Best and worst overall quality/value components/tools/gear from AliExpress?

[jonathanf2]

I'm seriously addicted to picking up UNO lightweight stems. I've swapped over to -17 degree stems on both my road bikes!

[Serge_K]

It looks a bit odd, why not use a flatter steerer top frame to stem interface thing and a stem with a more logical angle? Or the same stem if you can handle the drop.

[jonathanf2]

It looks a bit odd, why not use a flatter steerer top frame to stem interface thing and a stem with a more logical angle? Or the same stem if you can handle the drop.

I might slam it some more, but I haven't decided. I notice the -17° put me in a more snug cockpit position which I like for the downhill and also lowering my body position, but without stretching me out as much (like going with a longer stem).

[kbernstein]

Steel pedal expanders. Mine are from Risk I've seen them branded differently
Strongly recommend if you don't like having clean threads or skin on your knuckles. I thought the threads would still be fine but no, it took me an hour to remove them despite all the grease I used. Metal is very soft and bends when uninstalling, threads are toast after 1000km.
Thankfully the threads on my PM crankset are still okay. My look pedals were ruined so I'm gonna try the ultralight zeray pedals as a replacement. Hope I don't give an update from the hospital

[PLA]

can't quite make it out, can you post a higher resolution picture?

[AzureEssence]

Steel pedal expanders. Mine are from Risk I've seen them branded differently
Strongly recommend if you don't like having clean threads or skin on your knuckles. I thought the threads would still be fine but no, it took me an hour to remove them despite all the grease I used. Metal is very soft and bends when uninstalling, threads are toast after 1000km.
Thankfully the threads on my PM crankset are still okay. My look pedals were ruined so I'm gonna try the ultralight zeray pedals as a replacement. Hope I don't give an update from the hospital

Had a similarly shitty experience with ZTTO pedal extenders

They snapped on an MTB ride...luckily riight at the end of a hectic descent. Never again

[jonathanf2]

Yikes! Mental note, don’t use pedal extenders! 

[Bajker]

Good
ZTTO Dropper Lever/Remote - Pretty much as good as it gets, smooth operation.
ZRace Blade Crankset - Very high quality, the cnc machining is top notch, steel axle/shaft is heavier then aluminium versions but it wont break in comparison.
ZTTO M1 boost wheel hubs - High quality finish, light weight. The 56t ratchet seems to hold up to my probably less abusive biking compared to other people or I was lucky with getting two ratchets that align/engage perfectly (which is very important in DT style ratchets).
Cooma and Delt brake pads - Various types, works great. There's better pads out there of course but waaaaaay more expensive.

Bad
ZTTO Chainring protector/guide - I did not like it, super flimsy plastic mounting points for the protector. The chain guide is probably fine tho, haven't used it.

[veeTee1Pah]

I ordered a bunch of mountain bike parts on Aliexpress for a budget build including Shimano drivetrain parts. Most parts worked well, and almost all the shimano parts seemed genuine with a notable exception:

Losers

• A Mixed brand "dual color" CNC'd aluminum stem 45mm failed. Threads for the lower front plate bolts stripped while trying to tighten one day. Before that, the stem would slip easily on the steerer tube rotating out of place until I really torqued the bolts higher than spec. Though the stem looks cool, I suspect too much material is machined away for a reliable stem. Perhaps it wasn't heat treated correctly?
• Shimano Deore 12 speed chain was fake. Package was convincing. Fake chains seem rampant even on Amazon.
• Multi-tool that hides in the crank spindle attached with a magnet (All in multi tool copy). It's a cool idea but I lost it because the magnet wasn't powerful enough to keep it in place on rough terrain

Winners

• Genuine Shimano parts (except the fake chain) including Deore 4 piston brakes, SLX cranks and chainring, SLX cassette, Deore shifter + derailleur, bottom braket, clipless pedals
• Ztto dropper lever works as advertised
• Ztto "polished" shifter cables seemed smoother on the surface than other generic shifter cables.
• Foam tubing to quiet internal routed cables worked well. (Bicycle Frame Internal Line Housing Damper Bike Inner Line Sound Absorbing Tube 1.6M)
• CYCLAMI TPU Tubes are a lot lighter and and compact than traditional mtb tubes and don't cost much. Only used once in a friends flat, and it seemed to work.
• Mixed 5D carbon saddle has been reliable and comfortable so far
• A bunch of cycling tools ordered off alixepress worked fine for me.