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Unit | NOS |
Country of Origin | POLAND |
Size (Mass +/-1g) | 50T (120g) |
Color | PVD Rainbow |
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 |