C5 Aero Di2

Service was excellent, very responsive to all my questions.
The bike is super light, a bit too aggressive of a position but amazing value for the price, couldn’t be happier.
Highly recommend to anyone considering this bike.
5/5

I like everything about this bike and highly recommend it to my friends and everybody who hesitates!
- The quality of the frame is high, and the paint is perfect.
- It looks super good to my taste, exactly what I wanted! (In real life, it's even better than in pictures!)
- The price for the bike I got is super good. I researched the market for more than a month, and some bikes were cheap, but the quality was questionable, while other bikes from Western brands had crazy prices for similar specs. So, when I saw that Winspace started to sell complete bikes, based on the pictures of the bike I liked, its price, and good reviews from other riders, I decided that it's exactly what I needed!
- The ride feels nice! Some people have complained that the bike is too aggressive for an endurance bike, but this is exactly what I needed: I like to ride fast and often do it in an aggressive position, and I often ride for long distances over 200 km. Before I ordered it, I measured the parameters of my old bike and compared the geometry with C5 aero to understand which stem length and frame size I should order. In my case, I am 183cm, and the size L and 135mm stem work well, but 125 would be good too.

The UNAAS Pro2 wheels and DI2 shifters are like a cherry on a cake. Before this bike, I had Kona King Zing with Dura-Ace, an old high-end full-carbon road bike, and on a new bike, my average speed increased, especially when riding with headwind. An interesting test: on the old bike, my max speed was 77 km/h when riding downhill from a local mountain without pedaling. On the new bike, my max speed was 89 :)
- Finally, the Winspace team was very nice and kind to me. I had so many questions, and they always patiently answered all of them. I also had some special requests about delivery, and they kindly agreed to help me with that. Also, we had minor problems with UPS delivery, but the Winspace support team helped to handle it, so I am really grateful to all the people who helped me out. Thank you, Winspace, and special thanks to Mandy and Edward!

- The only thing that was below my expectations was the weight. The advertised weight is 7.6 kg for size M, and the actual weight was 8 kg without pedals for size L with the 135mm stem, despite ordering lighter wheels with carbon spokes. But 8 kg is a good weight too, especially for the price.

Very good bike. Its a bit small but other than that its a perfect bike.

This bike arrived about 2 weeks after I ordered it. The first thing I noticed was how light the box was. Workmanship and paint job are excellent, The seat is really good. My problem is that for an endurance bike, the geometry is basically racing. The recommendation for size are too small. Having said that, the reach is really long and the handle bars really low relative to the saddle. For a comfortable fit I'd need about 60 mm less reach and 40mm m height. I took the bike for a ride, and it's a sweet comfortable ride, reasonably snappy and I can feel the good aero.
So if you're big with short legs and a long reach, I think you'll really like this bike. It's sure pretty.