HG51 Shimano cassette, 8-voudig

Exactly what I ordered

Svolge egregiamente la propria funzione, lo consiglio

La relación que maneja permite mayor rendimiento, pero depende de tus conversión

I rubbed enough grease off my old cassette to see it is marked HG-50 on the lockring and the cassette is sort of a bronze color. This HG-51 is more like a chrome finish. Maybe this HG-51 is a newer and/or better version of my original equipment HG-50? Anyway, my main problem with my old drivetrain (around 3,500 miles) is sort of a grinding sensation with noise only when using the 8th cog (11 teeth) with either my middle or big chainring. It got a lot better after I put on a new chain and new chainrings, but it was stilI noticeable. I rarely used the 8th cog on my old cassette, so can't figure why that cog only would be worn enough to give me grief while the rest of the cassette cogs ran smooth as silk in silence. But maybe it was poorly machined or maybe it's just that total smoothness on an 11-tooth cog is asking a little much. UPDATE - admittedly I have only done 20 miles on this new cassette, but my impressions: 1) mounted easy enough using a chain whip and sprocket tool. 2) my original HG 50 was more quiet on cogs 4-7 but not the smallest 8th gear. It was really grinding then skipped a tooth once after I put the new chain on a few weeks ago. This new cassette got rid of the 8th gear issues almost 100% but it is not as smooth as gears 4-7. Maybe the 11-tooth 8th gear was bad on my original cassette. Why? No idea, I rarely used that gear even on the street because with only 11 teeth, when on the big front ring I had to stand up and pedal to maintain a pace even on flat ground. I primarily used cogs 4-7 and again, those were still quiet and working well with the new chain and front chainrings. But people said with 3,500 miles and a noisy worn chain, do the chainrings, chain, and cassette, so that I did. Bottom line maybe this new cassette needs to work a while with my new chain to smooth things out. I'll see. Shifting thru the gears up and down is fine, but my old cassette was not giving me any grief on shifting either. I'll update further at maybe 100 miles.

Alte Kassette demontiert und durch neue ersetzt. Das ganze ohne Probleme. Das Rad und die Schaltung läuft wie neu. Top!