SKU: A2-186
GiroDisc 14-20 BMW M2/M3/M4 (F8X w/Blue Calipers) 380mm Slotted Rear Rotors
GiroDisc 380mm slotted rear rotors deliver direct replacement braking for 2014-2020 BMW M2/M3/M4 F8X chassis vehicles with blue calipers. The 2-piece construction sheds over 10 pounds of unsprung weight per pair versus OEM while channeling heat away from hats to maintain pad bite. Drivers gain reliable fade-free stops during aggressive track sessions or daily drives.
Key Features
- 2-Piece Floating Design: 6061-T6 forged aluminum hats isolate heat from braking surfaces to reduce warping risk and extend component life
- 380 x 30mm Dimensions: Matches OEM specs for seamless caliper fit with 72 curved vanes directing airflow
- Slotted Friction Ring: 72mm x 5mm slots expel brake gases water pad residue for consistent contact and shorter stopping distances
- Weight Savings: 5.2 lbs lighter per rotor than stock 27.5 lb OEM units improving suspension response acceleration handling
- High-Carbon Alloy Iron: Resists cracking under high loads with black anodized hats resisting corrosion for long-term durability
Product Notes
- Pair of rotors included designed as bolt-on OEM replacement no chassis modifications required
- Bed-in rotors with GiroDisc or compatible pads following manufacturer procedure for peak performance
- Packaged in protective boxes measuring 42 x 14 x 14 inches for safe transit
Installation Notes
- Professional installation recommended.
- Use torque wrench to OEM specs on caliper bolts and hub nuts
- Retains compatibility with factory hardware pads and blue calipers
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2016-2021 | BMW | M2 | F87 w/ Blue Calipers |
| 2015-2018 | BMW | M3 Sedan | F80 w/ Blue Calipers |
| 2015-2020 | BMW | M4 Coupe | F82 w/ Blue Calipers |
| 2015-2021 | BMW | M4 Convertible | F83 w/ Blue Calipers |
Why Choose GiroDisc?
- USA-engineered with racing-proven 2-piece technology used in pro series worldwide
- Machined from premium materials for exact F8X fitment and sustained high-heat performance
- Delivers measurable gains in rotor life pad efficiency through advanced venting geometry
Frequently Asked Questions
-
Q: Do these rotors fit 2018 BMW M4 Competition with blue calipers?
A: Yes direct bolt-on for all 2015-2020 F82 M4 models including Base Competition CS with factory blue calipers and 380mm rears -
Q: What materials are used in construction?
A: High-carbon alloy cast iron friction rings paired with 6061-T6 forged aluminum hats black anodized for strength thermal isolation corrosion resistance -
Q: What warranty coverage applies?
A: Limited lifetime warranty covers defects warping under normal street track use excludes abuse improper bedding
Shipping & Handling
- Method: UPS Ground Freight
- Availability: In stock - ships same or next business day
- Packaging: Custom protective boxes 42 x 14 x 14 inches
- Weight: 48 lbs
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