This thing is solid. Of all the things on the bike this is definitely not the weak link. It definitely holds up to the 310lb capacity. Easy to install, looks great and a great size for almost anything.

Why did you pick this product vs others?:
I wanted to upgrade from my standard rack which only carried 55lbs and this upgrade said it can handle up to 300lbs. To be honest, I’ve carried up to 100lbs on this system and it still holds up very well!
Works well:
As stated above, with 100lbs on the carrier, it works very well. I recommend that you look at how you want to carry your stuff but also, add to this if all possible with a box carrier on top of the rack to offer more capabilities and it saves from carrying pannier but I like mine cause I carry my tools and water in them.
Value for money:
Excellent price and holds up very well!
Hardware included:
All the tools were included but there’s no clear instructions on what goes where.
Ease of installation:
This part was honestly the hardest part. After installing the main piece, the rest became a guessing game. Once you figure it out, it’s not too hard but I recommend watching the video on here or on YouTube to understand what to do.

I keep breaking welds on my bike racks that can't stand up to the rattling of third world roads. They last less than a year.
This is a completely different approach that uses lots of beefy, i.e heavy, hardware to bolt the pieces of the rack together in place of welding them. The result is a significantly larger capacity, at a cost of significant weight. Weighs 2 lbs more than the 1.5lb racks that keep breaking, nearly all of it being bolts and screws. Installation takes longer too as you are bolting together pieces that usually come welded together.
The rack clamps on to your seat stays, and they include rubber gaskets to keep from scratching the bike. It was easy to avoid interfering with the exposed, bare rear shift cable.
The hardware is first quality including locking bolts, design is well thought out, and they include all the tools you'll need and clear instructions. If it fails, I'll be back, if there's no update, you can assume it's still going.
Update: 9 months later, it's still going strong. I didn't appreciate how much higher up this thing sits compared to other racks, about 6 inches higher. That means all the panniers that normally hit your heels when you pedal are out of the way with this thing. One thing of note: I kept checking and retightening all the bolts each month and lots of them needed tightening for the first two months as things settled into position. By month three everything remained tight.
Update 18 months later – still going strong. Was told it was going to destroy my bike but I've had no issues with it.

Direct fit perfectly , although the directions were not that good , it was very easy to figure it out logically after looking at the photo

Good design, multiple functionality, bike rack, bike back seat, rack size, value for money. Alot of assembly required!!! For some (like myself) light fabrication is required. Solid support materials used tho. Pretty sure my bike frame is gunna be stronger when I get done tapping & bolting this bike rack frame directly to the bike frame & then adding quick steel/ JB Weld lol. My frame is too big for the original fittings to work.

Rack is very versatile. The thing can hold a lot of weight. It's very over built. The hardware is great. You do need the seat post 3 inches above rear tire.

Broke after two uses. Very cheap. Hardware does not hold