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Make gearing adjustments a CINCH.
The Easton EC90 SL Road Chainring/Spider Assembly is designed around the EC90 SL Crankset. Easton did away with the standard crank spider and ensuing spider-mounted chainrings of old. Utilizing Race Face's Cinch technology, this crankset uses Direct Mount 1x or 2x spiders, dropping grams and eeking out every last watt that you generate. This revolutionary new design makes fine-tuning your 1x setup to suit the course after a pre-ride, or converting your 'cross bike to a winter road bike at the end of the season as easy as a few turns of a wrench.
The Easton EC90 SL Road Chainring/Spider Assembly is available as a 53x39T (255g), 52x36T (243g), or 50x34T (227g) direct-mount spider.
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Shift good, stiffness may be an issue for strong riders
by Seattle dave
They shift great, just a touch slower than Shimano DA, but no issues there. I run the 52t up front, and I feel the big ring is too flimsy under high load. When sitting in the big ring and a small cog, if I jump on a max effort sprint, the chain would often slip off the front ring on the outboard side with a snap, as if the chain angle to the small cog in the back was forcing the chain off the ring, maybe combined with the ring deflecting outboard. I adjusted the front drailleur (Etap) so that it would gently rub on the outboard side, even then, tHe chain still pops off under high torque. Plan to try aftermarket rings to see if it helps.
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