Folding bike integrated protection chain wheel single speed 130BCD 45T 47T 53T 56T 58T chainring for brompton BMX universal
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, if you change a large number of teeth, the chain must be lengthened! Be sure to confirm that the BCD is 130mm before purchasing!