The majority of their sales comes from the 350cc models and the demand for the 500cc models started to decline in the Indian markets especially after the introduction of the 650 twins. It is to be discontinued in India from March 31 since the Bharat Stage VI emission norms will make them unviable. The company will upgrade its line up of 350cc motorcycles instead for Indian markets and promote its 650cc motorcycles as its primary export drivers. Swiss motorcycle tuner and Royal Enfield distributor Fritz W. Egli made a custom Bullet using Egli's central tube frame constructed from nickel-plated chromium-molybdenum steel, and a longer stroke crankshaft (105 mm) engine with special main bearings, dry clutch, timing belt primary drive, and 36 mm Keihin flat-slide carburettors. Other custom versions of the Bullet are the Musket, made in Ohio, and the Australian designed Carberry.