SHIMANO SM-CRE70-12-B CG chainring

Chainring For 12-Speed Drive Units With A Modern Design Shimano´s Sm-Cre70-B Chainring For Shimano Steps Features A Modern Design For 12-Speed Drive Units. Specifications: - Remarks: Compatible Chain Cn-M9100 Cn-M8100 Cn-M7100 Cn-M6100 - Chainring Fixing Lock Nut: Included In Drive Unit - Chain Line (Mm)53: Yes - Chain Guard Type W/O Chain Guard: Yes - Gear Speed: 1 - Rear Speed 12-Speed: Yes - Spider/Gear Arms: 4 - Chain Device Compatible: Yes - P.C.D. (Mm): 104 - Chainring Teeth 36t: Yes - Chain Line (Mm) 55: X (New) Technology: Dynamic Chain Engagement: - Special Gear Teeth Function Shimano’S Dynamic Chain Engagement+ Is A Special Gear Teeth Profile Designed For Use In Single-Chainring Configurations For Xc, Enduro, And Trail Riding. It Gives More Chain Retention And Smoother Pedaling - Even Over Bumpy Terrain. Chain Retention Of Any Gear Will Reduce Abrasion And Worn Out.