Description
Quarq Prime Power Ready Crankset 11 Speed 165mm 53 39T 130BCD GXP subcategory chain Orbea Orca 51cm Frameset Orbea Orca 51cm Frameset 2007 They have developed and refined the 1x technology so things like the sharp and narrow tooth profile as well as beveled edges help the X Synch chainring to prevent chain defection