadth. Small trial orders are welcome for new customers.

Q: How do I find the correct brake disc model?

A: Simply send us any of the following: the OE part number, a competitor's cross-reference number, or full vehicle details (brand, model, year, and chassis/VIN number). Our technical team will match it accurately against our comprehensive catalog database, typically within one working day, and confirm fitment including front/rear axle position and wheel size compatibility.

Q: What is the lead time for bulk orders?

A: Stock items ship within 7–10 working days from order confirmation. Mass production orders with custom branding or specifications typically require 20–30 working days, depending on order volume and complexity. Rush production can be arranged for urgent orders — please contact our sales team to discuss feasibility and any associated expediting fees.

Q: Can I get samples before placing a bulk order?

A: Absolutely. We encourage customers to evaluate quality firsthand. Samples are available for performance testing and dimensional verification; the buyer covers shipping costs, and samples dispatch within 3–5 working days. For confirmed bulk orders, sample fees can be credited back against your first purchase order as a goodwill gesture.

Q: What is your warranty policy?

A: We offer a 12-month / 50,000 km warranty against manufacturing defects under normal driving conditions and professional installation. This covers material defects, cracking, and abnormal wear attributable to production. Warranty claims are processed efficiently with photo documentation and lot number traceability, and replacement or credit is issued promptly upon verification.

Q: What types of brake discs do you offer?

A: Our range covers solid discs for standard passenger vehicles, vented discs for improved heat dissipation, drilled and slotted performance discs for sport and heavy-duty applications, and anti-rust Geomet-coated options for corrosion-prone markets. We also offer high-carbon and composite rotor constructions for premium and performance segments, ensuring a solution for every price point and regional requirement.

Q: What payment terms do you accept?

A: We support T/T (30% deposit, 70% balance before shipment), L/C at sight for larger orders, and Alibaba Trade Assurance for secure transaction protection. Established customers may apply for extended payment terms after a review of order history and credit standing.

Q: How are the brake discs packaged for shipping?

A: Each disc is individually wrapped in anti-rust paper or film, then placed in a neutral or custom-branded carton with protective foam inserts to prevent transit damage. Palletized shipping is standard for bulk orders, and we can accommodate custom packaging requirements such as barcoding, labeled SKUs, and retail-ready display boxes.

Q: Which markets do you currently supply?

A: We export to over 40 countries across Europe, North America, the Middle East, Southeast Asia, Africa, and Oceania. Our catalog covers European, American, Japanese, Korean, and Chinese vehicle makes, with regular updates to include the latest models and emerging market applications.



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+86 15318655181

Jacky.pan@corinthauto.com

+86 18153529719

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