This is a Shimano Ultegra 8000 11-Speed Chainring for the inner position available in 39 or 36 tooth for a standard 53/39 chainring combination or a mid-compact 52/36 combination, respectively. It utilizes Shimano's proprietary asymmetrical 110mm bolt circle diameter.
Color: Dark Gray
Teeth: 39 and 36 tooth
Chainring BCD: 110 Asym
Ring Position: Inner
Chain Compatibility: Shimano 11
This product is expected to become available for purchase on Friday, September 3, 2021