What was the 1st year of the YZ production Mono-shock?

tblazier
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tblazier
Edited Date/Time 1/31/2012 12:59am
I know there were Works YZ' Mono-SHocks as early as 73 but what was the 1st year that Yamaha put it on the production bike? I seem to find info that says there was a very limited run of 74's that had it but other sources point to 76 as the first year. Help
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newmann
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newmann 1/29/2012 7:44am
1/29/2012 7:44am
1975. I think they had some pretty early release dates for some of them though.

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newmann
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newmann 1/29/2012 7:51am
1/29/2012 7:51am
1975 YZ250B



1975 YZ250 and 360

motogrady
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motogrady 1/29/2012 7:55am
1/29/2012 7:55am
Late 1974 I pitted next to Mike Cleveland, at the time one of the top locals, at the annual BlueGrey.
That was the first time I ever saw one.
We talked about it, he said the only thing bad was he couldn't get any real speed out of it.
jimmie
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jimmie 1/29/2012 9:05am
1/29/2012 9:05am Edited Date/Time 1/29/2012 7:36pm
I seem to recall, early June of 1975.

My school held a motocross race, on the actual campus (Paramount High School) and one dude there had a mono-shock at that time.

We all were oohing and awing about the bike.

I suppose my memory could be a bit fuzzy, but I don't think so, I hadn't started doing recreational drugs just yet.

I was a freshman at the time and rode to a second place on my 1971 Yamaha 175 CT1C.

So by my story, Yamaha had the "mono" out by mid 1975?
bullpen58
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bullpen58 1/29/2012 9:09am
1/29/2012 9:09am
newmann wrote:
1975 YZ250B [img]https://www.yamaha-motor.com/sport/epic_mcy/500/75_yz250_600.jpg[/img] 1975 YZ250 and 360 [img]http://www.vintagecycleprints.com/backissues/motorcyclist/7411mc.jpg[/img]
1975 YZ250B



1975 YZ250 and 360

Almost hard to believe that bikes were that shitty back then. I mean, at the time, we thought they were awesome and that was just a little less than 40 years ago. Can you imagine what we will have in another 40? The 2052 YZ450F?
ATKpilot99
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ATKpilot99 1/29/2012 9:25am
1/29/2012 9:25am
bullpen58 wrote:
Almost hard to believe that bikes were that shitty back then. I mean, at the time, we thought they were awesome and that was just a...
Almost hard to believe that bikes were that shitty back then. I mean, at the time, we thought they were awesome and that was just a little less than 40 years ago. Can you imagine what we will have in another 40? The 2052 YZ450F?
They will be riding bikes made by GE.
Ozy
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Ozy 1/29/2012 9:43am
1/29/2012 9:43am
I raced a 1975 YZ125 monoshock. looked like it had a tach and speedo on the top of the forks. I'm fairly certain this was the first year of production monoshocks
newmann
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newmann 1/29/2012 10:17am
1/29/2012 10:17am
Ozy wrote:
I raced a 1975 YZ125 monoshock. looked like it had a tach and speedo on the top of the forks. I'm fairly certain this was the...
I raced a 1975 YZ125 monoshock. looked like it had a tach and speedo on the top of the forks. I'm fairly certain this was the first year of production monoshocks
That would have been the 1976 YZ125X with the nitrogen charged forks. That actually came after the 1976 YZ125C which was a early release 1976 model. It often times gets referred to as a 75 model. The 75 YZ125B was just a yellow version of the 74 A model twin shocker.
newmann
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newmann 1/29/2012 10:24am
1/29/2012 10:24am
1974 YZ125A




1975 YZ125B



1976 YZ125C



1976 YZ125X

Top End
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Top End 1/29/2012 10:28am
1/29/2012 10:28am
ATKpilot99 wrote:
They will be riding bikes made by GE.
I bought all new GE appliances a few years ago. Lets just say I will never buy another GE product again.
Charles Bronson 1/29/2012 10:33am
1/29/2012 10:33am
Man, if EVER the honey badger manifested itself as any sort of machine, this is what it would look like.

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Highsider 1/29/2012 10:57am
1/29/2012 10:57am Edited Date/Time 1/29/2012 10:58am
Charles Bronson wrote:
Man, if EVER the honey badger manifested itself as any sort of machine, this is what it would look like. [img]https://www.yamaha-motor.com/sport/epic_mcy/500/75_yz250_600.jpg[/img]
Man, if EVER the honey badger manifested itself as any sort of machine, this is what it would look like.

Make the nickname "The Honey Badger"

Oh and newmann is "winner, winner, chicken dinner"
project racer 1/29/2012 3:34pm
1/29/2012 3:34pm
The X model 125 was actually dubbed as the 76 1/2 model. The 125 C was out in mid to late 75.
EastFlorida
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EastFlorida 1/29/2012 3:40pm
1/29/2012 3:40pm
My 1977 Yz 100 looked the same as the 76 yz125C with a little different graphics on the metal tank.
googs the 2nd 1/29/2012 3:44pm
1/29/2012 3:44pm
brings back memories...Smile


this thread is far too informative.......

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Electro
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Electro 1/29/2012 5:11pm
1/29/2012 5:11pm
ATKpilot99 wrote:
They will be riding bikes made by GE.
Top End wrote:
I bought all new GE appliances a few years ago. Lets just say I will never buy another GE product again.
It is amazing that GE being as large a co. as it is, sells such low end products, I'm in the electrical field and would never use their product by choice.
backinthesaddleagain 1/29/2012 6:42pm
1/29/2012 6:42pm
I thought the 78 models with the aluminum swingarms looked wicked trick. At 78 pinetop nationals it seemed everyone racing one was busting off the chain guide, but man they looked sweet.
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observer 1/29/2012 7:32pm
1/29/2012 7:32pm
newmann wrote:
1974 YZ125A [img]http://vintagemx.com.au/wp-content/uploads/2009/02/yz125a_pic3.jpg[/img] 1975 YZ125B [img]http://vintagemx.com.au/wp-content/gallery/yamaha-yz125/1975_yz125b.jpg[/img] 1976 YZ125C [img]https://www.dirtbikerider.us/Pics4/20090623-1706205-1976-Yamaha-YZ125.jpg[/img] 1976 YZ125X [img]http://cloud.impulsestudios.ca/racer-x-content/yamaha_yz_125x_026.jpg[/img]
1974 YZ125A




1975 YZ125B



1976 YZ125C



1976 YZ125X

OMG Newman....there she is... my 74 YZ125A! (:-P
What I'd give to have pics of that bike/me back in the day.
Betor forks up, canted Bilstien shocks out back(ala Suz RMs)
Miller Mano porc head, pipe w silencer to side of cyl(from kart eng design Dave made),
Honda Elsinore seat-other goodies. She was a strong, torquey 125, but no match for the lightning fast
Hondas back then.
All "oldschoolers" reunite! :-) Too kewl.
krooner33
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krooner33 1/29/2012 9:43pm
1/29/2012 9:43pm
As far as I know the 1974 yz250b and yz360b were the first production monoshock Yamaha. But they were produced in limited numbers.
uk125250
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uk125250 1/30/2012 12:48am
1/30/2012 12:48am
Charles Bronson wrote:
Man, if EVER the honey badger manifested itself as any sort of machine, this is what it would look like. [img]https://www.yamaha-motor.com/sport/epic_mcy/500/75_yz250_600.jpg[/img]
Man, if EVER the honey badger manifested itself as any sort of machine, this is what it would look like.

It just don't care.
tmphotoart 1/31/2012 12:59am
1/31/2012 12:59am
tblazier wrote:
I know there were Works YZ' Mono-SHocks as early as 73 but what was the 1st year that Yamaha put it on the production bike? I...
I know there were Works YZ' Mono-SHocks as early as 73 but what was the 1st year that Yamaha put it on the production bike? I seem to find info that says there was a very limited run of 74's that had it but other sources point to 76 as the first year. Help
Here's Yamaha Motors office site with there company milestones . . .

http://www.yamaha-motor.com/corporate/historyTimeline.aspx

1st Mono-shock in production was in 1975.

I had the YZ100 C in 1976 . . . spent a lot of time cleaning the dual air filters.

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