A1-307 Front Rotors, Toyota GR Supra/BMW, 348 mm

Vehicle Info Needed

GIRODISC RACING BRAKES AND TECHNOLOGYPART NUMBER: 864-A1307

A1-307 Front Rotors, Toyota GR Supra/BMW, 348 mm

Name: A1-307 Front Rotors, Toyota GR Supra/BMW, 348 mm
Brand: GIRODISC RACING BRAKES AND TECHNOLOGY
SKU: 864-A1307
Price: 1150.00 USD
Availability: InStock

^$1,150⁰⁰

3 left in stock

Ships on Sep 14, 2026

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Toyota/BMW

Front Rotors

Toyota GR Supra/BMW

348 mm

GiroDisc A1-307 Features:

These GiroDisc 2-piece rotors are a direct replacement for the front rotors on the Toyota GR Supra with the 3.0L motor, as well as BMW G-chassis cars with a 348mm front 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 72 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 D1-307) 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 34mm. We also recommend replacing them if a crack leads to the edge of the ring.

Sold and priced per pair.

Part TypeBrake Rotor

BrandGIRODISC RACING BRAKES AND TECHNOLOGY

Package Height7.1

Package Width14.5

Package Length15.3

Weight52.5 PG

Part CategoryPerformance Parts

Part FitmentDirect Fit

Vendor Part NumberA1-307

Package Qty1

Package TypeEA

No Questions

^$37⁹⁹

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

A1-307 Front Rotors, Toyota GR Supra/BMW, 348 mm

GiroDisc A1-307 Features:

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