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approach to wheel design: overcoming specific barriers to speed: wind resistance
and $10 donation to trail maintenance or advocacy group of your choice
or aggressive road riding
Do this quite regularly
and do more on their bikes
X-Sync Road Chainring Optie:CHAIN RING ROAD 40T 107BCD X-SYNC BLAST BLACK approach to wheel design: overcomingSRAM X SYNC wide tooth, narrow tooth chainring technology provides maximum chain control Laser etched chainring finish is more durable X Range gearing technology gives you more range and a smoother gear progression, so youre always in the right gear Improved aerodynamics for time trial and triathlon Chainring Size: 36T, 38T, 40T, 42T, 44T, 46T, 48T, 50T, 46 33T, 48 35T, 50 37T Bolt Circle Diameter (BCD): 107mm or Direct Mount (DM) Speeds: 12 Compat