I put it on a CF Moto 450 MT
Great durability on trips
Everything else seems normal to me
It reached 5000 kilometers, which is the interval for a change, and it doesn't seem to have broken at all

One of the worst oils I have put in the engine, in winter the oil is like water, slipping a lot, while with other oils even in summer I didn't have such an issue, gearbox knocks a lot, I would not buy it again

I bought them to put on my old CB.
(CB400SF NC31)

In general, I didn't have any problem with any oil. Being a Super Four, it works like a sewing machine anyway.
But the truth is that with this specific oil I noticed a slightly smoother gearbox. The gears require slightly, but noticeably, less force to change.
I also noticed a difference in the clutch plates. Slightly better grip during shifts.

As for the operation of the engine itself, it works now just as it did before.

Indicatively, before I was using Repsol 10/40, also synthetic.

I tried them for the first time even though I have known the company for years. I used to use MOTUL, BELRAY. From the first ride as soon as the oil circulated... I saw a different gearbox. Note, I am a SUZUKI owner, which in first gear has a knock... honestly, I couldn't believe it, both when cold and after a trip, it felt like a different bike. I don't think I'll use anything else again.

I put it in a vf 125, the gearbox softened more and the engine is quieter, I won't change it again, I used to use motul 7100, the best oil for my bike

It is an excellent oil, in the comments I think they are exaggerating a bit, all oils of similar price are just as good

Awesome oil... What Motul and nonsense... I PUT IT IN THE DUCATI MONSTER 796 AND I NOTICED A DIFFERENCE.... BUTTERY TRANSMISSION.... I HAVE TRIED ALMOST ALL OILS... I recommend it to everyone...

very good oil, I put it in yamaha crypton I change it every 3,000 kilometers, and I think even at these kilometers it does not lose its properties (I regret changing it). I have tried over 10 companies with synthetic oils, in my opinion these are the best.

In Daytona 125, I saw a big difference in how smoothly the gears engage and disengage, especially with a cold engine, which was a problem I had before it was resolved. Top oil may be expensive, but you can rest assured that the engine has maximum protection.

The oil is top-notch.. It was placed in a tracer 900. After 500km, I noticed the difference, the gearbox is completely silent and the speeds shift smoothly, plus the temperatures have also dropped compared to the previous yamalube.

It was installed on a Zontes G125. It helped a lot in the operation of the gearbox by softening the gear lever, but I still haven't completely solved the problem of the 1st - 2nd - neutral that troubles all owners of motorcycles of the brand with a 125, 155, and 200 engine. However, there is a possibility that it may also be a clutch issue.

The oil is EXCELLENT... the gears engage without difficulty, they also do not "clunk"... the engine runs smoothly... expensive but a good product

On a Kaze R where for 21 years I used Shell Advance 15w50 synthetic, the Ipone is better in the engine's purring at speeds, both are equally smooth, sometimes the Shell would stick when shifting up and needed another try, with Ipone everything is fine. In price, Shell is 12 euros, Ipone is 18 euros, so here are the dilemmas now. So will the pocket play a role or the feeling?

Update: After a very long time, I am making a new report: in the end, between Shell Advance full synthetic 15w50 and Ipone 15w50, I WILL NEVER CHANGE FROM SHELL AGAIN on the KAWASAKI KAZE R 112.

It was installed on a vf125. Previously, I had used Castrol Power 1 15-50 and before that, Motul 7100 10-40. With Motul, the engine sounded somewhat strange and the gears required force to engage/disengage (only when the engine was cold, it improved afterwards). Castrol was much better, but the gears still didn't shift smoothly. I tried this specific oil (15-50) and I was amazed. The engine runs very smoothly and the gears shift like butter. I will never change the brand/model of oil again. It may be expensive, but for my bike, it's simply perfect!

Z750 09' for those who know, it has a hard clutch and the gears "slam".
With this specific oil, I was amazed and I have to emphasize that I have tried many oils.
The gears go in smoothly and it no longer stalls!
I didn't just want to get off the bike!
It is a bit expensive compared to other oils (18€/lt) but it's worth every euro.
I would avoid Motul (7100) and Belray exp,
and I would recommend either Spectro Golden at least for this specific bike.
I highly recommend them

Ladara! It was used in a sym vf185 and the sound of the engine completely changed. Before, it was using Valvoline semi-synthetic. The speeds go smoothly.

Update: 15-50w, after 1200km, the behavior is still the same, everything is smooth. When I change them, I will update again.

Update2 (June 22-23)
Very good oils, I continue to be satisfied. It is perfect for the special gearbox of the VF185. If you want something superior, go for amsoil metric 15-50 and the price increases accordingly

Amazing!! As soon as I put it on, I noticed a difference in the smoothness of the engine's operation. As for the gearbox, I won't even talk about it, it's not just butter, it's truly melted butter. The engine produces much fewer vibrations compared to before. It doesn't cost a fortune and it's worth every euro

The ipone KATANA FULL POWER 5w40 is EX-CEL-LENT, a level above Motul's 7100!
Yes, it may be more expensive but it's worth it. I noticed a significant difference in the gearbox, it immediately softened to some extent, and you can fully perceive it at 500-1000 kilometers to a greater degree!
As for the claimed power increase of 3-4%, I don't believe you can distinguish it with the naked eye or by touch, so I don't have an opinion since I haven't done a dynamometer or stopwatch test.
For me, the ranking is now:
No1 IPONE
No2 Motul

A very good oil for engines that require synthetic, without costing a fortune. I have been using it for a year now in my Husqvarna TE410e. The engine has been idle for 2 weeks and you can see from the fill cap that the discs still have oil on them. I recommend it.