The Y27Ls is a version of the Y25 standard freight wagon bogie and is widely used by railway operators. It’s distinguished by a simple design and its high reliability. Unlike the Y25 bogie, it doesn’t have a head beam, making it shorter. However, the wheels can be braked on one side only. Composite brake blocks have been fitted which allow the bogie to be used with fully loaded wagons at a maximum speed of 100 km/h.