OEM honda round headlight rim for ct90 and many other bikes

OEM round headlight rim / ring thing for the ct90 as well as many, many honda bikes. including bikes in the CB, CL, CT and CM series...over 100 in fact. see the dimensions below and check the part number for your model to check fitment.

OD: 57mm
ID on the back side: 48mm
ID on the front side: 30mm

honda part # 33101-329-671

treatland