SHIMANO HG51 8-Speed Cassette Review Posted by Pelicandy October 22, 2018 in Drivetrain Components 8-Speed Precise and consistent HyperGlide shifting performance. Long leg spacer for further weight reduction. Enlarged sprocket window design for lighter weight. Random Products KMC Single Speed 1/2 X 1/8 X 112 Link Bicycle Chai... ACS Crossfire Chain, 106-Links, Black/Nickel Revie... VGEBY Mountain Bike Bottom Bracket Shell 68/92MM B... KMC X11SL DLC/CELEST-116L Review Cycling Outdoor Recreation Parts & Components SHIMANO Sports & Outdoors