[YZF 125R ABS 2016 Rear brake disc and pads]

Having retired from biking due to old age and stiff vertebrae, l find myself volunteered to replace the above for my grandson

Can anybody point me to a tutorial or better still video showing how it's done please?

I did maintain all my previous bikes, T140V Bonneville, 850 Commando and DBD34 Rocket Gold Star so no averse to spinning the spanners

Thanks for reading