Review on 4Mm 40Mm Metric Cotter Pins by Dragan Nelson

If you ride a chain drive motorcycle, sooner or later you will have to adjust it. If you take care of your maintenance and drive a lot, you will adjust it frequently. Each time you do this, you will need to replace the axle nut cotter pin. Since cotter pins sell for about $2 each at dealerships and parts stores, this can add up to the cost of a whole box of 50 pretty quickly. So it makes sense to buy in bulk, save some money, and have what you need on hand when you need it. Also, this size (4mm x 40mm) is a direct replacement for the Kawasaki Z-1000 rear axle nut.