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Feature

OVAL RINGS "Proudly" Made-in-the-USA / Fits Shimano Dura-Ace 9000, Ultegra 6800, Shimano 105 5800, Tiagra 4700, etc. (Compatible with Di2 & Pioneer, SRM and other power meters)
Unique Sharktooth - No Chain Drop tooth profile for all conditions chain retention
Fully CNC machined with 6061-T6 aircraft alloy for lightweight strength
Manufactured in plant certified to ISO 9001:2008 standard / Teflon coated surface treatment provides quiet and friction free service
8, 9,10 and 11-speed drivetrain compatible

Description

USAmade OVAL 110mm 4-BOLT SHARKTOOTH Road / CrossChainring Black Anodized Finish 5 Bolt Ramped and Pinned for shifting- NEW Performance Driven- Made in the U.S.A. (53T, 52T, 50T, 38T, 36T, 34T) ADVANTAGES OF OUR OVAL CHAINRINGS: Our Oval chainrings maximize rider efficiency by leveraging your pedal stroke where your power is produced and reducing resistance where your power is least. Oval rings allow you to climb easier and faster with less fatigue. They offer a consistent power delivery that allows you to maintain an even cadence and a higher output level for longer periods of time. Oval rings provide a smoother feel on your legs during climbing Higher average speeds have also been achieved in various studies. The power output attained during intermittent maximal sprints in one study was 2.4% - 6.7% greater with non-circular (Oval) chainrings.