o1marc said:
Not all products from China are junk. These shocks are visibly better looking in quality and the RFY are proven junk on anything heavier than a 300lb bike. The lower clevis is too wide and tends to snap off when you try to tighten it down, they are short on oil and shaft travel. Crazypj has modified them to work but says it costs as much to modify than to just purchase a better shock to begin with. I'm curious to see the OPs results from guinea pig testing these.
I'll be doing SaltCityCafe's shocks when they arrive. I'll post information as I have it.
As for the RFY's. I was able to equal the travel from my stock RD shocks with my RFY's, this required very minor reworking. There are also two spring rates. The lighter spring, a 7mm wire, is about perfect for a 300lbs. bike and a 150 lbs rider. The 8mm spring, which provides a spring rate of about 150lbs/inch is appropriate for heavier bikes and riders. The problem with two available springs is that they are too far apart in spring rate. A 120lbs/inch spring would be perfect. The 7mm spring comes in at around 90lbs/inch. I have a third spring ordered that should arrive tomorrow. I hope measure the spring rates on it Wednesday.
There exist a few final issues with RFY shock. The biggest being a total lack of information. Too many people throw these shock on expecting a great ride. Proper suspension setup is not that difficult, but too many fail to even try. That results in a poor ride and unfortunately for RFY shocks a poor reputation.
The assembly of the RFY's is crap. No doubt about it. The materials really aren't that bad though. CrazyPJ said much the same on his post. Before purchasing the RFY shocks I read his post thoroughly and then later verified through my own exploration.
If you are dumb enough to squeeze a clevis together then you deserve the failure that is coming. Steel maybe, aluminum no.
In the end, when you spend $200 at hagon you are paying for their knowledge. They give you a spring rate that matches the weight of your bike and a shock that is set to damp correctly for that rate. The shock itself is outdated technology. The result of this is a good riding bike, but the shock is still a throwaway piece with no options for damping change. The shock and spring package are dumbed down to the point that you can't screw them up. That's why you pay $200 for outdated shocks.
So this brings me to why I have decided to invest time in RFY Shocks. Having taken the RFY apart it is obvious that the ingredients are there. I don't feel it is too far fetched to develop a strategy by which the RFY shock can become as good if not better than the base Hagon. The RFY is in fact a much better design, all that is left is to properly understand the spring rate and damping properties. I have already made major inroads on this process and fortunately I have received some interest in my rebuild program. As this program continues to grow the shocks will only continue to improve. The base build on my website is $75 and that corrects everything except the preload issue. Given you can get the shocks for $80 and spend $75 on the rebuild that gets you a 155 dollar set of shocks that work rather well. Lot's of other guys have rebuilt their shocks and had good experiences.
I'll post further information as I have it.
Well like most facts in this thread we don't actually know but we can speculate that they are probably manufactured in China - and that isn't necessarily bad. iPhones are made there after all and they seem to work OK. 
