RT Pro introduces an amazing blend of ride quality and performance for the RZR 4 900. Our Dynamic Inertia Spring System (D.I.S.S.) has been proven for years in other replacement spring kits we sell and seems to get better and better for each model that comes out.
This kit is a complete set of dual rate spring for the front and rear which are 2.5" I.D.. This make this kit universal to all aftermarket 2.0" or equivalent shocks so if you ever decide to upgrade to aftermarket shocks you don't have to buy shocks with springs. You can take your RT Pro springs with you!
This kit includes adapter rings which convert the OEM upper and lower spring retainers from a 2.25" ID set up to the 2.5" springs that come in this kit. The kit also includes RT Pro's molded Delrin spring spacers. These are designed to slide up and down the body of the shock straight and true for a long time due to their precision design and high quality American material. They will also last much longer than our competitors because they have better wear characteristics and built in UV protection.
We found there really only needed to be two rate kits needed for the 4 seat model. The Standard rate kit works great for 2-4 people without a ton of extra gear loaded beyond what the average owner takes with them for a day on the trail or dunes. The Heavy Duty kit is recommended when carrying 4 full size people and lots of gear/accessories.
This kit fits all year RZR 4 900
Kit includes (8) springs, (8) adapter rings and (4) spring spacers. All springs come with silver powdercoat.
This kit is 100% MADE IN THE U.S.A.
RACE RETAINER UPGRADE
While it's rather uncommon on this model, we've managed to break a couple of the OEM lower spring retainers during extreme driving. Due to this, RT Pro has designed custom billet Race Retainers which substantially improve on the original design by increasing the cross sectional area of the part as well as employing much better materials. All Race Retainers are gold anodized. Add these to your order HERE for the ultimate spring package.
In over a decade of selling OEM replacement springs we've found our kits are more than enough for 80% off all UTV owners to be completely happy with their suspension. For the remaining 20% we recommend revalving or completely new shocks. The 20% is made up of extremely hard drivers who spend a lot of time in their UTV either racing or riding hard every weekend. For the average trail rider who goes once or twice a month revalving really isn't needed with our springs. Unlike any other kit on the market, our kits are designed to optimize the OEM valving.
For the ultimate performance from the OEM shocks, add these springs and contact William Yokley of Yokley Racing in Kentucky for revalving. William has been building shocks for years and knows how to make them work for each application. He's a 5 time GNCC national champion UTV racer and also has a WORCS UTV championship as well as many other racing successes to back up his knowledge and ability to make a UTV work right on the track or the trail. We've tried a lot of "shock guys" and William is who we trust. He will get you what you need at a very fair price. For William's contact info feel free to message us through our contact page and we'll get you connected.
"It's hard to say what's the best when you've only tried one. At RT Pro we believe we have the best spring replacement kit in the world and are willing to put our money where our mouth is. If you have a competitorÃ¢€â ¢s spring kit and want to try ours, buy it. If you don't feel our springs are better than what you have you can send them back for a 100% refund."