SDI Dual Rate Shock Spring Kit for Polaris RZR XP 1000 (4-Seat)
Product Description
The SDI dual rate shock spring kit for Polaris RZR XP 1000 four-seat models is designed to significantly improve suspension performance, stability, and ride comfort. Through extensive testing and tuning, SDI engineered this kit to convert your suspension into a true dual-rate spring system, allowing both tender and main springs to work together throughout the suspension travel.
Dual-rate suspension springs allow the suspension to absorb small bumps more smoothly while providing additional support during large impacts. This results in improved ride quality across rough terrain and better suspension control during aggressive driving.
The SDI spring kit helps reduce body roll, nose dive (bucking), and harsh bottom-outs (G-outs), giving your RZR improved stability and control in dunes, desert terrain, and technical trails.
Each kit includes durable motocross-inspired crossover rings designed for easy installation and adjustment. These rings allow riders to fine-tune when the secondary spring engages, helping dial in suspension performance for different riding conditions.
Manufactured using high-quality materials and made in the USA, this SDI suspension upgrade delivers long-lasting durability for demanding off-road environments.
Key Features
• Converts factory suspension to a true dual-rate spring setup
• Fine tuned and tested to improve ride quality
• Helps reduce body roll and nose dive (bucking)
• Improves resistance to bottoming out during hard impacts
• Enhances suspension performance across rough terrain
• Durable motocross-inspired crossover rings for easy adjustment
• Allows tuning of secondary spring engagement
• Made in the USA for long-lasting durability
Kit Includes
Tender Springs — Qty 4
Main Springs — Qty 2
Crossover Rings — Qty 4
Benefits of Dual Rate Suspension Springs
Dual-rate suspension springs improve how your suspension reacts to both small bumps and large impacts.
Advantages include:
• Improved small bump comfort
• Increased stability during high-speed driving
• Reduced suspension bottom-outs and G-outs
• Improved traction and suspension control
• Better overall ride quality on rough terrain
Fitment
Compatible with:
- Polaris RZR XP 1000 (4-Seat) models equipped with Walker Evans Racing shocks
Part Number: UDCSKHD-1K4
Frequently Asked Questions
What is a dual-rate spring setup?
Dual-rate springs combine a softer initial spring and a firmer secondary spring to improve comfort on small bumps while providing additional support during large suspension impacts.
Are these springs compatible with factory shocks?
These springs are designed specifically for Walker Evans Racing shocks commonly found on RZR XP 1000 models.
Will this improve ride quality?
Yes. Dual-rate spring systems help smooth harsh terrain while improving suspension control and vehicle stability.
Are the springs adjustable?
Yes. The included crossover rings allow you to adjust when the secondary spring engages depending on terrain or riding style.
Upgrade Your RZR Suspension
Upgrade your Polaris RZR XP 1000 4-seat suspension with the SDI Dual Rate Shock Spring Kit to improve ride quality, stability, and off-road control.
Shop suspension upgrades today at Dunes 2 Dezert SXS.
