WP AER and XACT Spring Conversion Kit 2017 – Dal Soggio – WITHOUT Spring
Dal Soggio air-to-spring conversion kit for compatible WP AER / WP AIR and WP XACT front forks, replacing the original pneumatic spring function with a conventional coil-spring system. This version is supplied without a spring.
$629.99
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Product Description
The Dal Soggio 1P.SPRING_KIT_2017 Spring Conversion Kit is an internal front suspension conversion developed for compatible WP AIR / AER and WP XACT forks.
The system converts the original air-spring configuration to a more traditional coil-spring fork setup.
Dal Soggio designed the conversion as a simple and functional modification that acts specifically on the pneumatic portion of the fork, rather than replacing the complete damping system or entire front suspension assembly.
The original air spring is therefore replaced by a mechanical spring arrangement while the remaining fork architecture is retained.
This specific product code is supplied WITHOUT a spring, allowing the suspension technician or rider to select the spring rate separately according to rider weight, motorcycle setup, riding discipline, terrain, and desired suspension behavior.
Dal Soggio lists three spring-rate options for this conversion platform:
- 8.8 N/mm
- 9.2 N/mm
- 9.6 N/mm
Selecting the correct spring rate is essential for establishing appropriate sag, front-end support, braking behavior, and overall chassis balance.
Key Features
- Converts compatible WP AIR / AER and WP XACT front forks from an air-spring system to a traditional coil-spring configuration
- Modification replaces only the pneumatic spring portion while retaining the remaining original fork architecture
- Supplied without a spring, allowing the required spring rate to be selected separately
- Compatible spring options within the Dal Soggio conversion range include 8.8, 9.2, and 9.6 N/mm
- Provides a mechanical alternative to the original air-spring system without requiring replacement of the complete front fork
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | Dal Soggio Race |
| Part Number / SKU | 1P.SPRING_KIT_2017 |
| Product Family | Spring Kit |
| Product Type | Front Fork Air-to-Spring Conversion Kit |
| Fork Platforms | WP AIR / AER / WP XACT |
| Suspension Position | Front |
| Conversion Type | Pneumatic spring to mechanical coil spring |
| Area Modified | Pneumatic / air-spring section |
| Spring Included | No |
| Available Spring Rates | 8.8 / 9.2 / 9.6 N/mm |
| Installation Type | Internal fork conversion |
| Professional Installation | Recommended |
Application & Compatibility
The 1P.SPRING_KIT_2017 is intended for compatible WP AIR / AER and WP XACT front fork configurations.
Compatibility is determined by the actual fork architecture rather than motorcycle brand or model name alone.
Because WP air forks have been used in different internal configurations across multiple motorcycle models and model years, the exact fork specification should be verified before ordering or installation.
How the Spring Conversion Works
A WP air fork uses compressed air as the primary spring element.
The Dal Soggio Spring Kit replaces this pneumatic spring function with a conventional mechanical coil spring.
The conversion therefore changes how the fork supports motorcycle and rider weight while retaining the remaining fork and damping architecture.
This creates a suspension system whose spring force is determined primarily by the installed coil spring rather than by adjustable air pressure.
Spring Rate Options
Dal Soggio lists three spring rates for this conversion platform:
| Spring Rate | Relative Setup |
|---|---|
| 8.8 N/mm | Softer option |
| 9.2 N/mm | Intermediate option |
| 9.6 N/mm | Firmer option |
The appropriate spring should be selected according to factors such as:
- rider weight;
- riding level;
- motorcycle setup;
- terrain and discipline;
- desired static and rider sag;
- required braking support;
- front-to-rear chassis balance.
Spring rate should therefore be treated as an integral part of the suspension setup.
Without Spring Version
SKU 1P.SPRING_KIT_2017 is supplied without the coil spring.
The spring must be selected and obtained separately according to the required setup.
This allows the same conversion hardware to be combined with the most appropriate spring rate rather than supplying a predetermined rate that may not suit every rider.
Air-to-Spring Conversion
The main purpose of this kit is to replace the pneumatic spring function rather than modify the complete hydraulic damping system.
The conversion should therefore not be confused with a full cartridge replacement or complete fork upgrade.
Compression and rebound damping remain functions of the corresponding fork hydraulic system, while the Spring Kit changes the method used to generate the fork’s spring force.
Installation Note
Installation requires disassembly of the compatible WP air fork and replacement of the relevant pneumatic components with the Dal Soggio spring-conversion hardware.
The correct coil spring must then be selected and installed according to the required setup.
Proper assembly, spring selection, preload, oil level, bleeding, and final suspension adjustment are essential for correct operation.
Installation and final setup by a qualified suspension technician or Dal Soggio specialist are recommended.