Progressive STR46 2.0" Smooth Body Shocks (REAR)

2007–2018 Jeep Wrangler JK 3.5-5" Lift

Part #: 46-2003

Overview

The Progressive STR46 2.0" Smooth Body Shocks are engineered specifically for the rear suspension of Jeep Wrangler JK models from 2007 to 2018 equipped with a 3.5 to 5-inch lift. These shocks incorporate Progressive Suspension’s patented FST (Frequency Sensitive Technology) design, which dynamically adjusts damping in real time to provide a smoother, more controlled ride across a variety of terrains and driving conditions. Ideal for off-road enthusiasts and daily drivers alike, these shocks improve ride quality, handling, and overall vehicle stability without requiring complex manual adjustments.

Designed to complement lifted Jeep Wranglers, the STR46 shocks help maintain proper suspension geometry and enhance the vehicle’s capability both on and off the road. Whether navigating rocky trails or cruising highways, these shocks deliver consistent performance and comfort.

Key Features

The Progressive STR46 shocks feature advanced technology and thoughtful engineering to optimize suspension performance. Key features include:

• Patented FST Technology: Automatically adjusts damping curves in real time for a smooth, controlled ride.
• Optimized for Lifted JK Wranglers: Specifically tuned for 3.5 to 5-inch rear lifts to maintain suspension geometry and ride quality.
• Durable 2.0" Smooth Body Design: Provides robust construction and improved heat dissipation for consistent performance.
• Improved Ride Comfort: Reduces harshness and vibration over rough terrain without sacrificing control.
• Easy Installation: Direct bolt-on fitment with no modifications required for compatible lifted JK models.
• Enhanced Handling: Improves vehicle stability during cornering, braking, and acceleration.
• Corrosion-Resistant Finish: Built to withstand harsh environments and off-road conditions.

Construction & Design

The STR46 shocks feature a smooth 2.0-inch diameter body constructed from high-quality materials designed for durability and longevity. The smooth body design not only enhances the shock’s aesthetic but also improves heat dissipation, reducing fade during extended off-road use. Internally, the patented Frequency Sensitive Technology (FST) uses a unique valving system that responds instantly to changes in terrain and driving dynamics, adjusting damping forces without the need for manual tuning.

Each shock is engineered to withstand the rigors of lifted Jeep Wrangler JK applications, ensuring consistent performance even under demanding conditions. The corrosion-resistant finish protects the shocks from rust and environmental damage, extending their service life.

Installation & Fitment

Installation of the Progressive STR46 shocks is straightforward for Jeep Wrangler JK owners with a 3.5 to 5-inch rear lift. These shocks are designed as direct replacements for the factory rear shocks and require no special tools or modifications. Standard suspension mounting points are used, allowing for a hassle-free upgrade that restores and enhances rear suspension performance.

It is recommended to have the installation performed by a qualified technician or experienced enthusiast to ensure proper torque specifications and alignment. After installation, the shocks immediately improve ride quality and handling characteristics.

What's Included

• Two (2) Progressive STR46 2.0" Smooth Body Rear Shocks
• Mounting hardware (if applicable)
• Installation instructions

Ideal For

The Progressive STR46 shocks are ideal for Jeep Wrangler JK owners who have installed a 3.5 to 5-inch rear lift and seek improved ride comfort, handling, and suspension performance. They are perfect for off-road enthusiasts who demand reliable damping over rough terrain as well as daily drivers looking for a smoother, more controlled ride. These shocks suit those who prefer a maintenance-free, adaptive suspension solution without the complexity of manual adjustments.

Progressive Suspension is a long-running performance suspension brand best known in the motorcycle world for shocks, springs, and suspension upgrades built to improve ride control and handling. With product coverage across Harley, metric bikes, and more, Progressive is a common upgrade when riders want a more planted feel, better damping, and confidence under hard braking and cornering.