This is a new old stock genuine Kawasaki Output Gear 4th 21T gear.

This gear is now discontinued and virtually impossible to locate an OEM Kawasaki gear such as this. 

Part Number - 13129-1132 Output 4th 21T

1979-1980 KDX420 Kawasaki Enduro

1980-1981 KX420 Kawasaki MX

1983-1985 KX500 Kawasaki MX

Gear will be carefully parcelled and dispatched by Royal Mail Tracked 48.

As with all items I sell they are genuine and as described.

This item is the exact item in the photos.

Thanks for looking!

OB2