How about one crankset for your road or cyclocross bike that will work with a single ring, or a double, practically whatever bottom bracket standard, and still comes in at a competitively low weight? Easton just made it happen with their EC90 SL cranks.
All courses and fitness levels are covered with chain-holding narrow/wide chainrings offered in 38, 40, 42, 44, 46, 48 and 50T: All courses and fitness levels are covered with chain-holding narrow/wide chainrings offered in 38, 40, 42, 44, 46, 48 and 50TCourtesy
Easton takes some pointers from its mountain bike focused sister company, Race Face, to craft their hugely compatible EC90 SL carbon cranks. The secret lies with the Cinch chainring attachment system. The Cinch system allows various single ring sizes, as well as single and double ring set ups with the attachment of a chainring spider. Switching rings is pretty painless, just unthread the crank bolt and Cinch lockring and swap in the right size ring.
Bolt on a chainring spider and choose between 53/39, 52/36, and 50/34 optionsCourtesy
On their single rings, Easton also revised the narrow/wide chainring tooth profile. They claim the updated profile optimizes chain retention, reduces running noise and minimizes friction for road and cross bikes. All good things as the latter two are much more noticeable on quieter road and cross bikes than they are on a typically louder mountain bike.
Easton claims the new chainring tooth profile enhances chain retention while limiting noise and frictionCourtesy
Even though the EC90 SL cranks come in at an aggressive 442g for a 172.5mm with a single 40T ring, Easton states the durability is there for nasty off-season training rides and daily commuting torture. In conjunction with the new cranks, Easton is also releasing a line of bottom brackets.
EC90 SL cranks
Pricing and availability
1x Crankset without BB — $449 USD ($599 CDN) — Early August
2x Crankset without BB — $499 USD ($664 CDN) — Fall 2016
Single DM Rings $74 to $94 USD — ($99–$124 CDN) — Early August