"The EC90SL rings and crank and Easton PF30 bottom bracket performed flawlessly during our test—responsive and durable with great chain retention."
"...including bombing down stutter bump laden roads, the chain stayed on the ring. Considering there’s no clutch on the Ultegra derailleur, I’d say they work. Everything installed quickly and easily, too, which is always nice."
"There’s no question about it. The EC90 SL is a lightweight, stiff crankset offering that should please serious cyclocross racers.... Many cyclocross racers will spend $2k on a race day set of wheels and tires that saves 200g or less. Rolling resistance and rotating weight discussions aside, the Easton EC90 SL crank could save the same amount of weight (perhaps even more if you’re converting from a two chainring drivetrain) for less money, but you’ll enjoy the benefits on all your rides—not just race days."
EC90 SL Crank Tech Specs