We have found these aluminium cnc machined sprockets outlast the cheap stamped out steel sprockets,
They are cnc machined from a hard wearing aluminium and are a precise fit, they also look better than steel
and best of all nearly 2kg lighter. These are ideal for the 530 upgrade used with the front offset sprocket.
We can also supply 530 chain and front sprocket to complete the 530 conversion. 530 only.
To convert from 630 to 530 and retain the same ratio divide by 5 and multiply by 6, so a 630 sprocket
with 35 teeth would need 42 teeth in a 530.