Click to zoom in
SKU: A1-186
Girodisc 14-20 BMW M2/M3/M4 (F8X w/Blue Calipers) 380mm Slotted Front Rotors
Girodisc A1-186 rotors are two-piece 380mm x 36mm slotted front brake rotors designed for 2014-2020 BMW M2 F87 M3 F80 and M4 F82/F83 models equipped with factory blue calipers and M Compound brakes. These rotors replace OEM parts directly with lighter weight for reduced unsprung mass and enhanced track performance. They deliver consistent braking under high heat by channeling gases and dissipating fade.
Key Features
- Two-Piece Design: 6061-T6 aluminum hat with high-carbon ductile iron friction ring reduces rotating mass by 4.8 lbs per rotor compared to OEM 29.3 lbs
- 72 Curved Vane Slotted Rotor: Directional slots clear brake gases improve pad bite and manage heat for repeated high-performance stops
- Precision Engineering: 380mm OD 36mm thickness 82mm height with floating hardware for thermal expansion and zero distortion
- Corrosion Protection: 300 series stainless steel drive buttons and bushings ensure long-term durability in harsh conditions
- Direct Replacement: Bolt-on fit retains OEM caliper pads and hardware compatibility for 2014-2020 F8X chassis
Product Notes
- Requires proper bed-in procedure for optimal performance and pad transfer
- Inspect rotors regularly and replace when minimum thickness 34.4mm is reached
- Ships as pair weighing 49.6 lbs total in protective packaging
Installation Notes
- Professional installation recommended.
- Includes all Girodisc hardware bolts and bushings for complete assembly
- Compatible with OEM blue M Compound calipers no modifications needed
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2014-2020 | BMW | M3 | Base Sedan F80 w/Blue Calipers |
| 2014-2020 | BMW | M4 | Base Coupe F82 w/Blue Calipers |
| 2014-2020 | BMW | M4 | Base Convertible F83 w/Blue Calipers |
| 2016-2020 | BMW | M2 | Base Coupe F87 w/Blue Calipers |
Why Choose Girodisc?
- Hand-assembled in USA with motorsport-proven designs used in GT racing
- Advanced metallurgy resists warping and cracking under extreme track abuse
- Engineered for BMW enthusiasts demanding reliable street and circuit braking
Frequently Asked Questions
-
Q: Will these rotors fit BMW F8X models with red carbon ceramic calipers?
A: No these A1-186 rotors fit only blue M Compound calipers and 380mm OEM rotors red calipers require different Girodisc part -
Q: What material is used in the rotor ring?
A: High-carbon ductile iron alloy with 72 curved vanes for superior heat dissipation and strength -
Q: What warranty covers these rotors?
A: Girodisc offers limited lifetime warranty against defects when installed and maintained properly
Shipping & Handling
- Method: UPS Ground freight for heavy item
- Availability: In stock - ships same or next business day
- Packaging: Secure double-box 42in x 14in x 14in dimensions
- Weight: 49.6 lbs pair
BMW M Series Models Parts & Accessories
Explore Our BMW M Series Models Parts & Accessories Welcome to our exclusive collection of BMW M Series Models Parts & Accessories, where quality meets performance. Whether you are looking to upgrade your vehicle's performance or enhance its aesthetics, we have a wide selection of parts tailored to fit your specific needs. Our collection features an extensive range of products designed specifically for BMW M Series models, ensuring compatibility and superior performance. Discover Our Product Categories Air Intake Systems Brakes, Rotors & Pads Exhaust Systems Engine Components Exterior Parts & Accessories Interior Accessories Lighting Suspension Wheels & Tires Special Offers and Expert Support Along with our extensive range of parts, we regularly provide special offers for your BMW M Series Models. Our knowledgeable sales team is ready to assist you in choosing the right parts that fit your model and budget. If you have any questions or need assistance, please...
View BMW M Series Models Parts & Accessories Products
Brake Rotors
Brake rotors work with brake pads to bring your vehicle to a controlled stop. Upgrading from worn or stock rotors to a performance or OE-quality replacement improves braking consistency, reduces fade, and restores the original factory feel. Popular ProductsPopular brake rotor choices include EBC Brakes USR slotted rotors, Brembo OE-replacement rotors, StopTech Sport cross-drilled and slotted rotors, and Centric Premium rotors for OE-quality service replacement. What is the difference between slotted, drilled, and blank rotors?Blank rotors are standard OE-style with no machining, suitable for daily drivers. Slotted rotors have channels cut into the face for debris evacuation and improved high-heat performance. Cross-drilled and slotted rotors combine both features but may crack under extreme track use. How do I know when brake rotors need replacement?Replace rotors when rotor thickness falls below the minimum spec stamped on the rotor hat, when lateral runout exceeds 0.003 inches, or...
View Brake Rotors Products
Brake Rotors - 2 Piece
Welcome to our exclusive Brake Rotors - 2 Piece collection, where quality meets performance. Our carefully curated selection features top-of-the-line brake rotors designed to enhance your vehicle's braking system. Whether you're looking to upgrade your car for better performance or simply replace worn-out parts, this collection offers a variety of options to suit every driver’s needs. Why Choose Our Brake Rotors? Our Brake Rotors - 2 Piece collection includes products that are engineered for durability and superior braking power. Here are some key features: Enhanced Stopping Power: Get improved braking efficiency and safety. Premium Materials: Crafted from high-quality materials to withstand extreme conditions. Easy Installation: Designed for a straightforward installation process, perfect for DIY enthusiasts. Compatibility: Available for a wide range of vehicle makes and models. Explore Our Collection We offer a variety of styles and specifications within our Brake Rotors -...
View Brake Rotors - 2 Piece Products
Brakes
Performance Brakes, Brake Pads, Rotors & Big Brake Kits Shop premium performance brake parts, brake pads, brake rotors, big brake kits, brake calipers, brake line kits, stainless steel brake lines, brake hardware, brake master cylinders, brake drums, brake shoes, hand brakes, and brake adapters at Black Ops Auto Works. This collection is built for drivers who need dependable stopping power, improved pedal feel, fade resistance, and braking confidence for street performance, towing, daily driving, racing, off-road use, and custom builds. Whether you are upgrading a muscle car, truck, SUV, Jeep, Dodge, Ford, BMW, Audi, Nissan, Honda, Subaru, Lexus, Hyundai, Mazda, Infiniti, Toyota, or track-focused vehicle, our Brakes collection includes high-quality brake system components designed for fitment, durability, and performance. Brake Parts from Top Brands Shop trusted brake brands available in our catalog, including: DBA brake rotors EBC Brakes pads and rotors Hawk Performance brake ...
View Brakes Products
GiroDisc
GiroDisc manufactures premium two-piece floating brake rotors designed for performance street and track applications where reduced unsprung weight, superior thermal management, and consistent pedal feel under repeated hard braking are required. The two-piece design separates the cast iron friction ring from the aluminum hat using a patented floater system that allows the rotor to expand thermally without transmitting warping stress to the hub, eliminating the judder and pedal pulsation that single-piece rotors develop after repeated track sessions. GiroDisc rotors are available for a wide range of European and Japanese sports cars including Porsche, BMW M, Ferrari, Lamborghini, and the Subaru WRX, targeting enthusiasts and racers who demand the same engineering quality in their brake hardware as in their suspension and engine components. The significant weight reduction compared to equivalent cast iron rotors improves both acceleration and braking response by reducing the rotational...
View GiroDisc ProductsLet customers speak for us
Looks pretty nice
Looks pretty nice, pricing was good and the reinforcement is a big plus.
Randy H.
Black Ops Auto Works
I emailed customer service to inquire about when it would be shipped
I emailed customer service to inquire about when it would be shipped. They checked and emailed me with the answer. Customer service is A1
Ralph J.
Black Ops Auto Works
Installation was easy
Installation was easy. The price is good and it looks great on the truck.
Ralph J.
RHO Small Grille Badge
Looks as good as it fits
Looks as good as it fits,
zachary d.
Seibon 70-73 Datsun 240Z OE Carbon Fiber Hood
Nothing like it
I love it great sound and response
Luis P.
Legmaker Dodge Durango HEMI Short Ram CAI 2011-Present 5.7L
Car totally diferent with the whole kit
Car totally diferent with the whole kit. Ive stood next to wide bodies and my car gets more attention at times . Ive bought the kit twice already.
Ding D.
2015-2023 Dodge Charger Carbon Fiber Wind Splitters
Fantastic emblem! Exactly what I was looking for
Fantastic emblem! Exactly what I was looking for. Great quality emblem.
Jacobus S.
Direct Connection Black Metallic Fender Badge
Worked great for my aftermarket hood on my Chrysler 2023 300C
Worked great for my aftermarket hood on my Chrysler 2023 300C. Thanks
Robert G.
Windshield Washer Squirter Relocation Kit Universal
Easy to install and makes car sound even better
Easy to install and makes car sound even better love the winn
Tracy H.
Legmaker Challenger/Charger Hellcat Demon & Redeye Air Intake
Awesome customer support
Awesome customer support. Had multiple issues with fedex and these guys were excellent in helping me sort everything out. The drop springs are great too! I highly recommend
Anonymous
Swift Spec-R Lowering springs Jeep Grand Cherokee 2011-2021
100/100! perfect CF crafted cold air intake for 6
100/100! perfect CF crafted cold air intake for 6.4 jeep .. even makes my AWE exhaust sound even deeper and you cam here this thing sucking when accelerating even at normal speeds🥶
srt.boizzz
Legmaker 392 TH Short Ram Jeep Grand Cherokee SRT 2012-2021
