Parameter: 1. Weight: 50T 85g, 52T 88g, 54T 92g, 56T 98g, 58T 103g 2. BCD: 130 mm 3. Material: aluminum alloy 4. Diameter: 50T 208 mm, 52T 216 mm, 54T 224 mm, 56T 231 mm, 58T 242 mm 5. Application: 16-inch folding bicycles generally do not exceed 53T, 20-inch folding bicycles generally do not exceed 56T (adjust according to personal circumstances) 5. Specifications: 50T, 52T, 54T, 56T, 58T 6. Color: black, red, silver, colorful Features: 1. Fully hollow and lightweight design, lightweight and practical 2. Full CNC cutting, strong and durable 3. The length of the extended tooth is 7.2mm, the chance of chain drop is small 4. Thicken the disc thickness by 4 mm, better rigidity 5. Positive and negative tooth design, not easy to drop the chain, arc transition of the connecting position, not easy to accumulate sand 6. Easy to install Description: 1. The larger the number of teeth of the disc, the larger the diameter, the faster the relative riding, and the harder it will be 2. When choosing a disc with a large number of teeth, please make sure that its diameter will not rub against the frame, otherwise you need to replace a longer bottom bracket 3. The compatible chain speed is 9/10/11 speed. In addition, change the large number of teeth disc, the chain must be lengthened 4. Please make sure that the BCD is 130 mm 5. BCD is the circle surrounded by 5 holes of the crank. The diameter of this circle is 65mm from the crank hole to the crank center. (Note the distance on the plane on the side of the chainring)
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