Shimano Chronarch G The Chronarch G comes fitted with Shimano’s X-Ship and Micromodule gearing to create a more efficient gear train. The ultimate in casting control and accuracy is delivered via the SVS Infinity Braking System that easily allows for fine tuning using the external dial and internal brake weights. It is also fitted with a specially plated pinion gear, combined with a breakwater wall and drainage port to provide superior protection against corrosion.