item:Bike Front Derailleur ,Scope of application: 3 speed crankset(Protection + variable speed),6/7/8/9/10/11speed cassette, 48T crankset MAX. The wiring method of the front derailleur : pull up(Top pull )or drop pull .chain line:47.5/50mm
main function: provides smooth running, moving the bike chain from one sprocket to another with little abrasion.
Note: We come with a gasket. In the case of using gaskets, it is suitable for 31.8mm seat tube. It is suitable for 34.9mm seat tube pipes without the use of gaskets. Please choose whether you need to use gaskets according to your seat tube situation.
Material:this Front Derailleur is mainly composed of hard aluminum materials and steel materials. aluminum construction lowers weight without sacrificing durability.The small spacers included are made of high-quality plastic.
Boosting the cycling speed stably with the perfectly hinging between the derailleur and the bike chain