Polaris ATV Brake Rotor M MATI Stainless Steel OEM Fit 1999-2002

Description

Product Overview

The M MATI stainless steel brake rotor is a precision‑engineered component designed specifically for a range of Polaris all‑terrain vehicles produced between 1999 and 2002. This rotor replaces the original equipment part with an exact fit, ensuring that the braking system performs exactly as the manufacturer intended. By adhering to the OEM part numbers 1910440, 1910439, and 1910188, it guarantees compatibility with models such as the Polaris Diesel 455, Sportsman 335, Sportsman 400, Sportsman 500, Worker 335, Worker 500, and Xplorer 500. The rotor’s dimensions—6.81 inches in length, 5.98 inches in width, and a thickness of 0.63 inches—match the original specifications, allowing for a seamless installation without the need for additional modifications.

Crafted from high‑strength SUS 420 stainless steel, the rotor offers superior corrosion resistance compared with standard carbon‑based rotors. The stainless steel composition not only protects against rust and environmental degradation but also provides a robust platform for heat dissipation during prolonged braking. Each rotor undergoes a controlled heat‑treatment process that raises its hardness to a Rockwell C scale of 34‑38, a range that balances durability with the necessary friction characteristics for reliable stopping power. This hardness level helps prevent the common issue of brake blade warping, especially under the high‑temperature conditions encountered during off‑road riding and heavy load hauling.

In addition to the rotor itself, the package includes eight high‑grade bolts and eight matching nuts, all packaged in a fine‑bag to protect against damage during shipping. The bolts are sized to match the factory‑specified thread pitch, ensuring a secure and torque‑controlled fit that maintains the rotor’s position under dynamic loads. The inclusion of these fasteners eliminates the need for aftermarket hardware, reducing overall installation time and cost for the end user. The total weight of the package is approximately 1.15 pounds, making it lightweight enough for easy handling while still providing the mass needed for stable braking performance.

Designed with the rider in mind, the rotor’s surface finish is engineered to provide consistent friction across a wide range of operating temperatures. The stainless steel surface is machined to a fine tolerance, delivering a smooth yet aggressive contact pattern that works effectively with both organic and semi‑metallic brake pads. This ensures that the braking system responds predictably whether you are navigating steep mountain trails, traversing muddy fields, or cruising on paved roads. The rotor’s design also incorporates ventilation slots that promote airflow, further aiding in heat removal and reducing the risk of brake fade during extended downhill runs.

Usage

When installed on a compatible Polaris ATV, this brake rotor delivers reliable stopping power in a variety of environments. Whether you are tackling rugged off‑road terrain, hauling equipment across a farm, or enjoying a leisurely ride on a paved trail, the rotor’s high‑strength stainless steel construction ensures consistent performance. The rotor’s compatibility with both standard and upgraded brake pads allows riders to tailor the braking feel to their specific preferences, whether they prioritize a softer, more progressive pedal feel or a firmer, sport‑oriented response.

Installation of the rotor is straightforward for anyone with basic mechanical skills. Begin by safely lifting the ATV and removing the wheel assembly. After removing the old rotor, clean the hub surface to eliminate any debris or corrosion. Position the new M MATI rotor onto the hub, aligning the bolt holes precisely. Insert the supplied bolts and nuts, tightening them to the manufacturer‑specified torque values—typically around 30 Nm (22 lb‑ft) for the bolts—to ensure a secure fit. It is advisable to re‑check the torque after the first 50 km of riding to confirm that the fasteners have settled correctly.

During operation, riders will notice the rotor’s ability to maintain consistent friction even after repeated hard braking events. The heat‑treated stainless steel resists thermal distortion, meaning the rotor remains true and balanced, which translates to smoother braking and reduced pedal pulsation. In addition, the rotor’s ventilation design helps dissipate heat quickly, minimizing brake fade on long descents. For optimal performance, pair the rotor with high‑quality brake pads that match the intended riding style, and perform regular inspections of the rotor surface for signs of wear or glazing.

Why Choose Us

M MATI has built a reputation in the powersports industry for delivering components that meet rigorous OEM standards while offering enhanced durability. Our commitment to quality begins with the selection of premium SUS 420 stainless steel, a material chosen for its balance of strength, corrosion resistance, and machinability. Each rotor is produced in a controlled manufacturing environment where temperature, hardness, and dimensional tolerances are continuously monitored to ensure every unit meets the exact specifications required for Polaris ATVs.

Our quality control process includes a multi‑stage inspection protocol. First, raw material batches are tested for chemical composition and tensile strength. Next, the machined rotors undergo dimensional verification using precision coordinate measuring machines (CMM) to guarantee that bolt hole locations and overall dimensions fall within the tight tolerances set by Polaris. Finally, each finished rotor is subjected to a hardness test using a Rockwell C scale probe, confirming that the heat‑treatment process has achieved the target HRC 34‑38 range. Any rotor that falls outside these parameters is rejected and re‑processed, ensuring that only the highest‑quality parts reach our customers.

Beyond the product itself, M MATI provides a comprehensive after‑sales support program. Should any issue arise within the first year of ownership—whether it be a manufacturing defect, unexpected wear, or installation concern—our dedicated service team is ready to assist. Customers can contact us directly for troubleshooting, replacement parts, or warranty claims, and we strive to resolve all inquiries promptly and professionally. This commitment to service reinforces the confidence that riders place in M MATI components, knowing that they are backed by a brand that stands behind its products.

Key Features

• High‑strength SUS 420 stainless steel provides superior corrosion resistance and long‑lasting durability.
• Heat‑treated to HRC 34‑38, preventing warping and maintaining true rotor geometry under heavy braking.
• Exact OEM fit for multiple Polaris ATV models from 1999‑2002, ensuring hassle‑free installation.
• Ventilated design promotes rapid heat dissipation, reducing brake fade on long downhill runs.
• Includes eight bolts and eight nuts plus one‑year service support for peace of mind.

FAQ

What ATV models are compatible with this brake rotor?

The rotor fits a range of Polaris ATVs produced between 1999 and 2002, including the Diesel 455, Sportsman 335, Sportsman 400, Sportsman 500, Worker 335, Worker 500, and Xplorer 500. It matches the OEM part numbers 1910440, 1910439, and 1910188.

Can I use this rotor with aftermarket brake pads?

Yes. The rotor’s surface finish is compatible with both organic and semi‑metallic brake pads. For the best performance, choose pads that match your riding style—softer pads for smoother feel or harder pads for aggressive, sport‑oriented braking.

How do I know if the rotor needs to be replaced?

Inspect the rotor regularly for signs of wear such as deep grooves, scoring, or uneven surface texture. If the rotor thickness has reduced below the minimum specification (typically 0.63 in), or if you notice persistent brake pulsation after a hard stop, it is time to replace the rotor.

What is the warranty period for this brake rotor?

M MATI offers a one‑year limited warranty covering manufacturing defects. If you encounter any issues within this period, contact our support team for assistance, and we will arrange a repair or replacement as appropriate.

Is any special tool required for installation?

Standard torque wrenches and socket sets are sufficient for installing the rotor and the supplied bolts. Follow the torque specifications provided in the installation guide (approximately 30 Nm) to ensure a secure fit.