Upgrade disc brakes on TRIBAN RC500 Sora 9 speed to HY/RD. On the website it says it's only compatible with 11 speed. Have anyone used this combination already? Does it works well?
SHIMANO SORA R3000 Groupset Mechanical Disc Brake 2x9 Speed Road Bike IIIOPRO | eBay
SHIMANO SORA R3000 Groupset Mechanical Disc Brake 2x9 Speed Road Bike IIIOPRO | eBay