Shimano Cues FC-U4000 1x Chainset - 9/10/11-SP - 170 mm (30T) Size: 30

Superior Chain Retention And Power Transfer For Fun Riding Over The Rough Stuff Grow Your Confidence Riding Hard Over The Rough Stuff With This Crankset´s Wide-Range Gearing And Seamless Pedaling.Features:- Special Gear Tip Shape Improves Chain Engagement And Retention For Smooth Riding Over Rough TerrainSpecifications:- Rear Speeds: 11/10/9- Compatible Chain: Link glide, Hg 11-Speed- P.C.D. (Mm): Riveted- Spider/Gear Arms: 4- Chainring Combination: 30t, 32t, 40t, 42t- Optional Chain Guard|With Chain Guard: X (40t, 42t)- Optional Chain Guard|Without Chain/Bash Guard: Yes- Compatible Bottom Bracket Type|Square: Yes- Stainless Chain Guard Fixing Screw: Yes- Crank Fixing Screw Included: YesTechnology: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