BOLANY 10-Speed Bike Cassette - Compatible with Mountain & Road Bicycles - Durable Bicycle Gear for Smooth Shifting - Perfect for Commuting, Trail Riding & Road Cycling

Provides a nice range of gears. The 42T comes with a derailleur hanger extender. Definitely needed it. No noticeable weight increase. Bike shifts even better now.Ramps for shifting did not lead to the best performance. I could accept that and deal with it for the low cost. The third lowest gear was not supported well enough for a 200 lb Rider to put full climbing force on it with a 30t chainring. It shifted a bit and led to a lot of noise since the spacing is not right. Better cassettes donot leave the third year unsupported and should not suffer the same fate.This cassette (10 speed, 11-40t) is probably heavier than some of the higher end cassettes, but as far as quality I can't see anything wrong with it.It is machined well, it fit perfectly on the freehub body when installing.I only have one ride on it so far, but it shifted smooth. Time will tell as far as wear.One reviewer said that one of the three small screws that hold it together backed out. So before installing it I did remove them one at a time and put them back with thread locking compound. When removing them I noticed they were not very tight, so I installed them back a little tighter. In doing this the ends of the screws protruded through the outer cog a little. I simply filed them down flush. Honestly, they could probably be removed entirely, you would just have to deal with the loose stack of cogs and spacers when installing them. I didn't use the derailleur extension that came with it, because I don't like the design. It's off-set with a more extreme B screw stop position, not longer like a Wolf Tooth Goatlink. Although not optimal you can get by without an extension up 42T on a Shimano 1x10 speed system, so that's what I'm doing on two different bikes. I probably will be purchasing GoatLinks in the future though just to save wear on the components. (Note: Shimano 11 speed requires no extension at all on most derailleurs.)I use a 8 speed Bolany cassette on my touring bike and it works great. It got a 5 star. The reason why this purchase only got 3 stars is because the lock ring didn't fit so I just used the old lock ring. Probably it was just a bad part that got away quality control. Secondly, the 3 screws that hold the cassette rings are very loose. I just removed the screws, put some loctite on the threads and screwed it down tight enough. I read a review from a previous customer about this issue that's why I checked and true enough, the screws were loose. Some might oversee this so hopefully buyers will read our review so they will know what to do. The cassette works fine now. It shifts well and is very quiet while pedaling and shifting.Se lo recomiendoReplaced a worn out Shimano cassette with this one. First impression is, it fits perfectly, shifts cleanly without skips. I'll find out soon about longevity as I'm using this on an ebike with 250W pedal assist. These things eat chains and sprockets. I'll post an update when it fails.I bought this cassette (11-32T) to replace the SRAM PG 1030 11-28T cassette installed on my brand new Vision Trimax 30 rear wheel. The Bolany has all sprockets bolted together accept the 2 smallest sprockets which I have never used. The SRAM only has 3 largest sprockets banded together and the midrange single sprockets which I use the most are destroying the soft hub body. The Bolany is just a tad heavier but it costs much less and shifts as good compared to the SRAM. I am buying the second one for spare and still have some money left for retirement saving.Entirely adequate considering it's price.Doesn't offer high performance shifting, but at appx $35 you don't expect it to. It fits well, accurately made, and is actually more quiet then my old one. Slightly rough shifting in the middle of the cassette, but I can't rule out my deraileur as the source, so YMMV. I do recommend this for repairs on a budget.Excelente calidad precio lo recomiendo ?Excelente en calidad y precio, y muy fácil de instalar