Grooved Brake Rotors – Slotted Design for Stable, Consistent Braking Performance

Discovery 4 brake disc
Land Rover brake disc manufacturer
Discovery 4 brake disc
Land Rover brake disc manufacturer

CORINTH Grooved Brake Rotors | Slotted Design Stable Braking Performance Discs - KLT350594

· Precision Machined Groove Pattern: Precision-engineered curved grooves (slots) across the rotor friction surface continuously condition the brake pad face, removing glazed material and maintaining uniform friction characteristics for stable, predictable braking performance.

· Hot Gas & Dust Evacuation: Grooves provide dedicated channels for hot brake gas, friction dust and road debris to escape from the pad contact area, preventing gas cushioning and maintaining full pad-to-rotor contact for consistent pedal feel and stopping power.

· Consistent Performance Throughout Wear: Unlike plain rotors that experience declining feel as pads glaze over time, grooved rotors maintain consistent friction performance from brand new pads all the way to wear limit, ensuring predictable braking for the full service interval.

· High-Strength G3000 Cast Iron: Manufactured from high-density G3000 gray cast iron with homogeneous material structure, providing excellent thermal stability, consistent friction coefficient and durable wear resistance for long, reliable service life.

· Precision Balanced Smooth Operation: CNC machined to tight dimensional tolerances with precision dynamic balancing, delivering smooth, vibration-free braking with no increase in noise or harshness compared to standard original equipment rotors.


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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#SDB000646 / YH YH20379

BrandCORINTH/Support brand customization
Vehicle CompatibilityLand Rover Discovery 3 / Discovery 4 / 3.0TDI Diesel / 5.0L / Range Rover Sport / Range Rover Sport 
LocationBackboard
Product AttributesMiddle hole diameter:79 mm
External diameter:350 mm
Pitch diameter: 120 mm
Overall height:59 mm
Brake pad thickness:20 mm
Minimum thickness:18 mm
Number of Bolt Holes:5


Product Overview

CORINTH grooved brake rotors (also known as slotted rotors) are designed to deliver stable, consistent braking performance by maintaining optimal pad-to-rotor contact quality throughout the entire service life of the brake pads. By continuously cleaning and refreshing the pad friction surface and evacuating gas and debris, these rotors eliminate the gradual decline in braking feel that occurs with standard plain rotors as pads glaze over. They provide a noticeable improvement in pedal feel and consistency without the structural trade-offs of drilled designs.

Core Performance Advantages

  • Sustained Consistent Performance: A common but often overlooked issue with standard brake systems is pad glazing. Over time and with heat, the pad friction surface develops a smooth, glazed layer that reduces friction coefficient and creates a softer, less responsive pedal feel. Grooved rotors solve this by continuously abrading the pad surface with each rotation, keeping it fresh and maintaining consistent friction characteristics. This means the brake pedal feels the same at 1,000 km and 40,000 km, giving drivers predictable, dependable performance for the full service interval.

  • Improved Pedal Feedback: By preventing gas buildup between pad and rotor, grooved rotors deliver a firmer, more direct pedal feel. Drivers experience better feedback and more precise modulation, which translates to greater control and confidence during braking. This improvement is particularly noticeable during moderate to heavy braking, where gas buildup is most likely to occur with plain rotors.

  • Durable Structural Design: Unlike drilled rotors that remove material and create potential stress points, grooved rotors only remove a small depth of surface material, preserving nearly full rotor structural integrity. This makes them more resistant to thermal cracking under extreme conditions and generally longer-lived than drilled alternatives for drivers who prioritize durability and consistency over maximum cooling.

Application & Vehicle Compatibility

Ideal for daily drivers, family vehicles, commuter cars and fleet vehicles where consistent, reliable braking performance is a priority. Excellent choice for urban stop-and-go driving conditions where pad glazing is common. Compatible with all major vehicle brands including Japanese, German, American and Korean models, available for both front and rear axle applications. Works with all standard brake pad types including ceramic, semi-metallic and low-metallic formulations.

Quality Assurance & Certification

Manufactured in IATF 16949 certified production facilities with strict quality control protocols. Each rotor undergoes precision CNC grooving, dimensional verification, dynamic balance testing and surface quality inspection. ECE R90 certification available for applicable vehicle models. Full anti-corrosion zinc coating applied as standard. Backed by 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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