How To Know When To Change Your Chain, Cassette And Chainrings
[embedyt] https://www.youtube.com/watch?v=8LqTmvuf6tw&cc_lang_pref=fr&cc_load_policy=1[/embedyt]
Do I Need A Short, Medium Or Long Cage Rear Derailleur? | Maintenance Tips
[embedyt] http://www.youtube.com/watch?v=ohCqDqoNZKU&cc_lang_pref=fr&cc_load_policy=1[/embedyt]