SPROCKET, 26T #50 chain. 1.25"ID x 5.50"OD x 2.00" wide at hub. 1/4 keyway. C / C II COMBINE SPROCKET ASY. (26T) There might be a serial number break to check out before ordering.
SPROCKET, 13T #2050.
1.25"ID x 5.25"OD x 1.50" wide at hub.
Tapped for set screw.
Cross drilled for pin/bolt .25"ID.
New old stock OEM 71130647.
E COMBINE / E ENGINE crank, L.H. (13 tooth)