YAMAHA 18mm AXLE NUT KITYZ125 1986-1998YZ250 1982-1998YZ490 1983-1990 Fastens Rear Wheel2 Piece Axle Nut KitAll Hardware meets or exceeds OEM specs! Replaces Yamaha Part #90185-18009 This 2 piece Axle Nut replaces Yamaha part number 90185-18009 that came on these bikes. It is the same type of all metal locking nut. It is high quality heat treated carbon and zinc plated just like the factory used.Rust resistantAll our fasteners are made of high quality heat-treated zinc plated steel. They have been designed and tested to meet or exceed OEM specifications. We guarantee fit and function. Your complete satisfaction is our number one goal!*Compare to YAMAHA OEM part number: 90185-18009* APPLICATIONS:Yamaha YZ125, YZ250 and YZ490 SEE COMPATIBILITY CHART KIT CONTENTS: 1-nut and 1-washer Your satisfaction is GUARANTEED IF YOU ARE NOT 100% COMPLETELY SATISFIED WITH YOUR FASTENER KIT, YOU MAY RETURN IT WITHIN 30 DAYS OF PURCHASE, OR CONTACT US FOR AN EXCHANGE OR REPLACEMENT!-PAYMENT & SHIPPING-Payment is required upon checkout.FREE DOMESTIC FIRST CLASS MAIL SHIPPINGCheck out our other Axle nut kits for YAMAHA, HONDA, KAWASAKI, SUZUKI, HUSQVARNA, & KTM