An aluminium rear disc rotor to fit a Honda RS125 wheel. These wheels are often used on MZ race bikes and this disc gives a useful weight saving.
 
Laser cut in 3mm thick aluminium, these are oversize with a 210mm OD. This allows you to fit a wider range of callipers. 
 
Please Note: These are not suitable for use on road going bikes where the back brake is regularly used.