The Blackspire MTB Super Pro chainrings are made from CNC-machined 7075 T-6 aluminum. This chainring variant is specifically designed for use with the SHIMANO FC-M970 crankset. Modified shift gates and special profiles enable flawless shifting. The middle and outer chainrings have strategically placed stainless steel pins to further improve shifting.

• For use with 9 or 10-speed drivetrains.
• 104/38t and 104/40t chainrings for 2x drivetrains.
• Anodized finish with laser etched graphics.
• For best performance, use only Blackspire SuperPro chainrings as a set.
• These chainrings will not work when used in conjunction with chainrings from other brands.
• 38t and 40t are only designed for use with 2x drivetrains.
• 38t requires small inner chainring of 24t or 26t.
• 40t requires small inner chainring of 26t or 28t.
• Item number: 970-6428
• EAN: 5060276562966
• Brands: Blackspire
• Model: SUPER PRO
• Type: XTR
• Material: Aluminum
• Bicycle type: Mountain bike
• Pitch (mm): 64
• Number of teeth: 28
• Color: Black