What's the rest of the part number? There will be a five figure number infront of the KV3 bit.
Actually thats not really relevent as the only part that ends KV3-771 on an MC21 forkleg is a 50p sticker.

The part number for the entire fork leg assembly is 51510-KV3-something depending on fork leg colour;
For Se/SP it's 841ZA if they're clearcoated, 681ZA if they're painted.
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