Tuning Kits Forks

WP AER 48 Spring Kit



Same performance as the AER 48, but conventional spiral spring system

Newest technology paired with traditional concept

High quality parts

Original WP part


Technical description

During the development of the WP AER 48, WP benchmarked the AER system with conventional systems, which use spiral springs. Both systems showed different advantages, which were each favored by different riders. In order to provide both options, WP has decided to also provide a retrofitting kit, which simply allows rebuilding the AER 48 technology into a conventional system. With this kit, the AER 48 air cartridge on the air fork leg is replaced with a spring cartridge kit. All functionalities remain at the same level, with the feeling and functionality of the conventional system. The damping side remains unchanged.

Technical data

  • Piston 20 mm
  • Piston rod 12 mm


  • Spring Preload  

Installation guide

The WP AER 48 Spring Kit is retrofitted to the air fork leg of your AER 48. This can be done by any WP Supplier. Alternative springs are available for an individual setup. The performance of the WP AER 48 Spring Kit can be further enhanced in combination with the WP TRAX Shock Absorbers.


Individual suspension elements for each type of rider - configure your own suspension setup.

start configuration