Blackspire Super Pro MTB

•  High-quality chainrings designed for 9, 10, 11 or 12-speed mountain and touring bikes 
  
• Manufactured right here in Canada from super-strong 7075 aluminum, CNC machined and T6 heat-treated
  
• The middle rings are cut from 0.190"-thick plate and the outer rings from 0.160"-thick plate
  
• Revised shift ramps and specially profiled teeth to increase shifting speed and smoothness 
  
• The outer and middle chainrings include stainless steel pins positioned at strategic locations to facilitate shifting from the middle to the large chainring and speed up gear changes
  
• The 38T/40T chainrings are only compatible with 2x drivetrains (the 38T version requires a 24T/26T inner ring / the 40T version requires a 26T/28T inner ring) 
  
• Black anodized finish with laser-etched graphics 

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