Dynamic Friction 830-21039L Disc Brake Rotor - Rear Left

DFC Geoperformance Rear Left Rotor

The Dynamic Friction DFC Geoperformance Rotor - Drilled and Slotted, part number 830-21039L, is a rear left disc brake rotor built for specific Genesis G70 and Kia Stinger applications. It features a 340 mm outside diameter, 58.5 mm height, 5-lug construction, and a directional slotted X drilled surface for consistent brake contact.

The Geoperformance rotor line pairs a Geospec silver grey hat finish with a rust resistant coating to help maintain a cleaner appearance on exposed brake components. This rotor uses a plain disc finish, 69 mm center hole diameter, 114.3 mm bolt circle diameter, and 12.5 mm bolt holes for the listed fitments.

Key Features

• Part number 830-21039L
• Rear left disc brake rotor
• 340 mm outside diameter
• 22 mm nominal thickness, 20 mm discard thickness
• Directional slotted X drilled surface
• Geospec silver grey hat finish
• Rust resistant coating
• 5 bolt holes and 5 stud/lug holes
• 69 mm center hole diameter
• 114.3 mm bolt circle diameter

Product Details

Built for brake service on the rear left side, this Dynamic Friction rotor is specified for 2024-2025 Genesis G70, rear left; 2022-2023 Genesis G70, rear left with 4 piston front calipers; 2018-2023 Kia Stinger, rear left; and 2019-2021 Genesis G70, rear left with Brembo brakes. If you are searching for a rear left brake rotor for Genesis G70 or Kia Stinger fitment, 830-21039L provides the listed dimensions and directional surface pattern in one application-specific part.

Common Uses

• Replacing a worn rear left brake rotor
• Addressing rotor scoring or uneven braking feel
• Restoring correct rotor thickness for service limits
• Servicing drilled and slotted rotor applications on Genesis G70 and Kia Stinger models

Installation Notes

Verify rotor dimensions, bolt pattern, and rear left position before installation. This rotor is directional, so orientation matters during mounting. Confirm caliper package notes for the vehicle, including Brembo brakes or 4 piston front calipers where listed, and inspect pads, hardware, and hub condition during brake service.

Quality Assurance

Dynamic Friction Geoperformance rotors are built with a rust resistant coating and a corrosion-resistant hat finish to support long-term appearance on exposed brake components. Part number 830-21039L is engineered to match the listed vehicle applications and rotor specifications.