Dynamite Friction 4512-48123 Disc Brake Kit - Front

Front Brake Kit for Select GM SUVs

DFC GEOSPEC Coated Rotors with 5000 Advanced Brake Pads - Ceramic and Hardware, part number 4512-48123, is a front disc brake kit built for select Buick, Chevrolet, GMC, Isuzu, and Saab applications. It combines coated rotors, ceramic pads, and brake hardware in one service package for a complete front brake refresh.

Key Features

• DFC GEOSPEC coated rotors with a silver-gray corrosion-resistant finish
• Dry-processed rotors that are ready to install without extra cleaning
• Non-directional rotor finish for more even pad bed-in and smoother braking
• DFC 5000 Advanced ceramic brake pads with post-cured friction material
• Scorched pads to reduce initial break-in time
• Premium rubber-steel-rubber shims for improved noise, vibration, and harshness control
• Brake hardware with PTFE coating, vulcanized rubber, and stainless steel construction

Product Details

The DFC GEOSPEC rotor line is engineered to OE specifications using G3000/G11H18 cast iron, then machined to tight tolerances and inspected for balance and critical dimensions. The coated surface helps resist rust better than conventional paint or zinc finishes, while the dry-ready design saves prep time during installation. The 5000 Advanced pad formulation is developed for stable friction performance and consistent stopping response, and the included hardware kit is designed to restore proper spring tension and caliper movement.

This part number 4512-48123 is a strong match for front brake service on 2004-2005 Buick Rainier, 2003-2005 Chevrolet SSR, 2002-2005 Chevrolet Trailblazer EXT, 2005 GMC Envoy, 2002-2005 GMC Envoy XL, 2004-2005 GMC Envoy XUV, 2004-2005 Isuzu Ascender 7 Passenger Vehicle, 2005 Saab 9-7x, and 2003 Isuzu Ascender. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Brake Issues This Kit Can Address

• Front brake noise from worn pads or fatigued hardware
• Uneven pad wear caused by corroded or weakened hardware
• Rust buildup on exposed rotor surfaces
• Brake pulsation related to rotor wear or finish inconsistency
• Longer stopping distances from worn friction components

Installation Notes and Tips

Fits 2004-2005 Buick Rainier, front; 2003-2005 Chevrolet SSR, front; 2002-2005 Chevrolet Trailblazer EXT, front; 2005 GMC Envoy, front; 2002-2005 GMC Envoy XL, front; 2004-2005 GMC Envoy XUV, front; 2004-2005 Isuzu Ascender, front, 7 Passenger Vehicle; 2005 Saab 9-7x, front; and 2003 Isuzu Ascender, front. Verify rotor size and brake configuration before installation. Clean the hub mounting surface, torque fasteners to vehicle specifications, and follow a proper pad bed-in procedure after installation.

Quality Assurance

Each DFC GEOSPEC rotor is 100% inspected after machining to confirm critical dimensions and OE-spec compliance. The rotors include a 12-month warranty against defects in material and workmanship.