Dal Soggio SPHERE 3.0 WP 48 4CS MX Cartridge Kit

The Dal Soggio SPHERE 3.0 WP 48 4CS MX Cartridge Kit is a high-performance suspension upgrade developed specifically for WP 48 4CS motocross forks fitted to compatible KTM and Husqvarna motorcycles.

Dal Soggio officially identifies SKU 1P.SPH.4CSCR3.0 as the Sphere 4CS Cross 3.0 version, designed for motocross applications within the WP 4CS fork family.

SPHERE 3.0 is the latest evolution of Dal Soggio Race’s sealed and pressurized hydraulic cartridge system, developed through extensive dyno and track testing to increase fork sensitivity, precision, hydraulic control, and rider feedback.

A key improvement is the redesigned bladder, featuring a thinner yet stronger construction. This allows the cartridge to react more sensitively while improving precision during the hydraulic bleeding process.

The redesigned compression base valve features separate High-Speed Compression and Low-Speed Compression settings. Each damping range can therefore be adjusted independently, giving suspension technicians greater freedom to tailor fork behavior to rider weight, skill level, riding style, and track conditions.

Another major development is the new 36 mm compression piston, replacing the previous 28 mm configuration. The larger piston is intended to improve the linearity of the front fork’s hydraulic response throughout the suspension stroke.

SPHERE 3.0 also incorporates Dal Soggio’s Direct Flow Technology. The compression piston receives oil directly rather than through the previous Z-shaped passages, reducing internal flow restrictions and hydraulic stress within the cartridge.

For motocross use, these features are designed to provide a more precise and responsive front end while maintaining hydraulic support through braking bumps, acceleration chop, ruts, jumps, landings, and other high-load track conditions.

Dal Soggio specifies CUBE Fork Oil 5W for use inside the SPHERE cartridge system.

Key Features

• Sealed and pressurized SPHERE 3.0 hydraulic cartridge developed for WP 48 4CS motocross forks
• New thinner and stronger bladder improves cartridge sensitivity and hydraulic bleeding precision
• Separate High-Speed and Low-Speed Compression settings allow independent compression damping adjustment
• New 36 mm compression piston improves hydraulic linearity compared with the previous 28 mm design
• Direct Flow Technology feeds oil directly to the compression piston to reduce internal flow restriction and cartridge stress

Technical Specifications

Specification	Details
Manufacturer	Dal Soggio Race
Part Number / SKU	1P.SPH.4CSCR3.0
Product Name	SPHERE 3.0 WP 48 4CS MX
Product Type	Hydraulic Fork Cartridge Kit
Series	SPHERE 3.0
Fork Platform	WP 48 4CS
Discipline	Motocross / Cross
Motorcycle Brands	KTM / Husqvarna
Dal Soggio Compatibility Range	2013-2016
Cartridge Type	Sealed and Pressurized Hydraulic Cartridge
Compression Piston Diameter	36 mm
Previous Piston Diameter	28 mm
Compression Adjustment	Separate High-Speed and Low-Speed Compression
Bladder	New thinner and stronger design
Hydraulic Technology	Direct Flow Technology
Specified Oil	Dal Soggio CUBE Fork Oil 5W
Installation Type	Internal Fork Cartridge Replacement / Upgrade
Professional Installation	Recommended

Application & Compatibility

The 1P.SPH.4CSCR3.0 SPHERE 3.0 is designed for compatible WP 48 4CS motocross front forks.

Dal Soggio officially classifies this version as:

WP 4CS – KTM / Husqvarna – Cross – 2013-2016.

This product should not be confused with SKU 1P.SPH.4CSEN3.0, which is the dedicated SPHERE 3.0 version for WP 4CS Enduro applications.

Because WP fork equipment can vary according to model, production year, specification, and market, compatibility should ultimately be confirmed from the actual fork fitted to the motorcycle rather than from model year alone.

Hydraulic System & Performance

SPHERE 3.0 replaces the original internal damping arrangement with a sealed and pressurized hydraulic cartridge engineered to provide more precise and consistent suspension control.

The redesigned bladder improves hydraulic sensitivity, while the separated high-speed and low-speed compression circuits provide a broader range of tuning possibilities.

The 36 mm compression piston increases the working diameter compared with the previous 28 mm configuration and contributes to a more linear hydraulic response.

With Direct Flow Technology, oil reaches the compression piston directly, reducing unnecessary internal routing and helping the cartridge operate with lower hydraulic stress.

Motocross Application

Motocross suspension must operate across a wide range of shaft speeds and impact loads.

The independent compression damping circuits allow the suspension technician to address slower chassis movements separately from faster impacts generated by braking bumps, square edges, jump landings, and aggressive track inputs.

This makes the SPHERE 3.0 WP 48 4CS MX suitable for riders looking to improve sensitivity, hydraulic control, front-end feedback, and suspension tuning flexibility on a compatible WP 4CS motocross fork.

Oil & Service

Dal Soggio specifies CUBE Fork Oil 5W for the SPHERE hydraulic cartridge.

Correct oil quantity, cartridge bleeding, spring setup, damping adjustment, and overall chassis balance are essential for proper suspension performance.

Professional installation and setup by a qualified off-road suspension specialist are recommended.

Installation Note

Before installation, confirm:

• correct WP 48 4CS fork platform;
• motocross / Cross configuration;
• compatible KTM or Husqvarna application;
• correct Dal Soggio SKU 1P.SPH.4CSCR3.0.

The SPHERE cartridge should be installed and set up according to the rider’s weight, ability, riding style, track conditions, and motorcycle configuration.