BESNIN Bike Levers Shifter 3×10 with Bike Front Derailleur and Bike Rear Derailleur Enhanced edition set (The 3rd link set package 3×10speed) : Amazon.co.uk: Sports & Outdoors
PERFETSELL 2 pcs Bicycle Rear Derailleur Guard,4.52" Steel Iron Bike Rack Protector Adjustable Cycling Rear Derailleur Chain Protective Guard for Outdoor Mountain Road Cycling Bike : Amazon.co.uk: Sports & Outdoors
Complete guide to rear derailleurs: everything you need to know - BikeRadar
WMLBK Bike Rear Derailleur, Speed Rear Derailleur, 6/7/8 Speed Bicycle Derailleur Transmission for Outdoor Cycling MTB Bike : Amazon.co.uk: Sports & Outdoors
How to – MTB Shifters & Derailleurs:... | bike-components