Our Premium Shimano 110/4 bcd oval chainrings are designed for new type of Shimano cranks like Dura-Ace 9000, Ultegra 6800, 105- 5800 and others. These are finest shift-able oval chainrings on the market.
Compatibility: Shimano Dura-Ace 9000, Ultegra 6800, Shimano 105 5800, Tiagra 4700. Compatible with Di2 & Pioneer, SRM and other power meters
For Outer chainring please order Long bolts
Changing Inner chainring to oval only? use original bolts
Material & Finish: CNC machined 7075 Txxx Aluminum. Long-lasting construction. Type II anodizing
Ovality: Optimized to each size separately. 34T- 6.5% ; 36T- 11.4%, 50/52 - 10.3% ; Timing of 108 -109.5° after TDC (top dead center)
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