PowerStop AR8270XPR Disc Brake Rotor Set - Rear

Rear Drilled and Slotted Rotor Upgrade

Power Stop AR8270XPR is a rear disc brake rotor set built for direct OE fitment on select Buick, Pontiac, and Oldsmobile applications. The drilled and slotted surface helps manage heat, dust, and moisture while the zinc-plated finish adds corrosion resistance for long-term service.

Compatible With 2002-2007 Buick Rendezvous rear, 2001-2005 Pontiac Aztek rear, 2002-2004 Oldsmobile Silhouette rear, and 2002-2004 Pontiac Montana rear. This part number, AR8270XPR, is a direct-fit replacement for drivers looking for a rear rotor upgrade with OE-style installation.

Key Features

• Precision cross-drilled rotor face for improved cooling under demanding braking conditions
• Rounded slots help clear gases, dust, and moisture from the friction surface
• Silver zinc dichromate plating resists rust and corrosion
• Direct OE fit with no special modifications required
• Vented rotor construction for rear brake applications
• 5-lug mounting pattern with 115.00 mm bolt circle diameter

Product Details

Power Stop’s rear drilled, slotted and zinc plated brake rotor pair is engineered around practical brake performance improvements rather than cosmetic changes. The slotted X drilled surface supports more consistent pad contact by helping keep the rotor face cleaner, while the vented design assists with heat management during repeated stops. AR8270XPR is a fitment-based replacement for the rear axle on the Buick Rendezvous, Pontiac Aztek, Oldsmobile Silhouette, and Pontiac Montana listed in the application data.

This part cross-references Centric Parts 120.66048 for the same application.

What It Helps Address

• Brake fade during repeated stops or higher-temperature driving
• Rotor surface rust and corrosion exposure
• Dust buildup on the braking surface
• Moisture-related friction inconsistency
• Uneven pad contact caused by a worn or damaged rear rotor

Installation Notes

Install on the rear position only for the listed vehicles. Verify rotor dimensions before installation, including 11.40 in. outside diameter, 1.80 in. overall height, and 9.00 mm nominal thickness. Confirm the 5-lug, 115.00 mm bolt circle pattern matches the vehicle hub before assembly. Because this is a direct OE-fit rotor, no special modifications are needed when used on the confirmed applications.

Quality Assurance

Power Stop manufactures this rotor with a zinc dichromate coating to help protect against rust and corrosion. The AR8270XPR design follows OE-fit requirements and uses drilled and slotted machining for consistent brake surface performance on the specified Buick, Pontiac, and Oldsmobile rear brake applications.