Progressive Suspension Cartridge – 31-4011 For Harley Motorcycles 2017-2026

Description

Motorcycle Fork Cartridge Kit for Improved Front Suspension Performance

Upgrade your motorcycle’s front suspension with a motorcycle fork cartridge kit designed to improve ride control, stability, and handling on the street. This monotube cartridge kit replaces all original equipment manufacturer (OEM) fork internals and provides a two-inch increase over stock ride height without requiring different fork tubes. It is a practical option for riders looking to enhance their front suspension while retaining their existing fork tubes, subject to vehicle compatibility.

With Frequency Sensing Technology (FST), the system is designed to help the suspension respond to changing road conditions. Its focus on braking support, cornering stability, and bottoming control makes it a potential upgrade for riders seeking a more controlled front-end feel.

Motorcycle Fork Cartridge Kit with Frequency Sensing Technology

The cartridge features Frequency Sensing Technology (FST), designed to help the suspension react to the frequency of movement caused by road surfaces and riding inputs. This technology aims to balance front-end control and ride comfort as the motorcycle travels over different street conditions.

Suspension performance depends on the motorcycle model, correct installation, rider weight, and setup. Always confirm the product’s specific fitment and adjustment requirements before purchasing.

Replace OEM Fork Internals Without Changing Fork Tubes

This fork cartridge kit is designed to replace all OEM fork internals, offering a comprehensive front suspension upgrade rather than a simple replacement of an individual internal component. The stated design allows a two-inch increase over stock ride height without changing the existing fork tubes.

Because fork dimensions and internal designs vary by motorcycle, verify compatibility with your exact year, make, and model before ordering. Professional installation is recommended when specialized suspension tools or setup procedures are required.

Two-Inch Over Stock Ride Height

One of the key features of this motorcycle fork cartridge kit is its stated two-inch extension over stock ride height. This design is intended to change the front suspension height while retaining the original fork tubes. Riders should consider how a change in front ride height may affect steering geometry, handling characteristics, and overall motorcycle balance.

Check the manufacturer’s application details and installation instructions to confirm the intended height change and ensure the kit is suitable for your motorcycle.

Improved Resistance to Brake Dive

During braking, front suspension compression can affect the motorcycle’s feel and stability. This cartridge kit is designed to improve resistance to brake dive, helping the front end feel more controlled during deceleration. Actual results depend on braking force, suspension setup, road conditions, and the motorcycle’s existing components.

Enhanced Front-End Stability and Cornering

Stable front suspension can help riders maintain a more predictable feel when steering and cornering. This monotube fork cartridge kit is designed to improve front-end stability and cornering control for street riding. Proper fitment, correct installation, tire condition, and suspension setup remain important factors in overall handling.

Improved Bottoming Control

When the front suspension uses too much of its available travel, it may reach the end of its stroke, commonly known as bottoming out. This kit is designed to improve bottoming control, supporting more controlled suspension movement under demanding riding inputs. Results can vary with motorcycle fitment, rider load, road surface, and setup.

Motorcycle Fork Cartridge Kit Specifications

• Product Name: Cartridge
• Product Type: Fork cartridge
• Style: Monotube
• Color/Finish: Black
• Height Adjustment: Extends 2.00 inches / 50.80 mm
• Units: Kit
• Riding Style: Street
• Technology: Frequency Sensing Technology (FST)
• OEM Replacement: Replaces all OEM fork internals
• Fork Tube Requirement: Designed to increase ride height without changing fork tubes

Check Fitment Before Ordering

Before purchasing, confirm that this motorcycle fork cartridge kit matches your motorcycle’s year, make, model, and fork configuration. The stated two-inch height extension should also be checked against the manufacturer’s application information. Incorrect fitment or installation may affect suspension function, steering geometry, and safe handling.