Ohlins YZ360

88 (89?) to 98 if my memory's good.

They were used in the open class instead of the 490 air hammer. Georges Jobe: 

It’d be cool if it could be fit to a 2025 YZ250…

I've seen the newer(99 up) motor in the older bikes and the older engine(98 down) in the newer 99 up chassis so it definitely is easy to do. Just would need the whole older motor and cdi etc. 

BRC has you covered if you want 500cc...

https://brcracing.ca/yzm-500-my99-21/

The Ohlins is listed for $500

Life's short, it's only money!

Probably can’t get any parts for that, I won’t mess with it ! 

https://www.noleenj6.com/ohlins-360-kit-parts

This guy built some sort of YZ 400.
https://www.facebook.com/groups/671081149638729/?multi_permalinks=24544…

Jobe didn't ride the 360. That bike #6 was ridden by Kurt Ljungqvist. 

George Jobe did race the YZ360, but didn't finish the full season due to injury.

Wasn't it a special YZ500 he rode in 1990? Not 360.

Supposedly a YZ360...

There is so much bull shit information out there on the internet. Apparently it was a JPX kitted 500.

Jobe rode both the Ohlin 360 kitted bike, and  the JPX500 kit, from what I've gathered, over the years since then. Neither were particularly successful for him. 

It's not hard to see the difference with either kit / engine - the 360, a 250 base, the JPX, a 490 base. 

He became ( well, always was) quite the Maverick, throughout his career. 

He did what He wanted to do, before his Yamaha efforts, but especially during / after his '87 500cc World Championship, as a Privateer.

To then get a further 2 500cc World Championships, in '91 and '92. After his 'small Open Classer' tries. 

Then, onwards with his own Teams, through to a few innovations (with partners) , notably with suspension.

We lost quite a man with his death, far too early. 

I have to say, as I have done for quite a few years now, something like a 350 to 400 - preferably the 400 sizing or thereabouts, Is The Go for a bigger 2t!

Not overpowered / over torqued ( or, over stressed) , yet more than enough to compete head to head with 450 4ts, while not being a 'Dung Dung Dunger' / Arm Ripping thing a 500 can  be.

Thanks for putting that up, Both of you, I'll be following it's progress.

I've written this many times, but one of the Best Series Videos to watch  is of the '97 World 500 Championships. Oh, 96 is great too, with a ('orrible) Kiwi, Shayne King winning on his 360 / 380 KTM 2t.

Such a variety of 'Open Class Solutions' used. The 360 /380 KTM 2ts - with the transition from linked to PDS'd rear ends in there too - the big, Boomer 4ts, the Rorting 500s (and, a few privateers were on sleeved down 500s, to the 399 / 430cc capacities), and, the Screaming Factory YZFs - of a variety of capacities. Such a great  variety of sounds, and, ways of attacking the courses. I wish we could go back to such variety, and not have this "all 4 strokes, All the time" handicap class racing.