SHIMANO SM-CRE80-12-B CG chainring

Lightweight 12-Speed Chainring For Smoother Pedaling And Better Chain Retention Over Bumpy Terrain Shimano´s Lightweight And Modern-Looking Sm-Cre80-12-B Chainring Features Shimano Dynamic Chain Engagement+ For Smoother Pedaling And Better Chain Retention Over Bumpy Terrain. Features: - Dynamic Chain Engagement+ Specifications: - Chain Line (Mm)_55: Yes - Chain Guard Type_W/O Chain Guard: Yes - Chainring Teeth_38t: Yes - Dynamic Chain Engagement+: Yes - Gear Speed: 1 - Rear Speed_12-Speed: Yes - Spider/Gear Arms: 4 - Chain Device Compatible: Yes - P.C.D. (Mm): 104 - Chainring Teeth_34t: Yes - Chainring Teeth_36t: Yes Technology: - Dynamic Chain Engagement+: 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.