The Norton Racing Adjustable Rearset Riser Kit allows you to use the OEM rearsets for the Kawasaki Ninja 400 or Z400 and raise them up and move them back for a more aggressive riding position and increased ground clearance. These riser plates are designed by us for aggressive riding and racing and have a larger change from the OEM position than some other options on the market. These riser plates are the result of extensive testing and racing with many different rearsets available on the market. We have narrowed the adjustment range down to a few positions that offer optimal ergonomics for a fraction of the cost of high end aftermarket rearsets. Adjustment range is similar to Evol Technology Race Version and Sato Racing Race Concept Rearsets. Simply bolt these adjustment plates to the OEM mounting locations, and then attach your OEM rearsets. Adjustment options are (measured from OEM location): 46mm up and 42mm back, 46mm up and 52mm back, 56mm up and 52mm back, These sturdy risers are CNC laser cut from 1/4? thick steel to withstand the abuse of track use and racing. They are laser engraved with the Norton Racing logo and include all stainless steel mounting hardware. This kit includes a longer stainless steel shift rod that will allow you to use standard shift pattern or reversed (GP) shift pattern.