A2-307 Rear Rotors, Toyota GR Supra/BMW, 345 mm

Vehicle Info Needed

GIRODISC RACING BRAKES AND TECHNOLOGYPART NUMBER: 864-A2307

A2-307 Rear Rotors, Toyota GR Supra/BMW, 345 mm

Name: A2-307 Rear Rotors, Toyota GR Supra/BMW, 345 mm
Brand: GIRODISC RACING BRAKES AND TECHNOLOGY
SKU: 864-A2307
Price: 1150.00 USD
Availability: InStock

^$1,150⁰⁰

4 left in stock

Ships on Sep 14, 2026

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Toyota

Rear Rotors

Toyota GR Supra/BMW

345 mm

GiroDisc A2-307 Features:

These GiroDisc 2-piece rotors are a direct replacement for the rear rotors on the Toyota GR Supra with the 3.0L motor, as well as BMW G-chassis cars with a 345mm rear rotor, including (but not limited to):

G2X M340i & M440i
G2X with optional M Sport brakes
G01 X3 M40i & G02 X4 M40i
G29 Z4 M40i

Our 2-piece, fully floating assemblies help shed unsprung weight and rotating mass from the front axle of the vehicle. The rotor rings are machined from a proprietary casting made of high-carbon iron formulated to GiroDisc’s specifications. This superior metallurgy results in a rotor that holds up better, and the 48 curved vanes act as a centrifugal pump pulling air in through the hub to effectively cool the rotors under hard use. The 2-piece design means a reusable hat which can be attached to new rings (part number D2-307) when they need to be replaced.

All major components including the hats, rotor rings, and drive pins are manufactured in-house at our facility in Bellingham, WA from domestically sourced materials. The hat is made from 6061-T6 aluminum and coated in a black anodize finish. The drive pins are made from a high-strength steel alloy and cadmium-plated for corrosion resistance. All rotors are assembled with spring clips and Belleville washers for race-ready float while also being street-friendly with no noise from loose hardware.

The minimum thickness at which we recommend replacing these rings is 22mm. We also recommend replacing them if a crack leads to the edge of the ring.

Sold and priced per pair.

Racing Brakes & Rotors

Part TypeBrake Rotor

Product LineGiroDisc Racing Brakes and Technology Brake Rotors

BrandGIRODISC RACING BRAKES AND TECHNOLOGY

Package Height7.0

Package Width14.6

Package Length15.3

Weight34.1 PG

Part CategoryPerformance Parts

Part FitmentDirect Fit

Vendor Part NumberA2-307

Package Qty1

Package TypeEA

No Questions

^$37⁹⁹

JEGS

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Part Number : 555-28007

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LUCAS OIL

Penetrating Oil [11 oz. Aerosol Can]

Part Number : 639-11043

^$8⁵⁴$9.49

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Brake and Parts Cleaner [14 oz. Aerosol Can]

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Some parts are not legal for use in California or other states with similar laws / regulations

A2-307 Rear Rotors, Toyota GR Supra/BMW, 345 mm

GiroDisc A2-307 Features:

Racing Brakes & Rotors

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