SDI Dual Rate Shock Spring Kit for Polaris RZR XP 1000 & XP Turbo 4
Product Description
The SDI dual rate shock spring kit for Polaris RZR XP 1000 and XP Turbo 4 is engineered to dramatically improve suspension performance and ride quality. Designed specifically for Walker Evans equipped vehicles, this spring upgrade converts your factory suspension to a true dual-rate spring setup.
Through extensive testing and tuning, SDI developed a spring combination that utilizes both tender and main springs to deliver smoother suspension action and greater control across rough terrain. The dual-rate design helps absorb small bumps while providing additional support during large impacts.
This setup helps reduce body roll, nose dive (bucking), and harsh bottom-outs, improving stability and rider confidence during aggressive driving. Whether you're tackling desert whoops, rocky trails, or high-speed terrain, the SDI spring kit enhances suspension performance and handling.
The kit includes motocross-inspired plastic crossover rings that allow for easy adjustment and installation, making it simple to fine-tune your suspension setup.
Manufactured in the USA using high-quality materials, this SDI spring kit is designed for durability and long-term off-road performance.
Key Features
• Converts factory suspension to a true dual-rate spring setup
• Fine-tuned and tested for improved ride quality
• Helps reduce body roll and nose dive (bucking)
• Increases resistance to bottoming out during hard impacts
• Improves suspension performance across rough terrain
• Includes durable motocross-inspired crossover rings for adjustment
• Designed specifically for Walker Evans shock-equipped vehicles
• Made in the USA for durability and performance
Kit Includes
Tender Springs — Qty 4
Main Springs — Qty 2
Crossover Rings — Qty 4
Benefits of Dual Rate Springs
Dual-rate suspension springs allow the suspension to react differently depending on the size of the impact.
Benefits include:
• Improved small bump comfort
• Increased stability at higher speeds
• Better control during large impacts and G-outs
• Reduced body roll during aggressive cornering
• Increased suspension performance across varied terrain
Fitment
Compatible with Polaris models equipped with Walker Evans Racing shocks:
- Polaris RZR XP 1000
- Polaris RZR XP Turbo
- Polaris RZR XP Turbo 4
Application: Four-Seater Models
Part Number: UDCSKP-1K417
Frequently Asked Questions
What is a dual-rate spring setup?
Dual-rate springs use two spring rates working together to provide better small bump comfort while increasing support during large suspension impacts.
Do these work with stock shocks?
These springs are designed specifically for vehicles equipped with Walker Evans Racing shocks.
Will this improve ride quality?
Yes. The dual-rate design helps reduce harsh bottom-outs, improve suspension compliance, and stabilize the vehicle during aggressive driving.
Are these springs adjustable?
Yes. The included crossover rings allow you to adjust when the secondary spring engages for different riding styles or terrain.
Upgrade Your RZR Suspension
Improve ride quality, stability, and suspension performance with the SDI Dual Rate Shock Spring Kit for Polaris RZR XP 1000 and XP Turbo 4.
Shop performance suspension upgrades today at Dunes 2 Dezert SXS.
