SDI Performance Spring Kit for the 2025+ Polaris RZR XP S 4 Seater

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 2025+ Polaris RZR XP S 4 Seater Vehicles
• Gives your RZR a true dual rate setup, utilizing both springs. 
• Greatly reduces body roll, nose dive (Bucking), and bottoming (G-Out Resistance) 
• Kit Includes: 4 Tender Springs and 4 Main Springs
• Available in Performance and Heavy Duty
• Made in the USA

SDI Heavy Duty Spring Kit for the 2025+ Polaris RZR XP S 4 Seater

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 2025+ Polaris RZR XP S 4 Seater Vehicles
• Gives your RZR a true dual rate setup, utilizing both springs. 
• Greatly reduces body roll, nose dive (Bucking), and bottoming (G-Out Resistance) 
• Kit Includes: 4 Tender Springs and 4 Main Springs
• Available in Performance and Heavy Duty
• 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 Aluminum Reservoir Cap for Walker Evans 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
- Complete with Air Valve and O-Ring

SDI Seal Kit - Walker Evans 5/8ths

Fits: 5/8ths Walker Evans Shocks

SDi makes it easy to get the seals you need for basic service UTV Shock service. These kits include Seal Case O-Rings, Floating Piston O-Rings (and bands, when applicable), Piston O-Rings, Oil Seal, Dust Seal, and piston wear bands on applicable applications.

SDI Seal Kit - Walker Evans 7/8ths

Fits: 7/8ths NON-VELOCITY Shocks

SDi makes it easy to get the seals you need for basic service UTV Shock service. These kits include Seal Case O-Rings, Floating Piston O-Rings (and bands, when applicable), Piston O-Rings, Oil Seal, Dust Seal, and piston wear bands on applicable applications.

SDI Seal Kit - Walker Evans 3/4ths

Fits: 3/4ths Walker Evans Shocks (Not Pro XP, General)

SDi makes it easy to get the seals you need for basic service UTV Shock service. These kits include Seal Case O-Rings, Floating Piston O-Rings (and bands, when applicable), Piston O-Rings, Oil Seal, Dust Seal, and piston wear bands on applicable applications.