Rear Brake For LADA XRAY

This rear brake disc is specifically designed for Lada XRAY series models; its OEM part number is OE-8450031131. Its dimensions and braking performance parameters are identical to those of the original factory part, meaning no modifications are required-this component can be installed directly to replace the old one. It is compatible with all Lada XRAYmodels equipped with rear disc brakes produced from 2015 to the present, including the sedan (GFL chassis), SW Touring version, and Cross crossover version, as well as both mainstream gasoline engines: the 1.6L and 1.8L variants. This brake disc is manufactured from high-carbon gray cast iron (HT250), with a carbon content ranging between 3.2% and 3.5%, and incorporates small amounts of chromium and molybdenum, ensuring that it does not deform under high temperatures. The disc features a solid construction: its outer diameter is 260 mm, its thickness is 10 mm, it has 4 mounting holes, its pitch circle diameter is 100 mm, and its center hole diameter is 61 mm; all these dimensions match exactly with the OEM part OE-8450031131. After installation, the feel of the brake pedal and the brake force distribution are indistinguishable from those of the original factory part. Whether overseas auto parts suppliers wish to purchase this part in large quantities as a genuine replacement, or repair shops routinely replace brakes for their customers, this product is an ideal choice.

This Rear Brake for LADA XRAY(OE-8450031131) utilizes a non-chromium zinc-aluminum composite coating process that completely avoids restricted substances such as hexavalent chromium; it complies with both the EU RoHS Directive and the environmental protection requirements of the Russian Federation. The coating consists of two layers-primer and topcoat-applied sequentially, ensuring that the protective performance is built up layer by layer.

The first layer consists of a zinc-aluminum flake-based substrate coating applied via dip-coating to uniformly cover the non-friction surfaces, with a dry film thickness controlled between 15–20 μm. The flake-shaped zinc-aluminum particles form a layered shielding structure on the substrate surface while simultaneously providing cathodic electrochemical protection; even in cases where minor abrasion exposing the substrate base occurs, the sacrificial anode mechanism can delay substrate corrosion. The second layer is a silicone-modified topcoat with a spray-applied thickness of 8–12 μm, whose primary functions are to fill the pores of the primer and to enhance its impact resistance and high-temperature resistance.

Laboratory tests conducted on this coating system according to the ASTM B117 standard for a neutral salt spray test demonstrated that no red rust formed over 500 hours, nor was any white rust observed over 240 hours; after being subjected to a continuous high-temperature bake at 320°C for 1 hour, the coating exhibited no blistering, no peeling, and no loss of adhesion; the scratch test for adhesion achieved Grade 0, with no coating delamination observed in the 100-square-grid area. The coating is applied exclusively to the brake disc cap section, the outer edge, and the non-frictional areas on the back side; the friction contact surface remains made of virgin cast iron, ensuring that the initial braking wear-in performance is not compromised, while simultaneously eliminating the risk of braking abnormal noises caused by coating detachment.

All dimensions and performance data are strictly calibrated and manufactured in accordance with industry standards.

This rear brake disc is applicable to multiple vehicle models with stable compatibility and accurate fitting size. The detailed applicable models are listed below:

This product corresponds to a variety of mainstream brand part numbers and OE codes, which can perfectly replace the original parts. The detailed cross-reference information is as follows:

The CNC workshop responsible for producing this Rear Brake for the LADA XRAY (OE-8450031131) is located in a standardized facility with constant temperature and humidity; the ambient temperature throughout the workshop is maintained at 22 ± 1°C, and the relative humidity is controlled within the range of 45%–60%, thereby eliminating machining dimensional deviations caused by temperature fluctuations from an environmental perspective.

The core machining process utilizes an automated production line composed of six upright and inverted CNC lathe machines, paired with a dual-sided synchronous grinding machine; this setup enables the precision turning and texture processing of two friction surfaces in a single setup, thereby eliminating positioning errors associated with a second setup. The final machining accuracy for the disk surface is controlled as follows: lateral runout ≤ 0.05 mm, thickness difference (DTV) ≤ 0.009 mm, surface roughness (Ra) ≤ 1.6 μm, and positional tolerance of the mounting holes ±0.035 mm. The dynamic balancing process employs a fully automatic milling-based dynamic balancing machine, ensuring that the residual unbalance per disk is controlled at ≤ 5 g·cm, thereby preventing braking vibration during high-speed operation.

The entire production process features 12 dedicated quality inspection stations, implementing a system of "first-piece triple inspection + batch random sampling + full-item re-inspection": upon arrival at the factory, all blanks undergo 100% magnetic particle testing to detect internal cracks; during the precision machining stage, every 2 hours, 3 samples are drawn for full-size three-dimensional coordinate measurement; during the finished product stage, samples are taken from each batch at a rate of 3% for salt spray and hardness testing; prior to final outbound shipment, 100% surface appearance and runout re-inspections are conducted. All inspection data is synchronized into the production traceability system, enabling full traceability for each OE-8450031131 brake disc-including its casting batch, machining equipment used, quality inspection personnel involved, and the corresponding outbound inspection report.

Shipping and Packaging Process:
For individual Rear Brake LADA XRAY (OE-8450031131) units: 1. The unit is first wrapped individually with 1.5 mm thick OPP pearl cotton to prevent surface impacts and coating scratches; 2. Two units constitute a complete set, packed in a thickened five-layer corrugated cardboard box, with a custom hardboard spacer inside to secure the disc assembly and prevent shifting during transportation; for bulk orders, products are stacked on standard wooden pallets, reinforced with an outer layer of stretch film and strapping; the maximum load capacity per pallet shall not exceed 1.2 tons.

Logistics Lead Times and Distribution Channels:
For shipments to Russia, the full route takes 25–35 days to reach major cities such as Moscow and St. Petersburg; for European destinations via main ports, the lead time is 30–40 days; alternatively, based on customer requirements, we can arrange dedicated land transport routes via Manzhouli or Horgos, with a land transport lead time of 18–25 days. Warranty and After-Sales Service Terms: The product comes with a warranty of either 18 months or 80,000 kilometers, calculated from the date the customer receives the goods, where whichever criterion arrives first will prevail.

The warranty covers:
disc cracking, abnormal wear, extensive coating peeling, dimensional deviations, and other quality issues resulting from non-human factors such as improper installation or non-standard usage. After-sales Response Mechanism: We will respond to customer inquiries within 24 hours during business days; for minor issues, we provide technical guidance via images and text; once a quality issue is confirmed, we will prioritize the re-delivery of the product, with all round-trip logistics costs borne by us; for mass production quality disputes, we may arrange for a third-party on-site inspection.

Q1: What is the OEM part number for this product? Can it fully replace the original rear brake discs for the LADA XRAY?

A: The exclusive OEM part number for this rear brake disc is 8450031131; all its installation dimensions and braking parameters are identical to those of the LADA original part. As long as your vehicle is a LADA XRAY and the rear wheels utilize disc-type braking systems, this part can be installed directly without requiring any modifications to any other components.

Q2: What are the specific dimensional parameters for the OE-8450031131 rear brake disc, and what is its wear limit?

A: The key specifications are as follows: Outer diameter: 260 mm; new standard thickness: 10 mm; maximum allowable wear thickness: 8.5 mm; 4 mounting holes; bolt hole pitch circle diameter: 100 mm; center alignment hole diameter: 61 mm; features a solid construction; all parameters are fully consistent with the original manufacturer's specifications.

Q3: Does the anti-rust coating on the brake disc surface affect braking performance? Will it produce abnormal noises when first installed on the vehicle?

A: The coating is only applied to the non-frictional cap section, the disc edge, and the back side; the two friction contact surfaces that come into contact with the brake pads are completely free of coating. Therefore, the coating will not affect braking performance, nor will it generate any coating-induced friction noise. After installation, a standard break-in period of 300–500 km is sufficient to achieve optimal braking performance.

Effective November 29,2026, the EU Euro 7 emission regulations will officially come into force for new vehicle models, marking the first time that brake wear particulate matter has been included in mandatory control measures, with emission limits for brake particulate matter in passenger vehicles set at 7 mg/km. This standard is driving brake discs toward designs with lower wear and higher wear resistance, while technologies such as laser cladding and high-carbon alloying are increasingly being adopted across both premium and mass-market vehicle segments.

For the Russian and CIS markets, the updated GOST R 51709-2024 "Technical Requirements for Automotive Brake Discs" to be implemented in 2025 further tightens the mandatory specifications regarding brake disc thickness tolerances, end face runout, and corrosion resistance, while imposing stricter factory inspection requirements for brake products exported to the Russian market. The Rear Brake LADA XRAY (OE-8450031131) already meets the requirements of this standard in terms of machining accuracy and corrosion resistance, enabling it to comply directly with the new regulatory requirements for the Russian market.

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