After taking a chance on a bolany boost 100mm fork for an xc build (no jumps or drops) as it's weight is quite impressive (1800g or so), for just under 130euro. Most likely pure shit but it's worth a shot on a bike that will only be used for longer less demanding rides.
First thing I'll do though is dismantle it and grease the inners (I'd assume no point putting oil in the lowers as it won't hold

Any feedback?

I just ordered 2 of these rims: https://www.aliexpress.com/item/1005001357708166.html?spm=a2g0o.order_list.0.0.690b1802etqdQB

Ordered them both separately so I got the 15 USD discount twice. 103USD/EUR per rim...

Did my first offroad MTB-tour yesterday. 40km offroad and afterwards 30km road to get home. Still no complaints about the new brakes...

So, I did my first ride with the new Onirii BR-05 brakes. 100km on asphalt... The front one is still with the standard housing and pads. For the rear one I used the compressionless housing and metal pads. They are a HUGE improvement over the old BR-02 brakes. In the past I was never able to lock up the rear wheel not even on gravel. With the new brakes, I have to modulate braking to NOT lock up the rear wheel.

The front brake is not as strong, so I guess this will be because of the pads and/or housing. But they still work nicely.

My Sunshine 11-34 cassette did the same, but it wasn't 3 rivets that got loose but 3 hex bolts that I noticed were all loose after ~1000km. I torqued them pretty tight and now it's much better. If it's rivets going loose I'm not sure there's anything you can do about it sadly

No, nothing you can do. One got so loose, I could just take it out... I stopped using the cassette, but a lifetime of only 2000-3000 km is not what I was expecting. It's not only the cost of the cassette, but also the 3 chains I have in rotation... So in the end you get 1x45€ + 3x 20 € = 105 € wasted 

The new cassette is still quiet. I guess it is because I put a lot of oil on it where parts can possibly rub...
But since I wax my chain with paraffin I would rather not use oil on my drive train...

In summary: Do not buy it...

I got the first one when I built up my gravelbike about a year ago. After 1000 km chain and cassette were worn so bad I had to replace both...

I then got 2 new cassettes (the same ZTTO ones) for both my wheel sets, thinking it was my fault for not checking the chain sooner... I also started with 3 new chains that I wax and rotate every couple 100 km. I only used one cassette that I switched between wheelsets.

So after about 2000km the cassette is not worn yet, but is starting to make a lot of noise. Really loud creaking. Took me a lot of time before I found out it was the cassette. After reading the reviews on Ali I do not seem to be the only one... (but most of the reviews are very positive because when the cassette starts creaking you can't leave a review anymore). The problem are the rivets that hold the cassette together come loose and there is play in the cassette and this starts to make a lot of noise.

I had the other new ZTTO cassette laying around so I put that one on with a new chain, hoping I would be released from the noise for at least some time... But the first ride this cassette also started to make a really loud noise every pedal stroke. It really drove me crazy. I have since ordered a SRAM 10-42 cassette, but in the meantime I applied a lot of oil to the cassette and the previous 2 rides it has been silent. But it will only be a matter of time...

When this cassette starts to make noise I will bin all the ZTTO cassettes, mount the SRAM cassette and never look back...

Financial analysis: 3 ZTTO cassettes at 45€ each vs SRAM cassette at 85€ is not really a lot of savings... 

After about a year with the ZTTO brakes, I must say they are really bad. I have changed the pads to metal a long time ago and that did give some improvement, but nowadays the brakes are simply dangerous. Yesterday there were 2 times during a ride I was afraid I would miss a corner because the brakes were so bad...

I am fed up with the ZTTO brakes and have now ordered the Onirii BR-05 brakes. These should be an improvement over the old BR-02 brakes. Will keep you updated when they get here...