Blackspire MTB SUPER PRO chain rings are designed for 9, 10 and 11 speed MTB drivetrain systems. They are CNC milled from 7075 T-6 aluminum. On the outer and middle rings, stainless steel pins are placed to improve the shifting performance. These rings are available in different teeth options and BCD sizes for both 4- and 5-arm cranksets.
CNCd 7075 T-6
Modified shift gates and special profiles to allow 9 and 10 speed chains to shift flawlessly
Middle and Outer chainrings have strategically placed stainless steel pins to further enhance shifting
Middle chainrings are cut from thick .190″ material