KYB 24 mm XR Bladder Upgrade Kit Dal Soggio

The Dal Soggio 1P.XR-KIT-KYBD24 XR Kit is a front suspension upgrade developed specifically for KYB forks equipped with a 24 mm diameter rebound piston.

The XR Kit introduces Dal Soggio’s bladder-based pressure compensation system into the compatible KYB cartridge and combines the conversion with specific valving developed for the XR system.

The bladder architecture is designed to manage changes in internal pressure and oil volume during fork movement while improving the sensitivity and response of the suspension.

According to Dal Soggio, the XR system is intended to make the front fork more sensitive and compliant while providing improved rider feedback across different speeds and riding conditions.

The conversion is designed as a retrofit to the original KYB suspension, allowing the internal hydraulic system to be upgraded without replacing the complete front fork assembly.

This specific 24 mm KYB version does not include the rapid spring preload adjustment system. This is an important distinction from the WP XACT CC version of the XR Kit.

Dal Soggio manufactures the XR components from high-quality aeronautical aluminum alloys and applies hard-anodized surface treatments to provide durability for demanding off-road suspension use.

Correct identification of the internal rebound piston diameter is essential before ordering: SKU 1P.XR-KIT-KYBD24 is intended exclusively for compatible KYB forks using a 24 mm rebound piston.

Key Features

• Developed specifically for KYB front forks equipped with a 24 mm diameter rebound piston
• Bladder-based suspension conversion supplied with dedicated Dal Soggio valving
• Designed to improve fork sensitivity, compliance, and rider feedback across different riding speeds
• Manufactured using high-quality aeronautical aluminum alloys with hard-anodized components
• KYB D24 version does not include the rapid spring preload adjustment system

Technical Specifications

Application & Compatibility

The 1P.XR-KIT-KYBD24 is designed for compatible KYB front forks equipped with a 24 mm rebound piston.

Compatibility is determined by the internal cartridge configuration rather than simply by motorcycle brand, model, or external fork diameter.

Dal Soggio currently identifies this product according to the 24 mm rebound piston specification, without publishing a dedicated motorcycle application list for this SKU.

For this reason, the rebound piston diameter should be physically or technically verified before ordering or installation, especially if the fork has previously been modified, replaced, or serviced with non-standard internal components.

How the XR Kit Works

The XR Kit modifies the pressure-management system inside the compatible KYB cartridge by introducing a bladder-based architecture.

During compression and rebound, changes in hydraulic volume and pressure are accommodated by the bladder. This system is designed to allow the fork to react more sensitively to suspension movement and to provide a smoother hydraulic response.

The bladder conversion is combined with specific Dal Soggio valving, so the damping characteristics are designed around the XR architecture rather than simply adding a bladder to the original configuration.

The intended effects include:

• increased initial fork sensitivity;
• smoother response over small and repeated impacts;
• improved front-wheel feedback;
• more compliant hydraulic behavior;
• improved suspension feel across different speeds.

No Rapid Preload System

The KYB D24 version of the XR Kit does not feature rapid spring preload adjustment.

This differs from the WP XACT CC XR Kit, which incorporates Dal Soggio’s externally adjustable preload system.

Spring preload on the KYB D24 application therefore remains dependent on the original fork configuration and the setup method used by the suspension technician.

Installation Note

Installation requires disassembling and servicing the fork cartridge, fitting the XR components, installing the supplied valving correctly, refilling the suspension with the appropriate fork oil, and accurately bleeding the hydraulic system.

Dal Soggio recommends installation through a qualified suspension specialist or authorized service center.

Before installation, always confirm that the KYB fork uses the required 24 mm rebound piston, as Dal Soggio also offers a separate XR Kit for KYB forks equipped with a 25 mm rebound piston.