Race Face Ride Cranks CK19RID137ARM170BLK

- Forged 6066 aluminum arms at a great price \n- Proprietary Cinch system removable spider can convert between existing chainring standards and Direct Mount spiderless rings, and even remain flexible to future developments\n- Choose a spider or use a Race Face Direct Mount Narrow Wide ring (sold separately)\n- *BB sold separately, use RF-2925 for English 68/73mm shell