![Amazon.com : SHIMANO ALFINE 9-Speed Bicycle Crankset with Chain Guard - FC-S501 (Black - 170 x 45T W/Single Ring,W/CG,W/BB,BSA) : Sports & Outdoors Amazon.com : SHIMANO ALFINE 9-Speed Bicycle Crankset with Chain Guard - FC-S501 (Black - 170 x 45T W/Single Ring,W/CG,W/BB,BSA) : Sports & Outdoors](https://m.media-amazon.com/images/I/618zr6CPr-L._AC_UF1000,1000_QL80_.jpg)
Amazon.com : SHIMANO ALFINE 9-Speed Bicycle Crankset with Chain Guard - FC-S501 (Black - 170 x 45T W/Single Ring,W/CG,W/BB,BSA) : Sports & Outdoors
![Universal Cycles -- Shimano FC-S501 Alfine Cranksets [EFCS501CA9C1L, EFCS501CB2C1L, EFCS501CB5C1L, EFCS501CA9C1S, EFCS501CB2C1S] Universal Cycles -- Shimano FC-S501 Alfine Cranksets [EFCS501CA9C1L, EFCS501CB2C1L, EFCS501CB5C1L, EFCS501CA9C1S, EFCS501CB2C1S]](https://www.universalcycles.com/images/products/large2/75199.jpg)
Universal Cycles -- Shimano FC-S501 Alfine Cranksets [EFCS501CA9C1L, EFCS501CB2C1L, EFCS501CB5C1L, EFCS501CA9C1S, EFCS501CB2C1S]
![Shimano Alfine FC-S501 Hollowtech II crankset. Available in 39T, 42T, & 45T with optional single or double chainguards. 130 BCD | Shimano, Frame Shimano Alfine FC-S501 Hollowtech II crankset. Available in 39T, 42T, & 45T with optional single or double chainguards. 130 BCD | Shimano, Frame](https://i.pinimg.com/736x/6a/b1/75/6ab1759225e1fc466e8c7878a7d07ff8.jpg)
Shimano Alfine FC-S501 Hollowtech II crankset. Available in 39T, 42T, & 45T with optional single or double chainguards. 130 BCD | Shimano, Frame
![Shimano Alfine S501 Chainring Guards (Black) (130mm BCD) (Outer) (45T) - Y1HD61010 - In The Know Cycling Shimano Alfine S501 Chainring Guards (Black) (130mm BCD) (Outer) (45T) - Y1HD61010 - In The Know Cycling](https://intheknowcycling.com/wp-content/uploads/2021/03/Shimano-Alfine-S501-Outer-Chainring-Guard-Black-45T-130mm-Y1HD61010.jpg)