K-Tech 20IDS (20mm Independent Damping System) front fork cartridges are a complete replacement damping system designed to fit into original equipment front forks that do not allow for external compression adjustment. The 20IDS cartridges are designed and manufactured in house to the same standard as all our performance products using the highest grade materials and processes. The 20IDS cartridges have independent compression and rebound damping adjustment and spring preload.