OEM standard bore 101mm cylinder P/N 5843000510023 removed from a 2004 626SMC with 10,000 miles. This cylinder came from a fully functional engine that did not burn oil. It is in very nice condition with the factory hone marks still clearly visible on the cylinder walls. The piston is also included and is also in good usable condition. The photos include 4 shots from top and bottom taken at 90 degree intervals. This cylinder will fit the bikes listed below. Please check fitment prior to purchase.