Rear Brake Disc Of Lexus LX

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Outer diameter: 308mm / Standard thickness: 25mm / Minimum wear thickness: 22mm

Number of mounting holes: 7 / Center hole diameter: 701mm / Single disc weight: 6.8kg / Solid design Engineered for Lexus LX570 URJ200 (2007-2021 models) and Toyota Land Cruiser GRJ200/VDJ200 (2008-2021 models), this product comes with the OEM part number 4243160290 for Rear Brake Dis and fully complies with Toyota TIS brake system specifications. It is professionally optimized for extreme conditions of hardcore off-road SUVs, including heavy-load towing, desert crossing and rock crawling. It delivers consistent and linear braking performance during long-distance trips with seven passengers and full luggage, as well as mountain road braking while towing a 3-ton caravan. It effectively reduces brake fade and brake judder.

Key mounting surface data (for precise matching): Height 76.3mm, wheel bolt hole diameter 16.6mm. Ventilated structure - the air passages between the two friction surfaces continuously dissipate braking heat. It can effectively reduce thermal load whether for Lexus LX during long downhill off-road driving or Toyota Land Cruiser in towing scenarios.

The Rear Brake Disc of Lexus LX 4243160290 is compatible with a wide range of cars, as follows:

There are different corresponding codes for the Rear Brake Disc of Lexus LX 4243160290

Adopting a three-level progressive surface treatment process ranging from basic performance to high-end protection, the product's heat dissipation, rust resistance and wear resistance are comprehensively enhanced.

The first level is the heat dissipation optimization process. Through high-precision CNC milling grooves and array drilling technology, a scientific air circulation network is constructed on the surface of the brake disc, greatly improving heat exchange efficiency and effectively suppressing brake fade.

The second level is the appearance protection process, which provides multi-color customized spraying services to meet the personalized needs of different customers. Among them, matte black and bright silver are globally best-selling color options. The dense paint film formed by spraying can effectively isolate the erosion of water vapor and salt.

The third level is the performance strengthening process. Using advanced laser blue phosphate treatment technology, a uniform and dense phosphate protective film is generated on the surface of the brake disc, which not only improves the braking friction coefficient, but also significantly enhances the product's wear and corrosion resistance, greatly extending its service life.Advantages of the Coating Process
Before talking about the coating, let's point out a detail easily overlooked by many buyers: rust that forms on the non-friction surfaces of brake rotors cannot be worn off by braking. The rust layer will spread year by year, leaving the inner side of the wheel hubs looking grimy and worn.

Our product features differentiated treatments on two key areas. First, a special weather-resistant coating is applied to the mounting surface of the center hole and the non-friction areas around the rotor. Second, we adopt a dual protection of oil sealing and coating before delivery. After a 96-hour continuous salt spray test simulating maritime transportation, the corrosion rating of the rotor's non-friction areas is no higher than Grade 2. Compared with bare rotors from competing aftermarket products, our rotors can maintain a good appearance for an additional 18 to 24 months at least.

Leading brands in the braking industry are now promoting the nickel-free dual-coating technology. Some products with laser cladding or nano-graphene coatings can withstand salt spray tests for over 240 hours. While the surface treatment of our rotors does not reach the top-tier standard, the combination of coating and oil sealing is fully competent for the typical operating conditions of mid-to-high-end off-road vehicles. There is no need to pay for excessive configurations.

Advantages of the Foundry and Machining Workshop
The Rear Brake Disc of Lexus LX 4243160290 production of this brake disc consists of three key processes: material formulation → molding and casting → CNC precision machining.

First, melting and batching. We take GG25 (the German standard equivalent of HT250) as the base material. Industrial recycled scrap steel and self-produced return materials are mixed and melted in an electric furnace, with the molten iron temperature kept within 1420–1460℃. The flake graphite in GG25 cast iron provides self-lubrication for the friction surfaces, while preventing reduced strength caused by excessive carbon content.

In the molding process, double-sided pattern plate sand injection molding is adopted. The whole process from sand injection to molten iron filling is completed in about 30 to 45 seconds. The precision of sand molds is controlled within casting tolerance CT9–CT11, which lays a solid foundation for the stable machining of brake discs.

For the machining workshop, multi-axis linkage CNC lathes are used together with vertical machining centers. The friction surfaces undergo two processes: turning and grinding. Extremely strict standards are applied to the parallelism of both end faces - the thickness deviation at any position along the circumference is controlled within ±0.01mm. Otherwise, juddering will occur when braking after installation.

The automated inspection system is also a highlight. Each production line is equipped with automatic balance testing machines. High-precision contact probes conduct full inspections on thickness, outer diameter and face runout. After inspection, laser marking is applied on the edge of each disc, enabling full traceability of furnace numbers and machining records at any time. Our export products achieved zero complaints throughout last year, with the Cpk value staying steadily above 1.67 for a long period.

In short, the quality of each batch of molten iron relies on proper formulation and standardized operation, and the precision of every single disc depends on rigorous inspection and calibration. We have invested sufficient resources in both aspects and never cut corners on production procedures.

This Rear Brake Disc of Lexus LX 4243160290 GG25 high-carbon brake rotor comes with a quality warranty of 80,000 kilometers or 12 months, whichever comes first. The warranty covers casting defects such as porosity, sand inclusions and cracks, as well as dimensional deviation issues. Damage caused by improper installation, including incorrect bolt torque, uncleaned axle hubs and use of incompatible brake pads, is not covered by the warranty.

A single brake disc of this model weighs approximately 7.9 kilograms. Products are delivered as a complete set containing two discs. Goods are shipped directly from our production base in Shandong. The standard production and delivery lead time is 30 to 45 working days after order confirmation. We allow customers to appoint their own freight forwarders and can also arrange international shipping on their behalf.

Given the weight and package dimensions (each carton measures about 35.3×35.3×18.5 cm and holds two discs), sea freight is recommended to keep transportation costs down. For urgent restocking needs such as low inventory at distributors, express air freight can be arranged, with all additional shipping fees borne by the buyer.

Q1: Can part Rear Brake Disc of Lexus LX 4243160290 be directly installed on the Lexus LX570?

Yes, it is a perfect fit. The rear brake disc with OE number 4243160290 is compatible with the Lexus LX570, facelifted versions of the LX570, the Toyota Land Cruiser LC200 and some subsequent models. Before installation, it is recommended to use a vernier caliper to check if the minimum thickness of the original brake disc is close to 16mm. Replacement at this stage is routine maintenance and requires no hesitation.

Q2: When should the brake disc be replaced? Are there any simple inspection methods?

Judgment can be made based on two scenarios. First, loose components in the brake system (such as insufficient lubrication on guide pins leading to poor caliper retraction), which are not faults of the brake disc itself. Second, defects of the brake disc itself, which can be identified by measuring its thickness. A brand-new brake disc has a standard thickness of 18mm, and replacement is recommended when it wears down to the minimum limit of 16mm. If the groove on the disc surface is deep enough to fully catch the edge of a one-yuan coin (depth exceeding 1.5mm), the disc has exceeded the wear limit. Immediate replacement is required if radial cracks or local blue discoloration appear on the disc surface.

It is advised to conduct regular inspections every 20,000 kilometers. For vehicles frequently towing caravans or driving on mountainous off-road roads, shorten the inspection interval to 12,000 kilometers. The key technical standard is that the face runout shall not exceed 0.05mm.

Q3: Why must the installation torque be set to 100N·m? Is simply tightening the bolts enough?

No. The torque of brake disc fixing bolts is a critical installation parameter. Excessive torque will deform the brake disc and cause vibration during high-speed braking. Insufficient torque or uneven tightening in separate steps will lead to loose bolts, resulting in play between the disc and the wheel hub, as well as abnormal noises and uneven wear. The M12×1.5 bolts must be tightened diagonally at the specified torque of 100N·m, and using a torque wrench is the safest method. If possible, replace the brake pads at the same time for greater convenience, as this will greatly shorten the running-in period between new and old matching friction surfaces.

The global brake disc market is currently undergoing a transformation from selling basic iron discs to manufacturing high-precision differentiated components. In this specific segment, three notable trends deserve attention:

Trend A · Rising penetration of cross-border e-commerce
The estimated size of the North American online auto parts market reached 45 billion US dollars in 2025. Multiple European platforms have categorized "brake discs + brake pads" as strategic product lines. It has become increasingly common for wholesalers to connect directly with manufacturers via B2B platforms. This model eliminates multi-level distribution links, enabling better control over pricing and product quality.

Trend B · Coatings as a key differentiator
Dual-coating technologies launched by leading industry brands have been put into mass production for certain high-end niche products. A draft standard for laser cladding wear and corrosion resistant coatings has also been formulated domestically. Coating technology has evolved from an optional feature into a crucial factor for B2B buyers to select products.

Trend C · Technical parameters as procurement thresholds
Buyers are now more professional than ever. When sending inquiries, they directly ask about specifications such as face runout, standard dynamic balance values and minimum disc thickness. Core technical indicators including surface roughness Ra, residual dynamic balance and minimum thickness have become the primary criteria for purchasing decisions.

For bulk buyers, two major concerns when purchasing brake discs are incompatible products that cannot be installed, and excessive vibration occurring shortly after installation. Every piece of our products undergoes full inspection and dynamic balance testing before delivery, with all parameters fully traceable. This is the reliable guarantee that a qualified supplier should provide for B2B clients.

Contact for quotation: Please provide your OE numbers and target market information. We will offer customized quotation plans and logistics arrangements.

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