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Makotosun

‘76 DT175 Piston Confusion

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‘76 DT175 Piston Confusion was created by BWMoto

Hey guys,
I’m a long time reader and wrencher, but it’s my first time posting....

I recently purchased a cheap dt175 and had hopes of making it a fun project. I tore the motor down for paint and clean up. Decided to put a fresh set of rings in while I was there...

I purchased NOS piston rings, but it turns out they aren’t even close to fitting the piston that was in the bike. Any idea what this piston is and where I can find rings for it?

Thanks for the help!
19 Apr 2020 14:10 #1

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Replied by Swoop56 on topic ‘76 DT175 Piston Confusion

That piston is an aftermarket Wiseco piston . The code 471 P2 is it's catalogue number .
I don't have a Wiseco catalogue so cant help with rings numbers .
They are numbered in imperial nominal bore size . They are readily available .
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19 Apr 2020 14:47 #2

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Replied by BWMoto on topic ‘76 DT175 Piston Confusion

Thank you so much!!!
19 Apr 2020 15:49 #3

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Replied by Swoop56 on topic ‘76 DT175 Piston Confusion


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Replied by BWMoto on topic ‘76 DT175 Piston Confusion

Thanks again Swoop!

I stumbled upon this website Wiseco Yamaha Pistons

Has a bunch of good info regarding part numbers for Wiseco Yamaha pistons.
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20 Apr 2020 18:23 #5

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