RZR Pro XP 4 Stage 1 Spring Kit – Fox Dynamix by ZBroz Racing

Get more from your Polaris RZR Pro XP 4-Seat with Fox Dynamix Live Valve shocks. The ZBroz Stage 1 Dual Rate Spring Kit delivers restored ride height, plush small-bump response, and big-hit bottoming resistance — while preserving every Dynamix Live Valve electronic feature.

Tuned for the 4-seat Pro XP chassis and Fox Dynamix shock geometry, this kit handles the added load of cages, roof racks, winches, and full crew weight — keeping your Pro XP 4 composed across any terrain.

Key Features

• Dual Rate Spring Technology — soft initial stroke, progressive rate for big hits
• Tuned for 4-Seat Pro XP Chassis — handles the longer wheelbase and crew weight
• Fox Dynamix-Specific Fit — matched to factory Live Valve shock geometry
• Preserves Dynamix Live Valve Functionality — works with the factory electronic damping
• Restores Lost Ride Height from sag and accessory load
• High-Tensile Lightweight Springs — durable, powder-coated, USA-made

Specifications

• Stage 1 dual rate spring kit (front + rear, 4-seat)
• Designed for OEM Fox Dynamix Live Valve shocks
• High-tensile silicone chrome wire construction
• Powder-coated finish
• Tuned for 4-seat Pro XP chassis weight
• Designed and manufactured by ZBroz Racing in the USA

Fitment

• Polaris RZR Pro XP 4-Seat
• Equipped with Fox Dynamix Live Valve shocks only
• Not compatible with Walker Evans or non-Dynamix shock systems

FAQ

Will this fit my Pro XP 4 with Walker Evans shocks?

No. This kit is tuned for Fox Dynamix Live Valve shocks. Walker Evans shocks require ZBroz's dedicated Walker Evans Pro XP 4 spring kit.

Will it fit the 2-seat Pro XP?

No. This kit is rated for the 4-seat chassis weight. The 2-seat Pro XP uses ZBroz's dedicated 2-seat Fox Dynamix spring kit.

Will Dynamix Live Valve still work after install?

Yes. The dual rate springs work seamlessly with the factory Dynamix Live Valve electronic damping — no controller modifications, no recalibration, no warning lights.

How much ride height does it add?

Most owners see 1-2 inches of ride height recovery depending on accessories and current spring sag. The dual rate design restores factory-intended geometry.

Is installation DIY-friendly?

Yes — plan 2-3 hours per side with basic shock service tools and a spring compressor. Setup instructions are included.

Why ZBroz

ZBroz Racing engineers UTV suspension at their Utah facility with rates developed in real race and trail conditions. The Pro XP 4 Fox Dynamix kit reflects extensive testing on Polaris's high-output 4-seat platform — designed to complement Live Valve rather than fight it.

CTA

Done with factory sag on your Pro XP 4? Add the ZBroz Stage 1 Dual Rate Spring Kit (Fox Dynamix) and unlock the suspension your RZR was built to deliver. Order from Dunes 2 Dezert SXS.