Dynamic Friction 830-48045L Disc Brake Rotor - Rear Left

Rear Left Drilled and Slotted Rotor

The Dynamic Friction DFC Geoperformance Rotor - Drilled and Slotted, part number 830-48045L, is a vented rear left disc brake rotor built for select GM and Saab applications. It combines a slotted X drilled surface with a rust resistant coating and Geospec Silver Grey hat finish for a clean, service-ready appearance.

Compatible With 2002-2009 Chevrolet Trailblazer, rear left; 2002-2009 GMC Envoy, rear left; and other listed applications including Buick Rainier, Saab 9-7x, Isuzu Ascender, Chevrolet SSR, Trailblazer EXT, Envoy XL, Envoy XUV, GMC Jimmy, and Oldsmobile Bravada.

Key Features

• Part number 830-48045L for rear left brake service
• Slotted X drilled braking surface for directional rotor operation
• Vented rotor construction with 325 mm outside diameter
• Nominal thickness: 20 mm; discard thickness: 18.5 mm
• 6-lug pattern with 127 mm bolt circle diameter
• Center hole diameter: 78.7 mm
• Rust resistant coating for added corrosion protection
• Geospec Silver Grey hat finish with plain disc finish

Product Details

The DFC Geoperformance Rotor - Drilled and Slotted line focuses on rotor geometry and surface treatment for consistent brake service across matched vehicle platforms. This rotor uses a directional, vented design with six bolt holes and 13.2 mm stud/lug hole diameter, making it a direct-spec rear left replacement for the listed Chevrolet Trailblazer, GMC Envoy, and related models. The part number 830-48045L is built to match the specified dimensions, including 85 mm overall height and 127 mm bolt circle diameter.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What This Rotor Helps Address

• Rear brake pulsation from worn or uneven rotor surfaces
• Brake noise related to rotor wear or surface irregularity
• Corrosion on exposed rotor surfaces
• Reduced braking consistency from rotor thickness loss
• Service replacement needs on rear left brake assemblies

Installation Notes

Verify rear left position, 6-lug fitment, 127 mm bolt circle, and 78.7 mm center hole before installation. Confirm rotor thickness and overall height against the existing part, and inspect pads, caliper condition, and hub surface during service. Because this rotor uses a directional brake surface, install it in the correct rotation orientation for the vehicle side.

Quality Assurance

Built to the listed dimensional and finish specifications for the DFC Geoperformance Rotor - Drilled and Slotted line. The rust resistant coating and Geospec Silver Grey hat finish support long-term appearance and corrosion resistance in normal brake service.