Blackspire MTB SUPER PRO chainrings are designed for 9, 10 and 11 speed MTB drive systems. This chainring is CNC machined from 7075 T-6 aluminum. Stainless steel pins are placed on the outer and middle tooth blades to improve shifting performance. These chainrings are available in different teeth and BCD sizes for both 4- and 5-arm cranksets.
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