Originally Posted by FJ_Kevin
As others have mentioned, the 1980 YZ465 used a 38mm fork with single leading shoe front brake. For 1981, Yamaha upgraded the 465 with a 43mm fork with double leading shoe front brake.
Nope, 1980 had the DLS brake as well. My bike was 100% bone stock in 1982 and it had one.
This picture ran with the magazine test in--I think it was Cycle--in 1980 (duh, says so on his jersey). You can plainly see the brake.
Hell, I forgot I had this posted out on the web. That's me with my bike in '82 or '83--Gold Belt, Hi-Points, Griffin pants--and a full head of hair.
Pretty sure that was a first generation Terraflex on the back and a Vesco desert tank.