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Easton EC90 SL Road Chainring/Spider Assembly

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The EC90 SL Road Chainring/Spider Assembly is designed around the EC90 SL crankset, this versatile system utilizes RaceFace's Cinch technology, replacing the traditional crank spider and ensuing spider-mounted chainrings with direct mount 1x or 2x spiders. Pre-ride a cyclocross course and swap out for a larger or smaller spider on the fly to suit the course or the competition. Swap the 1x spider out for a 2x spider and make that same 'cross race bike a road riding machine.

Developed with rigorous lab testing, Easton went through seven rounds of revision to ultimately land on this final product. Heavily machined for weight savings and superior stiffness, the EC90 SL chainrings deliver excellent shifting performance with the optimized shift ramps and pins. Utilizing the CINCH system, swapping out the direct-mount rings is as easy as loosening the drive side crank arm and sliding the spider off the crank spindle.

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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Reviewed 4/10/2018
by Seattle dave
Cycling Enthusiast
Value Rating
Overall Rating
1 of 1 customers found this review helpful.
Shift good, stiffness may be an issue for strong riders

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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