Shimano RD-M3020 ACERA 7/8-SPEED BLACK 40T MAX

The SHIMANO ACERA M3020 - 8 Double Servo rear derailleur is a game - changer. It offers smooth and precise shifting, allowing you to tackle challenging terrains with minimal interruptions. Its wide - range capability makes it a great choice for all riders.

Using this Shimano rear derailleur is easy. First, make sure it's properly installed on your bike. When shifting gears, just use your shifter to move the chain across the gears. The derailleur will do the rest with smooth and precise movement. For maintenance, keep it clean. You can use a soft brush and some bike - specific cleaner to remove dirt and grime. Lubricate the moving parts regularly to ensure long - lasting performance. Also, check the tension of the cables from time to time. If you notice any issues like rough shifting or misalignment, it's a good idea to take it to a professional bike mechanic for a tune - up.