So just for your information, since I did not find much online about this topic regarding larger chainring setups with a difference of 16+ teeth:

I went with Ultegra Di2 and a 54/36T chainring combo. Shifting works really well. I cannot directly compare it to a 52/36 setup, as I had mechanical Ultegra on my old bike and I am also using off-brand components (casette, chain, chainrings).

I am happy with the setup and would recommend it to anyone considering a bigger chainring.

Note: I am using an extender on the front derailleur.

If I remember correctly. The headset supplied by LTK is a low-cost generic headset used by a number of low-priced Chinese frames, as it offers a couple of different C-Ring fitment options.

Given that this frame has an 8.7mm bore depth, you can fit your choice of FSA, Deda, Cane Creek, etc., upper bearings, as long as you use the correct 52mm (or 51.8mm) x 40mm x 8m 36/45-degree lower bearing; you should use those. It will minimize the need to replace the headset bearings in the future, and the track record for these generic headsets is really bad in terms of fit and preload retention. I personally recommend the FSA No55R LS, but I am happy to assist if I can. Some parts come with C Rings and covers, and it can be more cost-effective if you ask around first.

For example, if you are buying Deda Superbox V2 stem, it comes with a C Ring and headset cover, so all you need are the correct bearings: 52mm (or 51.8mm) x 40mm x 8m 45/45-degree upper bearing and a  52mm (or 51.8mm) x 40mm x 8m 36/45-degree lower bearing.

FSA ACR No.55R
Would this one work? It says upper: 52mm x 42mm x 7mm  45/45 and lower: 52mm x 40mm x 8mm 36/45

https://www.bike-discount.de/de/fsa-acr-no.55r-1-1/8-1.5-is52/28-6-is52/40-steuersatz-fuer-integrierte-kabelfuehrung

I have the Li-ning Feidian Challenger 5 as well and did around 200km in them. Likem too, it's my first chinese running shoe tho.
I ordered Dynafish Xiaonian and Qiaodan Feiying PB 6.0, they should arrive this or next week.

Hey,

good to see people are interested in this power meter + crankset as well. Unfortunately, I'm still waiting for my frame and the remaining parts to build my new bike, so I’ll only be able to review/test the power meter at the end of December or the beginning of January. Sorry about that.

I just checked on Google real quick — there’s some more/new information about the ArcRayo, but still no real reviews. Besides that, there are a few other new cheap power meter brands popping up right now like Thinkrider, Leoseek, Geoid, etc. Those might be good alternatives as well.

I see, good on you!

Yes sir, although I really only need another wheelset and crankset.
I'll decide last minute if I should get another Magene P515, because even though it has proprietary mounts, at some point I will have all crank lengths anyhow haha. But the ArcRayo/Zrace combo looks really sweet as well.

Yeah, sweet. I was planning first to get the Magene TEO 515. I have already a Magene powermeter on another bike. But got the good deal in the end.

I'm looking for a wheelset as well. What are you going for?

I am noticing that the price difference between buying on AliExpress and locally (in the UK) is not so much! I only just started shopping for an Ultegra 12 speed Di2 full groupset, and I do not know what prices were like earlier this year.

I can buy for 1057GBP +35GBP shipping from anrancee and risk additional customs tax. Compare this to local UK price of 1175GBP with free shipping and no added tax.

For me, the prices are really good in the Anrancee Store. I’m based in Switzerland, and the Shimano R8170 ULTEGRA Di2 Electronic Part (upgrade kit) costs 800 CHF / 992 USD including shipping (without coupons). With coupons, I can save another 98 CHF, so the total comes to around 700 CHF / 868 USD for the Shimano R8170 ULTEGRA Di2 upgrade kit.

The Shimano 105 R7170 Electronic Part Groupset (FD R7150) comes to about 520 CHF / 645 USD in total.

That’s roughly 200–400 CHF cheaper than buying it here or from Germany.
I contacted Anrancee support, and they confirmed that they can adjust the declared value on the parcel for me, so I’ll have no import tax or a very low one. Support was really helpful and made the items for me available to order from Switzerland. Beforehand I couldn't find the groupsets because shipping to Switzerland was not available and I was only able to see them over the direct link.

However, I agree with what others have said — if you have any issues with the groupset, you probably won’t be able to claim warranty, which is the major downside.

Did you guys find any good offers for the 11/11 sale? I had a look but there was not much price difference... . At least there will be the codes. Just checking because in the past I was not able to find all the offers with the search function.