Just installed my level 4 dual rate… Just installed my level 4 dual rate springs last night on my 2017 Polaris RZR XP 1000. Will try them out on trails this weekend. Online order experience was good, with prompt shipment. Quality looks good, everything fit correctly and online instructions made install easy.

Tender springs The tender springs were easy to install, work great, only complaint is that they are noisy when the crossiver ring rubs the tender spring and the spring divider rubs the shock body causing wear on the shock body, I have tried repositioning and indexing the springs to no avail. I emailed Shock Therapy about this but got no reply.

They have very excellent quality… They have very excellent quality products, some of the best. I didn't rate 5 stars because I believe that got too big too quick. I have had mixed results with customer sales reps, and sent non-fitting items that were rushed out before a diligent R&D was performed. However, the customer service dude then went above and beyond to rectify the situation. But for my level 3 spring kit, I got a one size fits all treatment and felt a bit dumbed down by the rep even though I know my way around a shim stack. ( and the primary rears are the wrong rate for my application). I don't think a set of Walkers rebuilt and sprung by them couldn't last more than 4000 miles until they disintegrate into High Desert yard art. I would buy there stuff again though, and again. Top notch machining, killer tolerances, and USA made. Their Tech guys/gals know their stuff. I see why so many companies imitate ST products.

I have problems with my spring rubbing… I have problems with my spring rubbing in the actual shock. The guy that installed it for me heard that the spring maybe needs to be turned. I don’t understand why this would be the case. Also the bolt broke that holds the sway arm I purchased. I called to order new ones and was told they are stock. The dealer didn’t have them in stock.

X3 Toe Link Support Shipping was fast and product received is as described. Installation is straight forward if you watch the installation videos on YouTube. Product looks well made and should do what it is designed to do. I give it 4 stars only because it is difficult to drill the hole precisely with the step drill that comes in the kit. The step drill does not naturally follow the hole like a standard drill bit would. Due to the angle of the hub when mounted in a shop vise it is hard to hand drill the hole perfectly square with the existing hole. Ideally, a large drill press or vertical mill with an adjustable table would be the best way to do a perfect job.