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OE#45251T2FA81;45251T2FA82;45251T3RA00/YH21903
Private Label, Customized Label
8708309990
Company Profile

Products

Brake Discs Features:
•Equivalent to OE design
•Smooth and quick stop
•Anti-rust
•Low noise, low dust
•Optimal thermal performance
•Higher Grade Materials: They are typically made from more refined, high-carbon iron alloys. This material has better thermal properties, allowing it to absorb more heat without distorting and to dissipate it faster.
•Preventing Warping: Standard rotors are prone to warping under thermal stress. This isn't always a literal bend but often an uneven transfer of pad material onto the rotor surface. This causes a pulsating vibration in the brake pedal and steering wheel. Performance rotors, with their superior metallurgy and heat treatment, are much more resistant to this phenomenon.
• Stop-and-go city traffic. Mountain descents with a full load. Highway merging with the throttle wide open. The modern SUV navigates a wider range of driving conditions than almost any other vehicle category, and its brakes must perform across that entire spectrum without compromise. This disc was developed for exactly that mission. The 312mm diameter provides the stopping authority that mid-size SUVs demand, while the 64.15mm combined thickness reflects a ventilated structure engineered for the thermal demands of a heavier, taller vehicle. But the real story lies in the material—a high-carbon iron alloy that changes the way the disc responds to heat, stress, and time.
• High carbon is not a marketing term here. It is a metallurgical specification with measurable consequences. The elevated carbon content—significantly higher than standard gray iron—creates a microstructure that is both harder and more thermally stable. When the disc heats during braking, the carbon particles within the iron matrix act as thermal reservoirs, absorbing heat and distributing it more evenly across the friction surface. This uniform heat distribution prevents the formation of hot spots, the localized areas of extreme temperature that cause conventional discs to develop thickness variation and pedal pulsation. For SUV drivers who have felt that disconcerting vibration through the steering wheel during a highway stop, this is the solution.
• Consider the phenomenon that many drivers mistake for warping. The disc does not actually bend; rather, uneven pad material transfers onto the friction surface, creating high spots that cause the pedal to pulse with each rotation. This transfer occurs when the disc reaches a temperature that softens the pad compound, allowing it to smear onto the iron surface. High-carbon discs resist this transfer because their thermal conductivity pulls heat away from the surface more quickly, reducing the temperature at the pad-to-disc interface. The pad stays within its optimal operating range, and the disc maintains its smooth, true surface. The result is braking that feels consistent stop after stop, without the gradual degradation that plagues standard rotors.
• The ventilation structure of this disc works in concert with the high-carbon material to manage thermal loads. The internal vanes are configured to generate airflow through the rotor core, pulling cool air from the hub and expelling heated air at the periphery. This airflow carries away the heat that the high-carbon material has absorbed, resetting the thermal state of the disc for the next stop. The vanes are oriented to maximize airflow at the rotational speeds that SUVs typically operate, ensuring that the cooling effect is present across the entire speed range. This combination of material and structure creates a disc that manages heat more effectively than either element could alone.
• The drilled and slotted options available for this disc add another layer of performance capability. The drill holes provide escape routes for hot gases that can reduce friction efficiency, while the slots continuously refresh the pad surface by removing glaze and debris. On a high-carbon disc, these surface treatments are particularly effective because the material's thermal stability prevents the micro-cracking that can occur around perforations on standard iron discs. The high-carbon alloy maintains its structural integrity even with the stress concentrations created by drilling, allowing the disc to deliver the benefits of both material and design without compromise.
• Corrosion resistance is built into the disc through multiple available treatments—oiled, painted, coated, or zinc dust—each suited to different climates and usage patterns. The coating extends to the hub face, preventing the disc from bonding to the wheel flange and simplifying future brake service. For SUVs that regularly encounter off-road conditions where mud and moisture can accelerate corrosion, the coated and zinc dust variants offer enhanced protection. This attention to corrosion prevention preserves the structural integrity of the disc and reduces the risk of stuck components that can turn routine maintenance into a challenging repair.
• The precision machining of this disc achieves a surface finish that minimizes disc thickness variation and run-out. The turning and grinding operations produce a flat, parallel friction face that eliminates the pedal pulsation that plagues unevenly manufactured discs. The grinding process also creates a micro-texture that promotes rapid pad bedding, so the braking system delivers optimal performance from the first stop. For independent workshops, this machining quality translates to fewer comebacks and satisfied customers. For SUV owners, it means smooth, vibration-free braking across the service life of the disc.
• Global certification validates the performance of this disc across multiple markets. ECE R90 approval confirms that its braking efficiency meets or exceeds the original equipment reference, with documented dynamometer testing for friction coefficient, speed sensitivity, and thermal stability. The IATF 16949-certified production facility ensures consistent quality and dimensional accuracy. Whether destined for an SUV in North America, a fleet vehicle in South America, or a distributor serving the European aftermarket, this disc arrives with the traceability and documentation that professional buyers require—a high-carbon brake component engineered for the diverse demands of modern SUV driving.
Test and Inspection

100% critical dimensions, runout and DTV inspection
Material physical and chemical inspection
Test shear strength, compressibility, density, flatness and parallelism
Test performance and noise/NVH
Catalogue

Certifications

Address: No.80, Taishan Road, ETDZ of Yantai , China
Tel: 0086-532-85761111 | Fax: 0086-532-85768370 | Email: autoparts@winhere.com.cn
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