absoluteBLACK Chainring Oval 110/4BCD 38T Black

absoluteBLACK Premium Shimano 110/4 BCD compatible oval chainrings are designed for Shimano cranks Dura-Ace 9000, Ultegra 6800 & 105 5800. Super fast shifting and amazing smoothness of pedaling. It is the most Premium oval chainring on the market with scientifically proven performance gains. 10/11/12spd compatible.

Size (Mass +/-1g): 34T (31g), 36T (37g), 38T (41g), 50T (120g), 52T (137g), (53T - go to 9100 model)

Color: Black, Grey (inner ring in black only) Bolts are available in black only

Compatibility: Shimano Dura-Ace 9000, Ultegra 6800, Shimano 105 5800, Tiagra 4700. Compatible with Di2 & Pioneer, SRM and other power meters*

BOLTS: For Outer chainring please order Long bolts OR Bolt Covers. 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%, 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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