SDI Spring Kit for the 2018-21 Polaris RZR XP Turbo S

Take the guess work out of getting more out of your UTV’s Shocks. SDI’s Spring Kits have been fine tuned and tested to improve your vehicle’s ride.

• For use on Polaris XP Turbo S Vehicles
• Gives your RZR a true dual rate setup, utilizing both springs. 
• Greatly reduces body roll, nose dive (Bucking), and bottoming (G-Out Resistance) 
• Motocross-inspired crossover ring for easy adjustments and installation
• Kit Includes: 4 Tender Springs, 4 Main Springs. 4 Crossovers
• Made in the USA

SDI High Low Speed Adjuster for Walker Evans Shocks

- For Walker Evans 2.5 Shocks
- Game-Changing Seperate High/Low Speed Compression Adjustment
- Address the walloy feeling while cornering, without losing plushness over breaking bumps & square edge bumps. This maximize compliance and traction, without the worry of not being able to soak up big hits.
- "Feel" the adjustments you make through motocross style clickers, making for easy on the fly adjustments
- Made in the U.S.A.
- Installation tools: Click Here

SDI Crossover Rings for 2.5" Shocks

- Sold in pairs
- For use on 2.5 Shocks with Standard Threads
- Gives your RZR a true dual rate setup, utilizing both springs
- Greatly reduces body roll and nose dive
- Single most cost effective suspension upgrade
- Durable  Motocross-inspired ring for easy adjustments
- One piece metal design allows for easy installation and adjustment: Simply remove springs.
- Made in the USA

SDI Crossover Rings for Acme Thread 2.5" Shocks

- Sold in pairs
- For use on 2.5" Acme Threaded Shocks
- Gives your RZR a true dual rate setup, utilizing both springs
- Greatly reduces body roll and nose dive
- Single most cost effective suspension upgrade
- Durable  Motocross-inspired ring for easy adjustments
- One piece metal design allows for easy installation and adjustment: Simply remove springs.
- Made in the USA

**This part number Supersedes UDCORF25A**

SDI Crossover Rings for Acme Thread 3.0" Shocks

-Sold in pairs
- For use on 3.0" Acme Thread Shocks (Such as fox shocks)
- Gives your RZR a true dual rate setup, utilizing both springs
- Greatly reduces body roll and nose dive
- Single most cost effective suspension upgrade
- Durable  Motocross-inspired ring for easy adjustments
- One piece metal design allows for easy installation and adjustment: Simply remove springs.
- Made in the USA

**This part number Supersedes UDCORF30A**

SDI Crossover Rings for 3.05" Shocks - Acme Threads - Sold As Pairs

- Sold in pairs
- For use on 3.05 Acme Threaded Shocks
- Gives your RZR a true dual rate setup, utilizing both springs
- Greatly reduces body roll and nose dive
- Single most cost effective suspension upgrade
- Durable  Motocross-inspired ring for easy adjustments
- One piece metal design allows for easy installation and adjustment: Simply remove springs.
- Made in the USA

SDI Aluminum Reservoir Cap for Fox Shocks (Black)

- Motocross inspired extended reservoir cap
- Increases volume, helping keep the shock cooler
- Replaces the prone to leaking rubber filling needle with a standard schrader valve, making it easier to service
- Sold Individually