1981年11月1日 · Reducing the heat buildup is the logical cure. Three of the four Japanese giants have done just that on their ‘81 125 racers. Watercooling the 125s keeps heat and distortion low so power output...

Listing 1-10 Of 10. Find Used Yamaha Yz 1981 For Sale (with Photos). VINTAGE 1981 YAMAHA YZ 125 ***AHRMA***.

2020年5月11日 · Check out this restored by father and son 1981 Yamaha YZ125H! Leave your comments on the 1981 YZ125 and shop for parts!

2008年1月19日 · My YZ started life as a yellow craigslist special, I found the tank in the UK. It was complete bike but needed a lot of work (lots of back yard engr)

This group has been created to share information on these YZ models along with buy/sell/trade... It's getting harder to find parts and support for these vintage rides, so let's help each other out. I've expanded the group to include the 1981 model too...

2011年11月27日 · I raced a '81 YZ125 back in the day. It was a great bike, but as soon as I threw a leg over a '81 RM125X I moved up several positions.

2012年9月22日 · Dirt Bike magazine had a case/bearing failure while testing the 80, or 81 bike...it spun the crank main bearing in the case. Both are first year models, the 80 was totally different from the 79, and the 81 was the first watercooled production Yamaha dirtbike, but shared the rest of the components with the 1980 model.

2008年6月24日 · As some of you may know, '81 YZ125's were notorious for cooling fluid to leak from the steering head seals. Instead of replacing the seals and rusty bearings on a regular basis, I wanted to try something different and bypass the steering head. Has anyone whose owned this year YZ ever kept the rad...

Worlds first watercooled motocross bike. Revs to the moon and has plenty of horsepower. Consider this is the first time he is riding this motocross bike. It has a new piston in it so he cant go...

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