RZR XP 4 1000/Turbo Stage 1 Spring Kit – Fox IBP by ZBroz Racing

Transform your Polaris RZR XP 4 1000 or XP 4 Turbo with Fox IBP shocks using the ZBroz Stage 1 Dual Rate Spring Kit. Engineered for the 4-seat chassis with Internal Bypass shocks, this kit delivers restored ride height, plush small-bump compliance, and dramatically improved bottoming resistance.

Whether you're trail riding, rock crawling, or running a fully loaded RZR with cages and four passengers, this dual rate kit gives your XP 4 the control and bottoming protection factory single-rate springs can't match.

Key Features

• Dual Rate Spring Technology — soft initial stroke, progressive rate for big hits
• Tuned for 4-Seat XP Chassis — handles the longer wheelbase and crew weight
• Fox IBP-Specific Fit — matched to Internal Bypass shock geometry
• Restores Lost Ride Height from sag and accessory load
• Reduced Body Roll & Rear Bucking in aggressive trail conditions
• High-Tensile Lightweight Springs — durable, powder-coated, USA-made

Specifications

• Stage 1 dual rate spring kit (front + rear, 4-seat)
• Designed for OEM Fox IBP (Internal Bypass) shocks
• High-tensile spring steel construction
• Powder-coated finish
• Tuned for 4-seat XP 4 1000/Turbo chassis weight
• Designed and manufactured by ZBroz Racing in the USA

Fitment

• Polaris RZR XP 4 1000 (Fox IBP equipped)
• Polaris RZR XP 4 Turbo (Fox IBP equipped)
• Not compatible with Walker Evans or Fox Live Valve shock systems

FAQ

What is Fox IBP?

Fox IBP stands for Internal Bypass. These are an upgraded factory shock option on some RZR XP models, featuring position-sensitive damping internally. This kit is sized for IBP shock dimensions — not standard Fox or Walker Evans.

Will this fit my XP 4 1000 with Walker Evans shocks?

No. This kit is specifically for Fox IBP shocks. Walker Evans shocks require ZBroz's dedicated Walker Evans XP 4 spring kit.

Will it fit the 2-seat XP 1000/Turbo?

No. This kit is rated for the 4-seat XP 4 chassis weight. The 2-seat XP 1000/Turbo uses ZBroz's dedicated 2-seat Fox IBP spring kit.

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 builds UTV suspension at their Utah facility with rates developed and proven in real off-road conditions. The XP 4 1000/Turbo Fox IBP kit reflects multiple seasons of testing — engineered to deliver measurable ride quality at a fraction of a revalve cost.

CTA

Stop accepting factory sag on your XP 4. Add the ZBroz Stage 1 Dual Rate Spring Kit (Fox IBP) and unlock the suspension Polaris should have delivered. Order from Dunes 2 Dezert SXS.