Recent Posts

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Yamaha / Re: YZ250K Piston differences
« Last post by skypig on March 22, 2026, 09:37:08 pm »
The cutouts on the intake side of the skirt are for port timing aren’t they?
The YZ80D had an extra one above the two on the C model.

The RZ500 has different cutouts on the front pistons compared to the rear. It’s a bizarre engine with different induction F and R (case v piston port)
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Yamaha / Re: YZ250K Piston differences
« Last post by PeterC on March 22, 2026, 05:59:47 pm »
I suggest a search of the Wiseco pistons. Often later pistons, forged have weight reducing citouts around the wrist pin area, probably to reduce weight and make the exoansion rate uniform. It may be some are cast and some forged
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Suzuki / Re: 99 RMX250 parts...
« Last post by Boyracer on March 22, 2026, 12:14:38 am »
Those headlights date back to the 84 DR600, get a Polisport or ebay after market https://www.ebay.com.au/itm/297917765201
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Yamaha / YZ250K Piston differences
« Last post by Boyracer on March 22, 2026, 12:05:38 am »
So I got this K and bought a barrel off ebay and a piston from the US, just wondering why some 250 pistons have cut outs and some dont, it looks like J to T are the same pistons?
Thanks for any help.
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For Sale / Re: 1978 KX250A4 for sale
« Last post by skypig on March 04, 2026, 10:15:39 am »
https://www.bikesales.com.au/bikes/details/1978-kawasaki-kx250/SSE-AD-20126755/

Bike looks great - good luck
(I’ve tried to post it to a Historic Race bike page I read - awaiting approval.)
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For Sale / Re: 1978 KX250A4 for sale
« Last post by TonkaF1 on March 03, 2026, 11:48:35 am »
Yes, thanks for that. I have posted it on FB and on bikesales.com. Hopefully something will come out of it. Cheers
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For Sale / Re: 1978 KX250A4 for sale
« Last post by skypig on February 28, 2026, 10:54:27 am »
Good luck.
The forum isn’t what it used to be. Not sure if you are on FB, but if it was me, I’d advertise it on “Market Place” as well.
I’d love to see a pic - but I’m not in the market for that bike.
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For Sale / 1978 KX250A4 for sale
« Last post by TonkaF1 on February 26, 2026, 02:29:32 pm »
Hi there. I am technologically challenged, so I haven't been able to attach any photos as yet.
I am selling my 250 A4. It has been restored and never ridden or raced. It is in good condition, but has been on display in the shed for a few years now. There are a few signs of age, but overall it is in great condition and a good example of a magic motorcycle. I am open to discussion and questions and more than happy to forward on photos to anyone that is interested. I'm asking for $14000 for the bike.
Cheers
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Yamaha / Re: YAMAHA SWAPS
« Last post by Dungar Pilot on February 09, 2026, 08:58:12 pm »
Hi Everyone,

Just updating this as the front wheel and brakeplates have gone on to greener pastures.

Thanks for looking
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Wanted / Re: Wanted 1976 Rm 250A Cylinder
« Last post by cwanedwiver on February 04, 2026, 08:44:18 pm »
Pmd you dodgee
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