I have some bePro pedals (predecessor of Assioma) that I bought in early 2017… they’ve had new bearings but still on original spindles and still work.
I also have Assiomas that I bought in Jan 2022, which are fine.
My first one lasted 4 years, just replaced this year because of an issue with the pod. And this was used in the SPD hack on my MTB and on the trainer, so I wouldn’t say it was babied or anything like that.
What sort of issues have people seen to indicate you need to replace the spindles or pedal bodies. I’ve had my Assiomas since 2017 with no real issues as far as I know. They’ve been awesome. I have had to oil the springs and loosen the tension and retighten it sometimes to seemingly reset it (when I start to feel some play), but other than that they seem good. Just curious if I’m missing something.
This is why I replaced my pedal bodies 
But to be honest after 5 years of fairly heavy use I think they were due to to replaced. Pedal body replacement includes bearings.
Also, the pedals bodies do actually wear over time with lots on clipping in and out. You can notice this as there will be some side to side movement in your shoes when clipped in.
Silly power readings. Especially in the wet.
For me it was drifting power readings. I’d calibrate them but then one of the pedals would start underreporting power so my L/R balance would start at 50/50 then go to something like 70/30 over the course of a ride.
That’s the main reason why I’d always recommend going for the DUO over the UNO - they are independent readings so if one goes wacky then you have the other to compare against.
For me the assioma spd pedals feel extremely loose even when fully tightened. I’ve never seen this mentioned in any reviews which seems odd. I had a friend try mine with his shoes and he said the same thing. It bad enough that I don’t want to use them. I bought the newest version of them in August 2024.
Are you using the cleats that Assioma gave you? They use Xpedo cleats which are NOT the same as SPD. They are similar, but there are differences in how they interface to the pedal.
Also, there’s cleats with more or less float - how much they can freely rotate/slide horizontally.
Lastly, cleats can wear out, especially the plastic ones do if you drag your foot at all.
So buy the Xpeedo cleats with least float (for a secure feeling) or most float (to make it harder to accidentally clip out). See if that resolves your issue.
I’ve actually found the MX assiomas to be more more difficult to clip into compared to my look x-trac that they replaced. I really have to be intentional with pushing down on the pedal. Everything else feels great though.
Yeah I’m using spd sh51, replaced them to rule out wear. I’ll have to try xpedo, thanks.
Been using them for years, single and dual sided. Bullet proof operation. Regarding power, they are very consistent. Use them on my road bike but have switched to my gravel bike for less technical races. All good.
Did you ever figure this out? Mine Duo Shi have gone from ~51%L/49%R to ~45%L/55%R. They always used to line up really well with my Kickr core and now they’re like 11% lower. If I scale the left pedal to get back to 51% that puts me back in line with the Kickr but I feel weird doing that (how do I know any outside efforts are right going forward??)
I’m thinking about getting a Magene for my road bike and keeping these Assiomas on my gravel bike which I don’t ride as often. 
Cool thanks for the update!
Favero could tell remotely that my left spindle went bad and offered to replace it even though I was ~6 months out of warranty. They’re helpful but response times are crazy slow (like 4-7 days between emails). I first emailed them Sep 3rd and with any luck they’ll be shipping the spindle soon. 
How long have you had them? I recently developed a clicking sound at the bottom of the pedal stroke with my pair. Tried swapping pedal bodies and it continued… I think I maybe in the exact same situation.
I bought them in March 2023.
curious, do you you the look cleats in the assiomas? if so, do they work alright (I like the extra float of look cleats)
FWIW: I use Look red cleats with my Assiomas and they work fine for me. Grey work well too.
I only use the red look cleats and their fine.
I was referring to the MTB pedals since he mentioned x-track. As far as the road pedals go, they work fine, but aren’t as solid as a fit as using look cleats with look pedals…not a big deal, but it is something
Ah OK. I used the cleats from the x-track. Eventually they either got easier to clip in to or I just got used to it because it doesn’t bother me at all now 