Polaris RZR S 900 4 Seater Tender Spring Kit (Fox Shocks)

Tender spring upgrade for your four-seat RZR S 900.

Improve trail comfort on your four-seat Polaris RZR S 900 with this All Thingz UTV tender spring kit for Fox reservoir shocks. If your compatible shocks do not already have tender springs, the kit supplies the springs and spacers needed for the conversion. Choose a full kit or the front or rear spring pair for your setup.

What this kit offers

• Trail comfort: Tender springs designed to reduce harshness over uneven ground.
• Use your existing shocks: Designed for the Fox reservoir shock package on this application.
• Full or axle-pair options: Choose the tender springs needed for your installation.

Vehicle fitment

Before ordering: Your Fox shocks must have reservoirs for this kit to fit. Confirm the installed Fox shocks and double-check your selected spring color. Match the RZR S 900 model name and four-seat configuration. Other RZR models use separate kits.

What's included

Select an available raw or powder-coated finish. Powder coating is completed in-house at All Thingz UTV; some colors carry an additional charge.

Tender spring upgrade and conversion

For compatible reservoir shocks without tender springs, the required conversion springs and spacers are supplied. Replacement shocks are not included.

Installation overview and setup

Professional installation is recommended for Fox shock models. Follow the vehicle and Fox service instructions for your exact year and shock assembly. This overview does not replace the applicable disassembly and torque procedures.

1. Park on level ground and record the starting ride height. Include your model year, accessories, and usual load when ordering.
2. Safely raise and support the vehicle. Unload the suspension before adjusting preload and release spring tension with suitable equipment before removing retainers.
3. Install the selected tender springs and any supplied conversion spacers according to the kit instructions. Follow the applicable procedure for front and rear shock removal and reassembly, and torque removed fasteners to your model's specifications.
4. Lower the vehicle and move it forward and backward to settle the suspension. Measure from the ground to the skid plate.
5. Use the table below as your setup reference. Make small adjustments with the suspension unloaded, then settle and remeasure. Keep left and right settings matched on each axle.

For kit-specific settings or a machine with added weight or modified suspension, contact All Thingz UTV.

All Thingz UTV ride-height baseline

The following figures are All Thingz UTV setup baselines for this RZR S 900 spring-kit application, organized by tire size. They are not Polaris factory specifications or independently verified measurements for every vehicle configuration.

Measurement reference: Ground to the underside of the skid plate, with the vehicle on level ground and the suspension settled after moving the vehicle forward and backward. Use consistent reference points when comparing measurements. These starting references do not guarantee a finished height; tire dimensions, pressure, passengers, accessories, and suspension setup affect the result. Listed tire sizes do not confirm tire fitment.

Spring installation video

General installation overview: Steps, hardware, and adjustments may differ by model year and shock package. Follow the service procedure for your machine and All Thingz UTV settings for this kit.

Find the correct RZR S 900 kit

These alternatives cover different shocks or seat counts; they are not required add-ons.

• RZR S 900 four-seat tender kit for Walker Evans shocks
• RZR S 900 two-seat tender kit for Fox shocks