Grand Cru Hand-Made Porteur Style Chaincase
Porteur style chaincases are based on the designs used by constructeur-built porteur and city bikes, perfect for couriers, city bikes, and restoration. They can be polished, painted, or left as is.
Our chaincases are produced in small runs, beautifully hand crafted in unpolished aluminum. The aluminum is cut, welded, and the weld is filed smooth entirely by one craftsman in a small local shop here in Annapolis.
The 110mm hole fits many modern cranks where the spider merges with the crank arm (as on the modern Sugino cranks as well as older cranks). These are not compatible with a front derailleur. 48t maximum chainring size.
Hardware is included.