Posts
160
Joined
10/14/2013
Location
Southwick, MA, USA
I recently finished up this YZ125B. The build time was around a year. My goal was to use as many period correct hop up parts as I could find. I also used a ton of hard to find NOS Yamaha parts. The front forks and front wheel hub are off of a 1974 YZ250A. It has a full Noguchi kit. I installed Inter-Am handlebars, Goki air caps, Petty fender, Fox Shox, and a Red Line swingarm. Nearly all of the nuts, bolts and washers are correct NOS pieces. For tires I tracked down NOS Yokohama Super Diggers. I’m happy with how it turned out. Thanks for taking a look. 
Looked even better in person!!!
😎
Beautiful job. My riding buddy had one of these (silver tank -- 1974?) and it was fun to ride.
As a side note, I had those Fox shocks on my 76 Honda. They worked well and added about an inch of travel (and looked really cool). Unfortunately, I managed to blow them several times. As it turned out, the extra inch of travel was a result of reducing the area of piston contact with the shock body at full extension. After a while of rocking back and forth, the piston/ring would fail. Maybe I could have/should have maintained them better too.
Back in the day 1975, was the YZ competitive?
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In stock form the twin shock YZ125 wasn’t too competitive. My bike is an example of the mods that would be needed to make the bike competitive. I swapped out the Preston Petty front fender for a stock one. I think it looks better.
Your bike looks amazing, great job. I like the black and yellow look as well. Converted by 1974 A look like a 1975 B.
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