i made my own spacers using the sky design in mind.....i used a solid chunk of roundstock stainless which i then turned in a lathe and then cut threads on the inside and outside of them so that they screw into the top of the strut, and bolt thr the strut mount... which i didnt flip...i know of a guy on here that has had some unfortunate luck with the boondox brand spacers, but he recently JUMPED his zuke offroading near his house, and the next weekend we were out at a mudbog, and he hit a hole pretty hard and the spacer actually split, letting everything unwind from there.....his was a newer model....00 i think...they have a 1 piece ball join assy which i guess according to him is pricey, but boondox has never heard of this they told him...and they shipped him a new set and no charge.....really good for the customer service point of view.....but thru my abUSE, ive never had any issues with mine....