Call us Prior to ordering this system as you must ship your shocks to us.
By far one of the best selling UTV’s on the market, the RZR XP4 1000 combines a great suspension design with over 100 horsepower to create an excellent performing package. All of the XPs come with Walker Evans shocks including a 2.5″ diameter rear, needle valve shocks that perform very well out of the box. But, Polaris places criteria on Walker Evans which tie their hands a bit when it comes to ride potential. They must set the RZR up for the worst case scenario ( from a ride perspective ) such as four 300 lb guys and a roof rack full of gear. Because of this the XP is set up way on the stiff side. All of the chop, rocks and wash board roads transfer straight through the chassis into the drivers seat and rattling your teeth. In addition to that if you drive in the dunes and turn the compression up for the big G outs, the small chatter gets much worse.
Our Stage 1 Ride Improvement System (RIS) cures all of this and more. It is extensive, internal shock modifications aimed at smoothing out the ride and making the XP more stable as well. By modifying the piston to improve and manage oil flow as well as change the valving and increase oil flow through the compression adjustor and machining the shock shaft, we can virtually eliminate all of the small chop and vibration transfer into your seat as well as increase the bump stage which stops the RZR from bottoming out in the G outs. Also, our valving changes cure most of the rear bucking that is prevalent in the factory XP4 1000.
With the stock set up a one hour drive through rough terrain may leave you feeling beat up and worn out. After the Stage 1 RIS you can run all day without that feeling. This also helps lessen the front end nose dive under braking. Less nose dive means more stability in the corners.
Your wife and passengers will thank you. Your friends will be jealous of your plush ride as well as the fact that they are slower than you through rough terrain. Our customers report 100% ride quality improvements with our Stage 1 RIS. Don’t wait, unlock the smooth ride potential in your RZR and become the fastest guy in your UTV group!
Stage 2 RIS adds our bigger anti sway bar to the rear of the RZR XP4 1000 on top of the stage 1 mods. This eliminates the top heavy, body roll in the 1000. Our sway bar is heat treated and adjustable from 50%, 60% and 70% stiffer than the stock anti sway bar. This allows you to tune how much of a Corvette you want your RZR to feel like in the corners according to the terrain or track conditions. Combining the stage 1 RIS shock work with the stage 2 anti sway bar is a GIANT leap forward in performance and driving comfort and safety for your RZR XP4 1000
Stage 3 RIS adds our Dual Rate Spring kit to the stage 1 shock work and the stage 2 anti sway bar. The DRS uses our proprietary racing springs (all made in the USA!) and our Silent cross over rings to give you a much smoother and plush ride for the first few inches of wheel travel while simultaneously giving you thousands of pounds more spring force at full compression to prevent bottoming out in the biggest of hits. Also, our Silent cross over rings eliminate the clicking that comes with the standard cross over ring system. The best ride of all through all types of terrain.
NEW! Stage 4 RIS adds our FRONT, adjustable sway bar system to the Stage 3 kit. Our new bolt on front sway bar system really ramps up the stability of your RZR in the corners and high speed runs. The body roll that the rear sway bar eliminated is complimented by the front sway bar in such a way as to allow you to run the rear bar a little looser and the front bar on any setting you may like to create a balanced car in the corner. Four wheel drifts are possible where you would never have attempted them before. The front sway bar is useful in all situations but becomes a must have as traction goes up. The dunes, tacky dirt, race tracks and asphalt all require more front sway bar to keep the RZR balanced in the corner and our adjustable front and rear sway bars allow you to tune your car perfectly for your driving style and terrain. Rail corners at speeds no one can match with our tunable front and rear sway bar systems. Smooth and plush ride with huge bottom out resistance with our shock work and dual rate springs. Corvette cornering with our sway bar systems. The best of all possible handling scenarios!
Stage 1 RIS: custom piston and shaft machine work, new valving, compression adjuster flow improvement…………$649.95
Stage 2 RIS: adds a new rear ANTI SWAY BAR. Stage 1 plus stage 2………….$1199.90
Stage 3 RIS: adds our DRS kit to stage 1 and stage 2. total……………$1,999.30
Stage 4 RIS: adds our adjustable, FRONT anti sway bar to the Stage 3 RIS, Total…….$2,649.25
Posted by Jay Taylor on Mar 7th 2016
Did the level 4 spring kit front and rear sway bar's took the shocks and dropped them off for the revalving . It's like a whole different machine . I would recommend it the handling is a night and day difference . I should've done this upgrade first .
All prices are in USD