Carburettor Diaphragm Membrane For Yamaha XS250 Mikuni BS34CV MK1 Carb | Single

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Description

This is a single carburettor diaphragm membrane for the Mikuni BS34CV MK1 carburettor, which fits the Yamaha XS250 and similar bikes.
If your throttle response is sluggish or the bike won't idle properly, a torn or stretched diaphragm is often the issue.

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This is a direct replacement for that rubber part inside the carb slide.

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It's unbranded but built to OEM specs, and it's a replacement part—not an upgrade.

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Fits 4-stroke engines, and it's also compatible with dual sport, off-road, street motorcycles, and even scooters thanks to universal fitment.
It's a performance part in the sense that it keeps your carb working right.

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Manufacturer part number is not specified, so just match it to your carb model.

Installation is a bit delicate—you'll need to open the carb top, carefully remove the old diaphragm, and fit this new one.
It's a cheap fix that saves you from buying a whole new carburettor.
If your XS250 is running poorly, this is likely the culprit.

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Quick and affordable repair.

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