Looking good [8D]

what brand and size are those white walls?
been considering doing the same to my 68.

 

the tires are avon wide white walls. 16 rear size MT90B16, 21 front size MH90-56H

 

that looks awesome, what year is your frame, i have the same swingarm, i was told the bike was a 79 but the motor case numbers say the motor is an 81....... but most of the 81 bikes i have seen have the square swing arm so i am not sure???????????????

 

the bike and frame are 75,the swing arm is for drum brake, all drum brake swing arms are round, disc are square. Although you can put disc on a round swing arm, just have to be creative with spacing and brackets. i had a disc on mine then changed it to drum, i like the openess of the wheel with drum. But the year of the swing arm is 72 down to what ever year was the first swing arm framewas, ( dont remember what year off hand)