Shock Therapy

Shock Therapy Dual Rate Spring Kit (DRS) 2017-2019 Polaris XP 1000 4 Seat

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  • Regular price $99.90

Level 1 kit includes:
2 "Silent" crossover rings (front only)

Level 2 kit includes:
4 "Silent" crossover rings (front and rear)
2 upper rear coil springs

Level 3 Plus kit includes:
4 "Silent" crossover rings (front and rear)
4 upper coil springs (front and rear)
2 lower coil springs (front only)

Level 4 kit includes:
4 "Silent" crossover rings (front and rear)
4 upper coil springs (front and rear)
4 lower coil springs (front and rear)


There are many ways to help your RZR X4 P1000′s ride through spring changes. But, you many not have to install a full tilt Dual spring system to get the improvement you like. So, we have set up some simple spring kits that if done in order, will allow you to make improvements in the most meaningful way as well as build up to a full Dual spring kit if you like.



The level 1 spring kit is actually not springs at all but actually 2 Silent cross over rings for the front shocks. These cross over rings will allow you to engage the stiffer, lower spring earlier in travel so that you can minimize nose dive under braking, front end bottoming out and keep the nose higher when jumping or in the whoops which helps the rear bucking too. 



Our Level 2 spring kit includes the level 1 cross over rings as well as 2 “Silent” cross over rings for the rear and two race springs. Our full length upper springs replace the factory, coil bound springs and give you the room to run our “silent” cross over rings creating a Dual Rate spring system in the rear.   Now you can run on the softer, combined spring rate for a longer time through the compression stroke before the stiffer lower spring comes in. This is a much more soft and plush ride but it also lets you control when the heavier lower spring comes in to help with the bigger hits and bottoming out. It also settles the back down further limiting the rear kicking in the whoops and letting the RZR fly more level when jumping. 

LEVEL 3 plus


 We skip past a level 3 spring kit because the factory front shocks use a long lower spring that keeps us from running the proper upper spring needed for dual rate function. We can't offer just a new upper spring. Our Level 3 plus spring kit includes Level 1 and 2 parts as well as two front upper and correct length lower race springs. Just like Stage 2 which give you a dual rate system in the rear, the Level 3 plus adds a dual rate system in front with a longer, upper springs and new lower springs too.  This system gives you the room to adjust the front “silent” cross over ring and control the heavier lower spring while, at the same time make the ride even more smooth and plush than the stock spring ever could. This kit is light years ahead of a single spring in performance.  With the correct spring rates front and rear as well as silent cross over rings to engage the lower springs, the level 3 plus spring kit is a massive step up in performance from the stock system.



Finally our Level 4 spring kit. The ultimate in suspension improvement through springs.  It includes everything in the previous 3 kits plus 2 more race springs to replace the factory lower rear springs. This completes the full Dual Rate spring kit. The LOWER springs we supply are a heavier rate than the factory springs which helps you even more by eliminating bottoming, body roll, front dive and rear squat. They allow you to run the cross over rings higher on the shock which lets you feel the softer combined spring rate longer for a more plush ride. Since the lower springs only come into play in the biggest hits you can run harder and faster than you ever could have before without bottoming out.  This is the ultimate in smooth ride while still sacrificing nothing in the big hits.

All of our proprietary springs are made in the USA from the highest quality CrSi materials. This means they are always the exact rate we want and don’t fade or break. They cost more when made from this material but are absolutely worth it when it comes to function and longevity. They are also warrantied for life!