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YBEKI 2-Pack CNC-Machined Bike Disc Brake Rotor Set | 160/180mm 6-Hole Stainless Steel Rotors with Heat Dissipation Holes & 12 Titanium-Coated Bolts | EN 14766 Certified for MTB/Road/BMX Bikes 
  • 1【 Advanced Heat Dissipation System】Patented Oblique Long Hollow Design: Lots CNC-machined heat dissipation holes enhance airflow by 200%, reducing braking system temperature by 40%, 12-Spoke Edge Support Structure: Minimizes warping + Wave-shaped drainage grooves eject mud/water instantly, Rotor Tech: Allows 0.8mm thermal expansion space to prevent high-temperature deformation 
  • 2【 Aerospace-Grade Manufacturing Precision】5-Axis CNC Machined (Tolerance ±0.05mm), 420 Martensitic Stainless Steel Baseplate (40±2 HRC Hardness), MIL-SPEC Triple-Layer Anodization (2000h Salt Spray Test Certified), Radial Mirror Polishing (Surface Roughness Ra≤0.8μm) 
  • 3【 Ultra-Lightweight Durable Construction】Honeycomb Lightweight Tech: 28% lighter than conventional rotors (160mm:97g / 180mm:132g ), 6-Bolt Reinforcement System: 304 Stainless Steel Anti-Loosening Screws (6-8N·m Torque), Triple-Layer Composite: 1.5mm SS + 2mm Aluminum Alloy Shim + 0.5mm Anti-Corrosion Coating, EN 14766 MTB Certification Approved 
  • 4【Precision Sizing Guide】▷ 160mm (6.29") - XC Cycling/Road Bikes/Teen Bikes, ▷ 180mm (7.08") - All-Mountain/Enduro Riding, ◆ Includes 12 Titanium-Coated M6×16mm Screws (10.9 Grade Tensile Strength), Color Guarantee: Cerakote Ceramic Coating (5-Year Fade Resistance) 
  • 5. 【Hassle-Free Lifetime Support】12-Month "Zero Rust" Promise – Free replacement if oxidation occurs, 24/7 Expert Support – US-based mechanics answer questions within 4 hours, Fast Replacement: Defective parts replaced within 48 hours

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