Shimano Sora FC-R3000 Compact 2 x 9 Speed Crankset - 50 / 34t - 170mm ArmShimano Sora FC R3000 Compact 2 x 9 Speed Crankset 50 34t 170mm Arm As Shimanos first class 9 speed road bike groupset, SORA is pitched towards sports fitness cyclists. The compact 50 34T crankset can now be combined with a large range 11 34T cassettes, an accommodating rear derailleur and a long arm front derailleur. Spinning up hills suddenly got easier with two extra teeth over the previous SORA, while the small 11T sprocket makes sure you have