YBEKI 32T 34T 36T 38T Round Bicycle Chainring, Narrow Width Chainrings 104 BCD for Road Bike Mountain BMX MTB

1. 【Aerospace-Grade 7075-T6 Aluminum Alloy】30% Stronger Than 6061 – CNC-machined from 7075-T6 aluminum (572MPa tensile strength) for extreme durability. Military-Grade Hard Anodization – HV800 surface hardness resists wear 3x longer than standard chainrings. Precision 5-Axis CNC Machining – ±0.01mm tooth tolerance (ISO 13041 certified). Compatibility: Compatible with 104BCD Single Bike Chainring Shimano/SRAM 8-11 Speed MTB/Road Bikes  2. 【Advanced Anti-Drop Chain Retention】Narrow-Wide Tooth Profile – Alternating 7.3mm/6.8mm teeth securely grip 8-11 speed chains, reducing drops by 92%. Dynamic Chamfer Technology – 45% faster chain engagement for responsive pedaling on rough terrain. Extended Tooth Tips – Enhanced stability for aggressive MTB/road cycling. 3. 【Ultra-Lightweight & High-Stiffness Design】3D Hollow Structure – 63% lighter than steel, with asymmetric ribs for 155Nm/deg lateral stiffness. Optimized Power Transfer – 98.7% efficiency for climbing and sprinting.1kg Total Weight Reduction – Boosts bike agility without sacrificing strength. 4. 【Pro-Level Performance Features】Mirror-Polished Teeth – 0.09μ ultra-low friction minimizes energy loss. Self-Cleaning Grooves – Reduces mud buildup by 70% in wet/dirty conditions. Dual Anodized Finishes – Matte black (ceramic-coated) (UV-resistant) for lasting color. 5.【British Rider Guarantee】24-month promise - free replacement in the event of oxidation or non-human damage (industry-leading), Next-day replacement from Leeds warehouse, UK-based tech support (Mon-Fri 9am-9pm)