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1GN-IS300 LC500 BBK REAR ROTOR SET

$599.00Price
Quantity

Upgrade your braking system with this high-performance 2-piece rotor, engineered specifically for precision fitment and durability.

Designed to pair seamlessly with Lexus LC500 4-piston calipers (found on 2018 LC500 and Sport models), this rotor delivers enhanced stopping power and consistent performance under demanding conditions. Each rotor is heat-treated and cast from high-carbon steel, providing superior strength, improved heat dissipation, and resistance to warping.

Important Fitment Note: This rotor is not a direct replacement for factory LC500 rear rotors or standard aftermarket options. It features a custom-engineered offset designed exclusively for compatibility with the 1999–2005 IS300/Altezza (Rear) spindle and parking brake mechanism. also, you will need our proprietary caliper brackets 1GN-IS300-LC500 BBK REAR brackets.

If you're looking for a direct replacement rotor for the IS300 model, please refer to our other listings.

Key Features:

  • 2-piece rotor design

  • Compatible only with the (1GN-IS300-LC500 BBK REAR BRACKETS)

  • High-carbon steel construction for durability and heat resistance

  • Heat-treated for improved performance and longevity

  • Custom offset for 1999–2005 IS300 (Rear) spindle fitment

Built for enthusiasts who demand precision and performance, this race rotor is an ideal upgrade for custom brake setups.

  • LEXUS REAR BRAKE COMPONENT INFO

    Model

    Rear Caliper

    Rear Rotor

    Rotor Size

    OEM Caliper PN

    2013 IS350

    2-piston Advics

    310mm

    310x18

    RH 47830-53040 / LH 47850-53040

    2013+ GS350 F-Sport

    2-piston Advics

    345mm

    345x18

    RH 47830-30280 / LH 47850-30280

    IS F

    Brembo 2-piston

    345mm

    345x28

    RH 47830-53070 / LH 47850-53070

    GS F

    Brembo 4-piston

    365mm

    365x26

    RH 47830-0W110 / LH 47850-0W110

    RC F

    Brembo 4-piston

    365mm

    365x26

    Same as GS F

    2018 LC500

    Advics 4-piston

    359mm (“14 inch”)

    359x28

    RH 47830-11010 / LH 47850-11010

    LC500 rear rotor OEM:

    • RH: 42431-11031

    • LH: 42432-11021

    GS F / RC F rear rotor OEM:

    • RH: 42431-0W050

    • LH: 42432-0W010

    INTERCHANGEABILITY

    Swap

    Works?

    Notes

    GS350 F-Sport rear on IS350

    YES

    Needs 345mm rotor

    IS F rear on IS350

    YES

    Common OEM upgrade

    GS F / RC F rear on IS350

    HARD

    Custom brackets/wheels

    LC500 rear on IS350

    VERY HARD

    Different platform

    GS F ↔ RC F rear

    YES

    Same Brembo setup

    IS F ↔ GS350 F-Sport rear

    PARTIAL

    Rotor thickness differs

    EASY IDENTIFICATION

    Caliper

    Pistons

    Visual

    IS350

    2

    Small silver Advics

    GS350 F-Sport

    2

    Larger Advics

    IS F

    2

    Brembo logo

    GS F / RC F

    4

    Big Brembo

    LC500

    4

    Large Advics rear

    IMPORTANT NOTES

    IS F rear

    • Uses thicker 28mm rotor

    • Better thermal capacity

    • Popular with IS F front swap

    GS F / RC F rear

    • Requires:

      • 19" wheels usually

      • parking brake adaptation

      • custom fitment

    LC500 rear

    • Unique newer chassis

    • Not a normal Lexus bolt-on swap

    • Caliper is Advics, not Brembo

    • Very large rear setup recommends (APES MOTORSPORTS LC500 BBK)

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