BMW E9X M3 / F8X M2, M3, M4 Essex AP BBK Front Rotors (372x36mm)
Girodisc’s 372x36mm front rotors are the ideal replacement for BMW M2, M3, and M4 models equipped with the Essex/AP Racing big brake kit. Engineered for both 9660 and 9668 caliper variants, these 2-piece floating rotors offer superior cooling, lower weight, and consistent braking feel under extreme heat. They’re a direct fit upgrade that combines motorsport-grade performance with OEM-level refinement.
Precision-Built for Track-Ready BMWs
Each Girodisc rotor assembly is crafted from high-strength, U.S.-sourced materials. The anodized aluminum hat is CNC-machined from 6061-T6 alloy, while the cast iron rings use Girodisc’s proprietary high-carbon formula for maximum heat resistance. The curved vane design efficiently draws cooling air through the rotor, keeping brake temperatures under control during aggressive sessions. The floating system allows even expansion, eliminating vibration and maintaining a smooth pedal feel.
Vehicle Fitment
- BMW M2 (F87) with Essex/AP Racing BBK
- BMW M3 (E9X, F80) with Essex/AP Racing BBK
- BMW M4 (F82, F83) with Essex/AP Racing BBK
Features
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Direct BBK Replacement: Compatible with AP Racing 9660 and 9668 front calipers.
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Lightweight 2-Piece Construction: Reduces rotational and unsprung mass for sharper handling and response.
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Curved Vane Cooling: 72-directional vanes channel airflow through the rotor for rapid heat dissipation.
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Floating Mount System: Twelve cadmium-plated steel pins and anti-noise washers maintain silent operation under high loads.
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Replaceable Iron Rings: Hats are reusable—only replace rings when worn.
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Made in the USA: Designed, machined, and assembled entirely in-house by Girodisc.
FAQs – BMW E9X / F8X Essex AP BBK Front Rotors
Are these rotors a direct fit for my BBK? Yes—they’re built specifically for the Essex/AP Racing 9660 and 9668 front kits.
What benefits do they offer over AP’s standard rings? Girodisc rotors deliver better cooling and durability while maintaining precise floating characteristics.
Are they street-friendly? Yes, despite their racing pedigree, they run quietly and smoothly for everyday driving.
Do I need new hardware? No, these rotors include all necessary components for installation with your existing BBK setup.
Experience improved heat management, lower unsprung weight, and race-ready performance with Girodisc’s 372x36mm rotors for AP-equipped BMW M models.
