M MATI Rear Brake Caliper Assembly for Polaris ATVs — With Pads, OEM-spec Direct Replacement

This M MATI rear brake caliper assembly replaces worn or damaged rear calipers on a wide range of Polaris models including Magnum, Scrambler, Trail Blazer, Trail Boss, Xpedition, Xplorer and Sport machines. The unit ships with brake pads installed and matches factory mounting points and hydraulic connections so you can swap it in without modifications. Part numbers cross-referenced include 1910691, 1910449, 1910367 and 1910270.

Will this caliper fit my specific Polaris model and year?

Compatibility covers many model-year combinations across Polaris utility and sport ATVs. Check the detailed fit list — if your model/year appears there, the assembly is designed to bolt in and connect to the stock brake lines and hardware.

• Fits Magnum 325 (2000–2001) and Magnum 500 (1999–2001)
• Fits Scrambler 400/500 (1998–2004) and Trail Blazer 250/400 (1999–2004)
• Fits Trail Boss 325/330 (2000–2004) and Xpedition/Xplorer models (2000–2002)
• Cross-references: Manufacturer Part #1910691, Replacement #1910449, #1910367, #1910270

What comes in the box and how is the caliper prepared for installation?

The assembly is supplied as a complete rear caliper with brake pads pre-installed and packaged securely in a protective box. This reduces prep time at installation — you typically only need to bleed the brake system after mounting to remove air from the lines.

• Complete rear caliper assembly with pads installed
• Packaged in a protective retail box to prevent shipping damage
• Ready to bolt on; bleeding of brake lines recommended after fitment
• Comes to OEM specification for mounting points and hydraulic fittings

How durable is this replacement and what maintenance should I expect?

The caliper is built to meet OEM fit and finish standards and uses standard materials for longevity under off-road conditions. Regular checks for pad wear, piston movement, and fluid condition will keep braking performance consistent; replace pads or seals when signs of wear appear.

• OEM-spec construction for reliable operation in mud and rough terrain
• Inspect pads, pistons, and boots periodically for contamination or wear
• Bleed brake fluid and check lines after installation and seasonally
• Replace pads or seals as part of routine ATV brake maintenance

Are there any special tools or steps needed to install this caliper?

Installation requires basic mechanical tools and routine brake-shop procedures: remove the wheel, unbolt the old caliper, transfer or replace any retained hardware, mount the new caliper, reconnect the brake line, and bleed the system. If you’re not comfortable with brake bleeding or hydraulic connections, a professional installation is recommended.

• Standard hand tools for caliper and wheel removal (socket set, wrenches)
• Brake line wrench to avoid rounding hydraulic fittings
• Brake-bleeding kit or vacuum bleeder for removing air from the system
• Torque wrench to tighten bolts to manufacturer torque specs

Who is this for: This M MATI rear brake caliper assembly is aimed at Polaris owners, mechanics and ATV repair shops needing a direct-replacement rear caliper with pads for late-1990s to early-2000s Polaris models. It’s ideal for riders restoring older machines, replacing failed brake components, or maintaining fleet ATVs that require OEM-style fit, reliable braking performance, and straightforward installation.