FSR-48 Complete Racing Front Fork for WP Xact MX – Sphere 3.0

The Dal Soggio 1P.FSR-48XACTMX3.0 FSR-48 Complete Front Fork is a high-performance suspension system developed specifically for WP Xact MX 2021–2026 applications.

Rather than upgrading only the internal cartridge of the original fork, the FSR-48 is a complete front fork assembly engineered from the ground up using premium materials, precision machining, advanced surface treatments, and Dal Soggio’s Sphere 3.0 hydraulic closed-cartridge technology. Dal Soggio officially identifies this SKU as the WP Xact MX 21–26 3.0 configuration.

The outer tubes are manufactured from ERGAL 7075 T6 aluminum alloy and are extensively machined internally to promote smooth suspension movement and reduce internal friction.

The inner tubes combine an external DLC coating with internal hard anodizing, providing a low-friction sliding surface together with increased surface hardness and wear resistance.

At the core of the fork is Dal Soggio’s Sphere 3.0 hydraulic closed cartridge, designed to provide precise damping control, sensitivity, and consistent performance under demanding motocross conditions.

The fork is equipped with SKF seals, while the axle lugs are manufactured from ERGAL 7075 T6 and completely CNC machined from solid material for precise geometry and structural consistency.

Dal Soggio also offers spring rates from 4.4 N/mm to 5.2 N/mm across the FSR-48 platform, allowing the fork to be configured according to rider weight, riding level, and track conditions.

Key Features

• Complete FSR-48 racing front fork developed specifically for WP Xact MX 2021–2026 applications
• Sphere 3.0 hydraulic closed-cartridge system provides precise and consistent damping control
• ERGAL 7075 T6 outer tubes feature extensive internal machining for smooth suspension movement
• Inner tubes combine external DLC coating with internal hard anodizing for reduced friction and increased durability
• CNC-machined ERGAL 7075 T6 axle lugs and premium SKF seals complete the high-specification construction

Application & Compatibility

• WP Xact MX – 2021–2026

The official Dal Soggio product page identifies this SKU specifically for the WP Xact MX 21–26 platform.

Exact motorcycle model compatibility should still be verified before ordering, because Dal Soggio defines this product by WP fork platform and model-year range rather than publishing a complete motorcycle fitment list on the product page.

Suspension Technology

Sphere 3.0 Closed Cartridge

The FSR-48 uses Dal Soggio’s Sphere 3.0 hydraulic closed-cartridge system, integrating the damping technology directly into a complete fork assembly.

This configuration is designed to provide consistent hydraulic control and precise suspension response under repeated braking, acceleration, jump landings, and high-load motocross conditions.

ERGAL 7075 T6 Construction

Dal Soggio uses ERGAL 7075 T6 for both the outer tubes and axle lugs.

The outer tubes are extensively machined internally, while the lower axle lugs are CNC machined completely from solid material, combining precision manufacturing with high-strength construction.

DLC & Hard-Anodized Inner Tubes

The inner tubes feature:

• DLC coating on the external sliding surface
• Hard anodizing on the internal surface

These treatments are intended to improve sliding behavior, wear resistance, and consistency during repeated fork movement.

Spring & Setup Information

Dal Soggio lists spring rates from 4.4 N/mm through 5.2 N/mm for the FSR-48 platform. Final spring selection should be matched to rider weight, riding level, motorcycle setup, and track conditions.

Service Fluid

Dal Soggio specifies Cube 5W suspension oil for the FSR-48 front fork.

Installation & Setup Note

The 1P.FSR-48XACTMX3.0 is a complete front fork assembly developed for the WP Xact MX 2021–2026 platform.

Before installation, verify:

• motorcycle application,
• axle and brake interface,
• fork clamp compatibility,
• spring rate,
• damping setup,
• fork height and chassis balance.

Professional suspension installation and setup are recommended to ensure correct fitment and obtain the intended performance.

This SKU is the WP Xact MX 2021–2026 version and should not be confused with the WP Xact Enduro or later Xact CC FSR-48 configurations, which use different part numbers.