Walker Evans shocks have long been a favorite among Polaris RZR owners thanks to their durability, rebuildable design, compression adjustability, and Made-in-the-USA construction. From rocky trails to high-speed desert terrain, they’ve earned a reputation for delivering dependable performance.
But according to Suspension Direct (SDi), many riders are only scratching the surface of what these shocks are capable of.
Rather than replacing an entire suspension system, SDi offers a series of upgrades that improve ride quality, handling, bottoming resistance, and tuning flexibility while allowing owners to build upon the Walker Evans shocks already on their vehicle.
Dual-Rate Spring Kits
Dual-Rate Spring Kits Improve Ride Quality and Control
One of the biggest limitations of the factory Walker Evans setup is its single-rate spring configuration. A single spring must perform in every situation, from slow-speed rock crawling to high-speed desert whoops, forcing compromises in comfort and control.
SDi’s Dual-Rate Spring Kits convert the shocks into a true dual-rate system using two springs and a crossover ring. This allows each spring to work within its ideal operating range, improving performance across a much wider variety of terrain.
Benefits include:
- Reduced body roll while cornering
- Less front-end dive during braking
- Increased resistance to bottoming on hard impacts
- Improved compliance over small rocks and washboard terrain
The spring kits are available for many Polaris RZR models equipped with Walker Evans shocks.
Walker Evans Valving Kits
Performance Valving Kits Bring Custom Suspension Tuning
For riders looking for even more control, SDi also offers Performance Valving Kits for Walker Evans 2.0- and 2.5-inch shocks found on 2014-2025 Polaris RZR XP 1000 and XP Turbo models.
Unlike many revalve kits that simply replace shims, SDi’s system includes a new high-performance piston, optimized valving components, and a detailed tuning guide with multiple configurations for different terrain and driving styles.
Whether the goal is a smoother trail ride, better desert performance, or increased bottoming resistance, the kits allow owners to customize suspension behavior to match how—and where—they ride.
Front Shaft Upgrade for Pro R and Turbo R
Stronger Front Shaft Upgrade for Pro R and Turbo R
Owners of the Polaris RZR Pro R and Turbo R equipped with Walker Evans shocks can also upgrade one of the suspension’s known weak points.
SDi’s Billet Front Fork and Shaft Upgrade replaces the restrictive factory fork assembly with a precision-machined 7075 aluminum billet component that improves oil flow while increasing durability and tuning capability.
The package includes:
- Larger 3/4-inch shaft threads for added strength
- Larger 5/8-inch valving pin to replace the smaller factory design
- SDi High Flow piston
- Performance shaft valving package
- Low-friction piston band
- Ready-to-install design using factory spring components
The result is a more durable suspension capable of handling aggressive riding while providing more consistent damping performance.
High- and Low-Speed Compression Adjuster
Separate High- and Low-Speed Compression Adjustment
Factory Walker Evans compression adjusters use a single knob to control compression damping. While effective, one adjustment must balance both low-speed chassis movements and high-speed impacts.
SDi’s High/Low Speed Compression Adjuster separates these functions into independent adjustments, giving riders much finer control over suspension performance.
With separate clickers for high- and low-speed compression, riders can reduce body roll and chassis movement without sacrificing comfort over rocks, roots, and square-edged bumps.
The adjusters fit Walker Evans 2.5-inch and 3.0-inch shocks and feature motocross-style clickers for precise tuning.
Extended Reservoir Cap
Small Upgrade, Big Convenience
SDi also offers an Extended Reservoir Cap that addresses one of the more common maintenance frustrations with Walker Evans shocks.
The replacement cap swaps the factory fill needle for a standard Schrader valve, making servicing significantly easier while also increasing reservoir volume to help improve cooling during extended hard riding.
Each cap includes the air valve and O-ring for straightforward installation.
Compatible Polaris Models
Many of SDi’s Walker Evans upgrades are available for:
- Polaris RZR XP 1000
- Polaris RZR Turbo S
- Polaris RZR Pro XP
- Polaris RZR Pro R
- Polaris RZR Turbo R
SDi E-CLIK Walker Evans Conversion
Looking Beyond Mechanical Upgrades
For riders wanting the next level of suspension performance, SDi also offers its E-CLIK electronic suspension technology. Available as complete shock packages or conversions for Walker Evans shocks, E-CLIK adds electronically adjustable damping to improve ride quality across changing terrain while maintaining the benefits of the Walker Evans platform.
Final Thoughts
Walker Evans shocks already provide a solid foundation for Polaris RZR owners, but SDi’s lineup demonstrates how much additional performance can be unlocked without replacing the entire suspension system. From dual-rate spring conversions and advanced valving to stronger front components and electronic damping control, riders can tailor their suspension to better match their driving style and terrain.
For owners looking to improve handling, ride comfort, and durability while keeping their Walker Evans shocks, SDi’s upgrade program offers a modular approach that can grow with the vehicle.
About Suspension Direct Inc.
Suspension Direct Inc. (SDi) has been a leader in suspension and chassis innovation since 2006, developing high-performance solutions for UTVs, motocross motorcycles, trucks, and off-road vehicles. Based in Lake Elsinore, California, SDi is known for its advanced suspension technologies, including E-CLIK electronic shock control, E-LINK active sway bar systems, custom spring kits, shock tuning services, and premium suspension components. The company also works closely with leading suspension manufacturers including Walker Evans, Fox, WP, Showa, and KYB to provide riders with race-proven products and expert technical support. To learn more about SDi’s complete lineup of suspension upgrades and services, visit https://www.suspensiondirect.com.
