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AOSS, 1st, 2nd, 3rd Gen SSS YZ250

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Some observations Ive come across. May help some cross referencing and ID. 

06-16 manuals show the same optional part numbers for springs.

There appears to be 3 generations of SSS and a twist in 2015.

05  --- Commonly called "AOSS" and not considered "SSS" by most. Commonly identified by the silver outer top cap and longer outer fork tube step.

06-07 --- The beloved 1st Gen SSS. Identified by its gold outer cap on top and shorter outer fork tube step than the 05.

08-14 ---- What i would consider 2nd Gen SSS. A somewhat significant redesign of the fork leg and guards. Difficult to find a picture to demonstrate, but the guard mounting, caliper mounting, lower leg, spring rate and most all internal part numbers are different than 06-07. 

15+ --- 3rd gen SSS Identified by their triple hump outer leg shape. 

Plot twist: 2015 pictures have some interesting outer legs with that appear to be different than 2016+, however they are listed as the same part number. Perhaps they are early models or pre production, but theyre out there.

 

2017-06-19 21.06.43.png

2017-06-19 21.37.22.png

2017-06-19 21.21.15.png

2017-06-19 21.28.13.png

Leg Right.JPG

Leg Left.JPG

Guards.JPG

Edited by SellYour4Stroke
Grammar
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I have a yz250 - 15 and a yz450f-15 and the forks look like the one on picture nr 2, plot twist. Never seen these forks with the three humps. Maybe it's because I live in Europe?

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Anyone know what parts are interchangeable between the 1st and 2nd gen SSS?

I bought OEM springs never used from an 06, and want to put them in my 11.

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2 hours ago, EEE299 said:

Anyone know what parts are interchangeable between the 1st and 2nd gen SSS?

I bought OEM springs never used from an 06, and want to put them in my 11.

Race Tech lists the same replacement spring for both years and the manual tuning sections show the same spring optional part numbers, so they are the same. Would be good to have that info as well.  I may add it. And shrink those pictures.

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Great, thank you!

 I figured they were the same, however since stock changed from .43 to .44 they obviously have different part numbers. That was why I wasn't sure, even after checking aftermarket numbers which show them the same too. I didn't even think about looking at the same alternate rates, good thinking!

Edited by EEE299

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21 hours ago, KDXGarage said:

Spring length is different in 2005. 

Pretty different forks afaik. Not necessarily bad, but not as good as 06+.

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On 7/2/2017 at 3:40 PM, GlennRay said:

Not to muddy the waters, but they made YZ-250s as far back as 1975.

What has that got to do with the title of this thread, which refers to 2005 and newer??

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