Engine Rebuild Kit

Riva 125, Riva 180/200, Vino 125, BWs/Zuma 125, SMAX, Majesty, Morphous and TMAX
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Redscoot98
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Engine Rebuild Kit

Post by Redscoot98 »

Does anybody know where I can buy and engine rebuild kit for 98 Yamaha Riva 125cc? I'm not having any luck online.

Thanks
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flybd5_juan
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Re: Engine Rebuild Kit

Post by flybd5_juan »

"Rebuild kit" is too vague. Do you mean something like this top end kit? https://www.ebay.com/itm/Athena-Top-End ... 3756214208
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Redscoot98
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Re: Engine Rebuild Kit

Post by Redscoot98 »

I won't know until i pull the engine out. It's completely lost compression (testing at 30 psi). WIll probably want to replace piston and rings.
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flybd5_juan
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Re: Engine Rebuild Kit

Post by flybd5_juan »

There are no "rebuild kits" for something like this. You may likely have to find a piston and rings, or more.
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Redscoot98
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Re: Engine Rebuild Kit

Post by Redscoot98 »

I've looked everywhere no luck finding any pistons/rings. Sucks that this engine is not very popular
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flybd5_juan
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Re: Engine Rebuild Kit

Post by flybd5_juan »

Remove the piston, carefully measure dimensions for the piston, rings and wrist pin and go find yourself a Chinese-made piston kit with rings and pin. It's likely just a garden-variety 54mm piston for a slightly larger cylinder, maybe 57mm. eBay has oodles of them.
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