Drilled Brake Discs – High Performance Vented Rotors for Superior Cooling

High carbon brake disc rotor
Ventilated brake disc Mercedes
High carbon brake disc rotor
Ventilated brake disc Mercedes

CORINTH Drilled Brake Discs | High Performance Vented Brake Rotors for Improved Cooling - KLT320520A

· Cross-Drilled Cooling Vents: Precision-engineered cross-drilled holes create additional heat dissipation surface area, rapidly lowering operating temperatures during repeated hard braking and significantly reducing the risk of brake fade under high-performance driving conditions.

· Premium G3000 Gray Cast Iron Construction: Manufactured from high-density G3000 gray cast iron with uniform material composition, delivering stable friction coefficient, excellent wear resistance and long service life consistent with original equipment performance standards.

· Chamfered Hole Edge Design: Each drill hole features a precision chamfered edge to eliminate stress concentrations, preventing thermal cracking around hole edges and reducing pad wear caused by sharp edges, ensuring smooth, vibration-free braking operation.

· Anti-Corrosion Zinc Coating: Full-surface zinc-nickel coating provides comprehensive corrosion protection against road salt, moisture and humid environments, maintaining appearance and structural integrity even in coastal and cold-climate regions.

· Direct OE Dimensional Fitment: Machined to exact original equipment dimensional specifications with tight tolerances, ensuring perfect compatibility with factory calipers, brackets and wheel hubs; no modification, machining or adaptation required for installation.


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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#0004230712 / YH YH42009

BrandCORINTH/Support brand customization
Vehicle CompatibilityMercedes-AMG C43 / AMG GLC43 / E300eL - Plug-in Hybrid / E350L 
LocationBackboard
Product AttributesMiddle hole diameter:69 mm
External diameter:320 mm
Pitch diameter: 112 mm
Overall height:53.5 mm
Brake pad thickness:24 mm
Minimum thickness:22 mm
Number of Bolt Holes:5


Product Overview

CORINTH drilled brake discs are engineered as a high-performance cooling upgrade for passenger vehicles used in spirited street driving, mountain road operation and light track use. The cross-drilled design dramatically increases heat dissipation capacity compared to standard plain rotors, delivering more consistent braking performance and reduced fade during demanding driving conditions. Built from premium G3000 gray cast iron with precision CNC machining, these discs provide the performance upgrade enthusiasts demand while maintaining direct OE fitment and reliable daily drivability.

Core Performance Advantages

· Enhanced Heat Dissipation: The cross-drilled pattern adds significant surface area to the rotor friction face, allowing heat to escape more rapidly than solid plain discs. During repeated hard braking, this reduces peak operating temperatures by 15–20% compared to standard vented rotors, effectively delaying the onset of brake fade and maintaining consistent friction performance. Each hole is precisely positioned to optimize airflow across the friction surface without compromising structural integrity.

· Improved Wet Weather Braking: Drilled holes provide escape paths for water between the pad and rotor surface, breaking the water film that causes temporary loss of braking power in wet conditions. This delivers more confident, immediate braking response during rainy driving and reduces the risk of hydroplaning-related brake lag.

· Structurally Optimized Design: Every drill hole receives a precision chamfer on both sides to eliminate sharp edges and stress risers. This prevents thermal crack propagation from hole edges during high-temperature cycling, a common failure point in low-quality drilled rotors. The rotor is also dynamically balanced to within strict tolerances to eliminate brake judder and vibration at highway speeds.

Application & Vehicle Compatibility

Suitable for sport sedans, hatchbacks, coupes, SUVs and performance passenger vehicles used for spirited street driving, mountain roads and daily commuting. Compatible with all major global vehicle brands including Toyota, Honda, Ford, Volkswagen, BMW, Mercedes-Benz, Audi, Nissan, Chevrolet and Hyundai. Available for both front and rear axle applications, matching OE dimensions for direct bolt-on installation. Recommended for use with performance semi-metallic or ceramic brake pads to maximize performance benefits.

Quality Assurance & Certification

Manufactured in IATF 16949 certified facilities with strict process controls throughout casting, machining and finishing. Each rotor undergoes 100% dimensional inspection, dynamic balance testing and surface hardness verification. ECE R90 certification is available for applicable European vehicle models. Full batch traceability documentation is provided with every wholesale order, backed by a 12-month warranty against manufacturing defects.


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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