{"product_id":"zbroz-dual-rate-spring-kit-rzr-pro-r4-fox","title":"RZR Pro R 4 Stage 1 Spring Kit – Fox Dynamix | ZBroz Racing","description":"\u003ch1\u003eRZR Pro R 4 Stage 1 Spring Kit – Fox Dynamix by ZBroz Racing\u003c\/h1\u003e\n\u003cp\u003eUnlock the full performance of your Polaris RZR Pro R 4-Seat with Fox Dynamix Live Valve shocks. The ZBroz Stage 1 Dual Rate Spring Kit delivers race-inspired handling without a full shock revalve — improving comfort, control, and bottoming resistance across desert, dune, and trail terrain.\u003c\/p\u003e\n\u003cp\u003eTuned specifically for the 4-seat Pro R chassis weight and Fox Dynamix shock geometry, this kit also compensates for the added load of cages, roof racks, winches, and full crew loads — so your ride stays composed whether you're solo or hauling four passengers.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Rate Spring Technology\u003c\/strong\u003e — combines low-speed plushness with high-speed control\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTuned for 4-Seat Pro R Chassis\u003c\/strong\u003e — handles the heavier wheelbase and crew load\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFox Dynamix-Specific Fit\u003c\/strong\u003e — matched to factory Fox Live Valve Dynamix shock geometry\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReduced Body Roll \u0026amp; Rear Bucking\u003c\/strong\u003e in corners and over washboard chop\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncreased Bottom-Out Resistance\u003c\/strong\u003e for jumps, g-outs, and aggressive landings\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Tensile Lightweight Springs\u003c\/strong\u003e — durable without the weight penalty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eStage 1 dual rate spring kit (front + rear)\u003c\/li\u003e\n  \u003cli\u003eDesigned for OEM Fox Dynamix Live Valve shocks\u003c\/li\u003e\n  \u003cli\u003eHigh-tensile silicone chrome wire construction\u003c\/li\u003e\n  \u003cli\u003ePowder-coated finish\u003c\/li\u003e\n  \u003cli\u003eTuned for 4-seat Pro R chassis weight\u003c\/li\u003e\n  \u003cli\u003eDesigned and manufactured by ZBroz Racing in the USA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePolaris RZR Pro R 4-Seat (2022-2025)\u003c\/li\u003e\n  \u003cli\u003eEquipped with Fox Dynamix Live Valve shocks only\u003c\/li\u003e\n  \u003cli\u003eNot compatible with Walker Evans or non-Dynamix shock systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003ch3\u003eWill this kit fit my Pro R 4 with Walker Evans shocks?\u003c\/h3\u003e\n\u003cp\u003eNo. This kit is tuned specifically for Fox Dynamix Live Valve shocks on the Pro R 4. ZBroz offers a separate Walker Evans-compatible spring kit for the same chassis.\u003c\/p\u003e\n\u003ch3\u003eDoes this kit work with stock Dynamix electronic controls?\u003c\/h3\u003e\n\u003cp\u003eYes. The dual rate springs work seamlessly with the factory Dynamix Live Valve electronic damping system — no controller modifications required.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the 2-seat Pro R?\u003c\/h3\u003e\n\u003cp\u003eNo. This kit is rated for the 4-seat chassis weight. The 2-seat Pro R uses the dedicated ZBroz Pro R 2-Seat Fox Dynamix spring kit.\u003c\/p\u003e\n\u003ch3\u003eHow long does installation take?\u003c\/h3\u003e\n\u003cp\u003ePlan 2-3 hours per side with basic shock service tools and a spring compressor. ZBroz includes setup instructions, and Dunes 2 Dezert SXS can recommend a local installer if needed.\u003c\/p\u003e\n\u003ch3\u003eWhat's included in the kit?\u003c\/h3\u003e\n\u003cp\u003eFront and rear dual rate springs tuned to the Pro R 4 chassis. Shocks and shock hardware are not included — the kit installs over your existing Fox Dynamix shocks.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy ZBroz\u003c\/h2\u003e\n\u003cp\u003eZBroz Racing is a Utah family-owned suspension manufacturer with decades of experience tuning UTV chassis. Every spring rate is developed in-house and proven in real desert and dune conditions before it ships. The Pro R 4 dual rate kit reflects multiple seasons of race-bred refinement — a cost-effective alternative to revalving or replacing your factory Fox Dynamix shocks.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCTA\u003c\/h2\u003e\n\u003cp\u003eRestore ride height, sharpen handling, and unlock real performance from your Pro R 4. Order the ZBroz Stage 1 Dual Rate Spring Kit (Fox Dynamix) today. Order from Dunes 2 Dezert SXS.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eInstall Video\u003c\/h2\u003e\n\u003cp\u003eWatch the official ZBroz Racing install walkthrough for the Polaris RZR Pro R Fox Dynamix (Live Valve) Stage 1 Dual Rate Spring Kit. The same install procedure applies to both 2-seat and 4-seat Pro R chassis.\u003c\/p\u003e\n\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;max-width:100%;\"\u003e\n  \u003ciframe src=\"https:\/\/www.youtube.com\/embed\/7rQY5wgupkw\" title=\"Polaris Pro R FOX Live Valve Spring Kit Install\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen style=\"position:absolute;top:0;left:0;width:100%;height:100%;\"\u003e\u003c\/iframe\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Will this kit fit my Pro R 4 with Walker Evans shocks?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. This kit is tuned specifically for Fox Dynamix Live Valve shocks on the Pro R 4. 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