Shimano Alfine S500 1x Crnk/Grd
Hollowtech-II (HT2): integrated bottom bracket spindle with right crank for increased rigidity, while left arm mounts to splined spindle Designed for HG super-narrow 11/128" (9sp) chains Single aluminum chainring (choose 39T or 45T) with external chaingua
Item Specifications:
Size:
39T/Guard
45T/Guard
Color:
Black
Silver