"dogbone" is the deflection lever. The picture you show is deflection plate. The K bike was used in some factory races 10 years ago in the EU and they used the 31mm lift plate, there are others. (lifted the butt of the bike 31mm). Made steering much quicker. Still for sale. Easy to install, when you do the job, clean and grease the "dog bone" and other needle bearings, it is an every two year maintenance item that is not listed. If you live in Europe order from the German supplier, if in the states I have three sets left much cheaper.