SPRING CONVERSION Kit: WP AER 43 (.39kg)

Lainer Suspension Dual Spring Conversion Kit – WP AER 43 (.39kg)

Lainer Suspension Dual Spring Conversion Kit – WP AER 43 (0.39 kg/mm)

Upgrade your WP AER 43 forks with the Lainer Dual Spring Conversion Kit — engineered to replace the stock air system with a precision dual-spring setup. The result? Increased stability, consistent performance, smoother small-bump absorption, and a more planted front-end feel.

By removing the air system’s pressure fluctuations and temperature sensitivity, this kit ensures predictable suspension performance lap after lap — no more chasing settings between motos.

It delivers increased bottoming resistance, giving you the confidence to charge harder through rough terrain and big landings. Premium CNC-machined aluminum and high-grade nylon internals ensure exceptional durability and long-term performance.

Technical Details:

• Complete Dual Spring System (springs included)

• Spring Rate: K 0.39 (ideal for rider weight: 120–136 lbs)

• Built-in Hydrostop for added bottoming resistance

• High-strength aluminum and nylon components replace stock plastic parts

• Maintains compatibility with the OEM air system if desired (for hydraulic upgrade only)

Applications:

• KTM SX 85 (2018–2025)

• Husqvarna TC 85 (2018–2025)

• GASGAS MC 85 (2021–2025)

Notes:

• For optimal results, we recommend pairing this conversion with the Lainer WP AER 43 Compression Kit. <Learn More>

Installation Instructions: <Learn More>