The Öhlins FKC 101 Fork Cartridge Kit introduces Öhlins quality and performance to the front forks of the popular line of Harley Davidson FLH/FLT Touring Baggers. The goal with the new kit was to create a high-end cartridge damping system with maximum comfort for the Harley-Davidson front forks. The focus for the development of this application has been on vehicle control and a smooth comfortable ride. The kit features an 8 mm steel shaft, an aluminum damper tube and 25 mm pistons. The kit also features the Öhlins NIX technology with rebound damping in one leg and compression damping in the other leg. This maximizes the damping that is available within the confied diameter of the fork leg. Due to the mounting requirements of the FLH/FLT fork legs the FKC 101 kit has no external adjusters. The kit is easy to install in the originally equipped fork legs. Optional spring rates are available for individual rider weights, preferences and motorcycle use. It´s never been easier to improve the comfort this much.
The compression and rebound cartridges are largely identical but work in opposite ways. The cylinder tubes and the main pistons are positioned in opposite directions in the compression and rebound cartridges to achieve rebound damping force in one leg and compression in the other. When you are riding your bike and the front fork moves, the fluid inside the fork leg is forced to flow through the compression and rebound pistons. At a compression movement the fluid is forced through the compression shim stack and the bleed valve and at the same time through the rebound check valve. At a rebound movement, the fluid is forced through the rebound shim stack and the bleed valve and through the compression check valve. The fluid displaced during these processes is directed into or out of the cylinder tubes through the holes.