Hi Nick
I have a DR650 that I bought off Team Moto. They have fitted heavy springs (9.6kg, rear shock) but I suspect that they have not revealed it as the bike is like a pogo-stick. The spring rate is well above recommendation for my weight but I want to stick with it because it is good for two up riding. I will revalve fork and shock obviously but am wondering what your recommendations are. I have spoken to Shock Treatment and they have a shaft assembly that can be fitted that then offers rebound adjustment, and that sounds very appealing to me. PS- no the shock has not blown out the bike only had 1000km on it when I got it and there are no signs of leakage.