JFOYHUltralight 11 Speed Cassette for Road Bike 11-28T/11-32T/11-34T/11-36T Compatible with Shimano and Sram Standard HG Hub Driver, Original Gift Box Packing

Looks great and is very light. Shifting is very smooth and seem less.

Used this with a SRAM AXS Red 11speed 1x set up. A little loud but crisp shifting and spacing is accurate. This is my second one (had a 11/32 before in rainbow) probably got about 4-5k miles out of it the year prior and then the 22t started to slip. For the value you can’t beat these. Highly reco

Updated (second update), after some mileage and buying a third one (jump down).I was in the market for a new 11-34 cassette and due to supply chain issues, my options were rather limited. The JFOYH ("Just FOllow Your Heart") ultralight cassette seemed like an interesting option over the Shimano CS-HG800-11 (Ultegra) cassette in the same size. One difference, the jumps in the cassette are not the same as the Shimano cassette (11-13-15-17-19-21-23-25-27-30-34T for Shimano vs 11-13-15-17-19-21-23-25-28-31-34T).The larger difference is that exactly half of the JFOYH cassette is aluminum while most cassettes in this size are all steel. This will certainly have some ramifications regarding durability. That said, after a few rides it seems to shift smoothly when paired with an RD-RX800-GS (Ultegra Rear Derailleur with clutch) and a YBN chain.All that aluminum results in the cassette coming in at 229 grams which is lighter than the 11-28 Ultegra cassette it is replacing at 244 grams. Ostensibly, the comparable Shimano cassette weighs 335 grams which is a significant weight difference.The aluminum gears are all one piece, while the rest of the cassette (save for the 11 tooth) are connected to a central spindle. Sort of akin to an Eagle cassette only with more aluminum gears (granted XD and XDR cassettes are completely attached).And now I have put over 1k miles on the cassette and have some further thoughts.First off, it has worked flawlessly, in terms of shifting, et cetera. At this point, I've had it on for over 1k miles (I ride about 230 miles a week on it) about half of which was on gravel and 100 miles of that was for the Trinidad Rad Dirt gravel race in Trinidad, Colorado. Most of the exposure/dirt has come from "moondust" like fine dust that you find in the Front Range of the Rockies. However, that race was extremely muddy for the first third. So muddy that the YBN SLA chain I put on at the same time as the cassette, showed about 0.6% stretch (using a Park Tool CC-2) afterwards.Which is all to say: it's been through the wringer a bit.It shows no signs of wearing (shark-toothing, chipping). 1k miles isn't a lifetime, but I'm rather bullish on that aspect. I'm also rather particular about having a clean drive train. You can see some wax on the cassette in the updated photos. I'm a Molten Speed Wax user (in lieu of regular lube, you completely degrease your chain, I use an ultrasonic cleaner, and melt the wax, let the chain sit in it, etc... it's the cleanest and most efficient lube, but that's another story) and only resort to using Banana Slip (a tungsten based wax) in extremely muddy conditions (and it doesn't interfere with the Molten). If you're less particular about your drivetrain, you might see more wear on the aluminum cogs.It also looks rather stunning, with the open back of the aluminum.This is where the praise ends.If you buy this cassette you will absolutely need to buy a Shimano lockring (more on that in a moment). The included lockring isn't big enough for either my Park Tool FR-5.2 Shimano Cassette Tool or Wolf Tooth pack wrench with steel HG insert. I thought maybe if I tapped it in a little with a soft faced mallet, it would open up, but that did nothing but damage the soft aluminum of the lockring.As soon as you get it, toss it in the recycling bin (I think they can recycle anodized aluminum).I then made the mistake of buying a third party lockring, which while it fit the tool, didn't have properly chased threads... (another review). I ended up just repurposing the Ultegra lockring off my older cassette. Works fine, no issues. To avoid my mistake, you can buy a Shimano HG lockring (doesn't really matter if it's Ultegra, Dura-Ace, whatnot).The shipping times can be a bit slow, but if you're looking for a lightweight cassette that appears to be made well, it's worth the investment other than the terrible lockring.Further update: I've put even more miles on it, still working fairly well. I ordered a second one for use on my smart trainer... the lockring on the second one fits a tool, but seems to either be threaded wrong or has too much anodization on it as it feels like it will strip the freehub assembly as I try to thread it on.Still pretty happy with it, just be sure to keep the chain clean and fresh.And the latest: in the supply chain constrained world of 2022, I was trying to build up another bike with eTap AXS and, of course, the 10-36 cassette (in any variety) from SRAM was unavailable, unless you're willing to pay double MSRP on eBay (of course).To that end, since i still had the OG HG (Hyperglide) freehub body (in addition to an XDR for the upgrade), I ordered one of these in 12-speed, 11-34 as a make shift solution.Because this data is so hard to find online, I can say this: the JFOYH 12-speed 11-34 HG works fine with eTap AXS and the flat-top chain. I never had an issue. And the 12-speed cassette came with a lockring that worked flawlessly (so they must have improved the process there).I will say that while it works, the JFOYH cassette, with it's simpler design (no shift ramps, etc) is not as smooth as the Rival 10-36 I found a few weeks later (after much scrounging), but it will absolutely work.

Clever design and works well. Very reasonably priced for such a light weight component.

Yes, it is light, but the benefit ends there. Two smallest aluminum gears began slipping with chain which became dangerous when accelerating across intersections, etc. Also aluminum spider/gear combo began to click and creak under pressure. Hard to trust with the quick degradation of performance. Double your budget and get a Dura Ace set, or spend the same and get Ultegra...you will not regret the alternatives.

Replaced the heavy OEM 11 x 42 cassette with this lightweight 11 x 32 cassette and my bike climbs just as well if not better as it did with the 11 x 42 and accelerates much better the gear ratios are much better spaced. Shifts fantastic. Brand new, just one ride, but so far so good. I'd say buy it, try it , you'll like it!

Excellent. Durable and about the same weight as $250 Shimano.

The back of this cassette is beautiful to look at, just really nice looking machining. The tooth profiles were and ramps were similar to slightly older designs which work well and paired with a KMC chain it rides quietly. Initially I had some trouble with shifting, it would shift fine till the 8th gear (12sp version) then there would a hard delay in shifting before making the jump to 7, and then slow shifting. Going back down the gears it would hang up in the same spot. Tossed in a 12sp chorus cassette and the problem went away leaving this cassette as the problem. Turned out the cogs were slightly too thick, not by a lot but with 12sp any little bit is a problem. So I took out the spacer in between and shaved off .15mm with a sanding block, tightened down the cassette better with the screws that hold most of the high gears on, and sure enough it shifted just fine. Not perfect but really close to it, shifting is smooth across all the gears, and for the price with the amount of machining involved, its a great value. I will buy another when it is needed.