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Size (Mass +/-1g):
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34T (31g), 36T (37g), 38T (41g), 50T (120g), 52T (137g), (53T - go to 9100 model)
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Color
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Black, Grey (inner ring in black only) Bolts are available in black only
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Compatibility
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Shimano Dura-Ace 9000, Ultegra 6800, Shimano 105 5800, Tiagra 4700. Compatible with Di2 & Pioneer, SRM and other power meters*
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BOLTS
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For Outer chainring please order Long bolts OR Bolt Covers
Changing Inner chainring to oval only? use original bolts
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Material & Finish
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cnc machined 7075 Txxx Aluminum. Long-lasting construction. Type II anodizing
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Ovality
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Optimized to each size separately. 34T- 6.5% ; 36T- 11.4%, 38T- 11.4%, 50/52 - 10.3% ; Timing of 108 -109.5° after TDC (top dead center) - Ideal for road climbing. Patent Pending
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