Polaris RZR Pro XP 4 Stage 1 Dual Rate Spring Kit (FOX Dynamix) by ZBroz Racing

Transform your 4-seat Pro XP's factory FOX Dynamix shocks into a true dual-rate setup. The ZBroz Pro XP 4 Stage 1 dual rate spring kit FOX Dynamix upgrades OEM FOX Dynamix single-rate springs on your Pro XP 4 to a dual-rate setup with adjustable billet crossover rings — tuned for the longer wheelbase and 4-passenger loads. The smartest first suspension upgrade for any FOX Dynamix-equipped Pro XP 4.

Key Features

• Converts OEM single-rate to dual-rate using crossover rings
• Adjustable billet crossover rings
• Stage 1 spring rates tuned for the 4-seat chassis
• Direct fit on OEM FOX Dynamix shocks
• Tuned for Pro XP 4-passenger weight
• Shot-peened pre-set chrome silicone wire springs
• Made in the USA

Specifications

• Type: Dual-rate spring kit with crossover rings (Stage 1)
• Shock compatibility: OEM Polaris FOX Dynamix (Pro XP 4)
• Application: 4-seat Polaris RZR Pro XP 4 with FOX Dynamix factory shocks

Fitment

This Pro XP 4 FOX Dynamix springs kit fits the 4-seat Polaris RZR Pro XP 4 with FOX Dynamix shocks. For 2-seat Pro XP/FOX Dynamix, see K25-PL1031-0. For Walker Evans-equipped Pro XP 4, see K25-PL1032-0.

Frequently Asked Questions

What does the dual-rate setup do?

A dual rate spring kit uses two rates: soft initial for small-bump comfort and progressive for big hits. The crossover ring lets you tune the transition.

Will this fit my 2-seat Pro XP?

No — this kit is 4-seat Pro XP 4 specific. For 2-seat Pro XP with FOX Dynamix, use K25-PL1031-0.

What if I have Walker Evans shocks?

Use K25-PL1032-0 for Walker Evans-equipped Pro XP 4. Spring dimensions differ between shock types.

Why are these tuned differently from the 2-seat kit?

The 4-seat Pro XP 4 has a longer wheelbase and 4-passenger weight — this Pro XP 4 dual rate spring kit with crossover rings uses rates tuned for that mass and geometry.

Is this better than new shocks?

For value-conscious upgrades, this Stage 1 spring upgrade for Pro XP 4 FOX Dynamix delivers measurable ride quality without the cost of new shocks.

Why ZBroz Racing

ZBroz spring kits leverage the same engineering depth as the EXIT shock platform. As a Polaris RZR Pro XP 4 dual rate springs for FOX Dynamix shocks kit, this delivers real ride quality gains at a fraction of new shock cost. The off-road Polaris RZR Pro XP 4 FOX Dynamix spring upgrade that maxes out your factory hardware. The smart UTV dual rate springs and RZR Pro XP 4 springs path for 4-seat owners. As a Pro XP 4 spring kit, this is the 4-seat FOX Dynamix option.

Order Yours Today

Upgrade your 4-seat Pro XP's ride without new shocks. Add the ZBroz Pro XP 4 Stage 1 dual rate spring kit (FOX Dynamix) to your order. Shop/Order from Dunes 2 Dezert SXS.