Same spring rates are used with the Factory Connection linkage that would be used with the OEM linkage. The rear of the motorcycle is not raised or shortened. A Pull Rod only is either shorter or longer which raises or lowers the rear of the motorcycle thus changing chassis layout. The Factory Connection linkage can be used with OEM shock settings or revalved settings. Shock compliance is much improved deep in the stroke. The rear of the bike pushing to the front is greatly reduced. The rear wheel feels more connected to the ground and traction is better.