I want to thank all those on this thread for motivating me to stow my 1775g Giant P-SL1 wheelset for a set of FSC50-CM's @ ~1400g. Your time and research (and a bunch of my own) gave me confidence to pull the $600+ trigger. Only took 10 days to get them, no extra Paypal charge via farsports.cn | wheelsfar.com.
At only 200+mi on this set so far I couldn't be happier. All I really wanted was lighter weight, and a bit of aero, which I got and more.
They just feel more stiff and responsive and with being ~155lbs I probably couldn't twist them if I tried, not even on my fav all out climbs. I'm just back from a 45mi hill romp this weekend and loved it.
The Bitex hubs are smooth, and these wheels spin up noticeably faster. I'm using red Velo plugs, the included blue Farsports pads and skewers. Braking is different, but not scary, the pads have worn quickly and I'm going to try Swiss Stop yellows next. No pulse, no fade, just a light scream from the pads on my last heavy descent (42mph to stop).
My rear Conti GP 4000s went on with a bit of grit and tire lever, not too difficult. The front P-SL1 went on by hand (almost worn, replacing after the new year). 38mm extenders on 40mm tubes is a bit much (wrapped in electrical tape to quiet the chatter). Pretty confident 60mm tube stems would be sufficient.
This is a great first set of carbon wheels for the un-initiated; Inexpensive, light, stiff, good performer so far and a nice steathly look with the UD Matte.
Super happy broken bodied ex-halfpipe/park rider addicted to speed and suffering.