Oval Road 110/4 BCD Chainring for Shimano Dura-Ace R9100 / Ultegra 8000 / 105 R7000, Champagne
absoluteBLACK Premium Shimano 110/4 bcd compatible oval chainrings are designed for new type of Shimano cranks Dura-Ace 9100, Ultegra 8000 & 105 R7000.
Super fast shifting and amazing smoothness of pedaling. (They can be also retrofitted to 9000 and 6800 cranks).
It is the most Premium oval chainring on the market with scientifically proven performance gains.
Size: (Mass +/-1g): 34T (31g), 36T (37g), 39T (42g), 50T (120g), 52T (137g), 53T(139g)
Colors:Black, Grey, Champagne (inner ring in black only) Bolts are available in black only
Compatibility Shimano Dura-Ace 9100, R9120, R9150 & R9170 Di2 and Ultegra 8000, R8020, R8050 & 8070 Di2, 105- R7000, R7020, R7070. They can also retrofit all 9000 and 6800 series cranks but use bolt covers for best appearance. 10 / 11 / 12spd compatible.
BOLTS For Outer chainring please order "Long bolts" from us OR Bolt Covers
Changing Inner chainring to oval only? use original bolts
Material & Finish: cnc machined 7075 Txxx Aluminum. Long-lasting construction. Physical Vapour Deposition
Ovality Optimized to each size separately. 34T- 6.5% ; 36T, 38T, 39T- 11.4%, 50/52/53T - 10-11.2% ; Timing of 108 -110.5° after TDC (top dead center) - Ideal for road climbing. Patent Pending