What is the size of the rear wheel axle nut for a motorcycle?
2 Answers
The size of the rear wheel axle nut for a motorcycle is 50-80 N.m. Functions of motorcycle engine oil: Mainly includes lubrication, cleaning, heat dissipation, anti-corrosion, wear resistance, and shock absorption. Motorcycle rear wheel assembly structure: Includes the rear wheel axle and two parallel swingarm tubes, with adjustment holes on the swingarm tubes for fixing the rear wheel axle. It also includes a chain adjustment device, which consists of a connecting piece inside the swingarm tube for connecting the rear wheel axle and a driving piece for moving the connecting piece along the length of the swingarm tube. The connecting piece has an axle hole for fixing the rear wheel axle, and a protective sleeve is placed between the rear wheel axle and the axle hole to support the rear wheel axle.
This varies from person to person, and the specific size depends on your motorcycle model and manufacturer. Common sizes range from 17mm to 24mm, with medium-sized bikes from Yamaha or Honda mostly using 19mm or 22mm nuts. Having worked on many bikes, I recommend checking the owner's manual or visiting a professional shop for measurement, as a wheel axle nut that's too tight or too loose can cause wheel wobble and affect riding safety. For DIY, you can use a vernier caliper to measure the outer diameter or match it at a parts store. Different materials like stainless steel or alloy nuts vary in durability, so prioritize OEM parts. Regularly checking the tightness of the nut is also key to maintenance, especially before long-distance rides—don't overlook the details.