Product Brief | Cast-Iron Brake Disc – Toyota Fitment

1. Engineered for Toyota
   Disc is machined from GG25 high-carbon cast iron to match OE chemistry, thermal capacity and NVH be haviour on the most popular Toyota platforms:
   • Corolla E140/E210 2014-2025
   • Camry XV70/XV80 2017-2025
   • RAV4 XA50/XA60 2019-2025
   • Highlander XU70 2020-2025
   • Hilux/Fortuner AN120/150 2016-2025
   (Front axle 296 mm × 28 mm; rear 291 mm × 18 mm are the two best-selling sizes; other diameters 255-338 mm available.)

2. Key Specifications
   Material: GG25 cast iron, 3.7 % graphite, 0.75 % Cu micro-alloy
   Hardness: 190-220 HB
   Tensile strength: ≥ 245 MPa
   Damping ratio: 6.2 × 10⁻³ (OE grade)
   Max working temp.: 700 °C
   Surface: Black Geomet® 321 coating, 8 µm, 800 h salt-spray
   Run-out tolerance: ≤ 0.03 mm
   Imbalance: ≤ 0.8 g·cm
   Weight: 5.9 kg (296 mm disc) – identical to Toyota OE

3. Features that matter
   • Directional curved vanes (48 pcs) increase airflow 18 % vs. straight-vane designs → 45 °C lower peak temp. during 10-stop fade test.
   • 50 µm-turned surface finish – bed-in within 150 km, zero judder on first brake.
   • Laser-etched Toyota-compatible OE numbers (e.g. 84611-0C010) + batch QR for 100 % traceability.
   • CNC double-disc grinding keeps DTV (disc thickness variation) ≤ 0.007 mm, eliminating cold squeal.

4. Validation / Performance
   • AK-master fade: ≤ 5 % loss at 0.6 g decel, 700 °C.
   • Wear rate: 1.9 µm/1000 km (NAO pad), life +30 % vs. budget discs.
   • Drift test: 80 → 0 km/h, 100 stops, deviation < 0.8 m.
   • Dynamometer: 500 h salt-slurry, no through-rust on friction faces.
   • Road—100 k km Guangzhou taxi fleet: zero warping, no pedal pulsation.

5. Packaging & Logistic
   • E-coated disc → PE sleeve → molded pulp tray → 5-ply carton, pass 1 m drop test.
   • Neutral or custom colour label; EAN-13, Amazon FNSKU, Datamatrix available.
   • 20 ft GP loads 3 200 pcs (front only) or 2 600 sets (front+rear) on standard 1.1 m pallet