Bicycle chain guide,bmx bike chain,current 12 X12 X11 11V X10 10V X9 X8 chain speed Bicycle accessories

Model: X12 Dimensions: 1/2" X 11/128" Link: 126 Links Color: Silver/Gold/Black Gold/Silver Black Connector: Missing Link 10R/CL559R Compatible: 10-Speed Drivetrain System Feature -Super Strong Fitting Force, Hydraulic Riveting Technology -High Rigidity, Instant Transfer Efficiency, Maintain Efficient Transmission -2X-SP Wear Resistance Technology -Patented Double X-bridge Design, Precise and Agile Shifting Performance -The Guide Angle Design of The Inner Chain Can Improve The Speed Change Performance -The Guide Angle Design of The Outer Chain Piece Increases The Smoothness of Shifting