The 1983 CB650SC steering selection pairs a tapered-bearing conversion with separately listed stem hardware. Identify the steering assembly fitted to the motorcycle, then compare the bearing kit, nut and washer required for the work. The nut does not include its matching washer.
Upgrade your steering bearings with this Steering Bearing Kit. Tapered roller steering bearing conversion kit, superior to OEM quality with 10X the contact area...
Upgrade your steering bearings with this Steering Bearing Kit. Tapered roller steering bearing conversion kit, superior to OEM quality with 10X the contact area...
1979 Honda CB650 Motorcycle Parts1979 Honda CB750F Motorcycle Parts1979 Honda CB750K Motorcycle Parts1979 Honda CB750L Motorcycle Parts1980 Honda CB650 Motorcycle Parts1980 Honda CB650C Custom Motorcycle Parts1980 Honda CB750C Motorcycle Parts1980 Honda CB750F Motorcycle Parts1980 Honda CB750K Motorcycle Parts1980 Honda CB900C Motorcycle Parts1981 Honda CB650 Motorcycle Parts1981 Honda CB650C Custom Motorcycle Parts1981 Honda CB750C Motorcycle Parts1981 Honda CB750F Motorcycle Parts1981 Honda CB750K Motorcycle Parts1981 Honda CB900C Motorcycle Parts1981 Honda CB900F Motorcycle Parts1982 Honda CB650 Motorcycle Parts1982 Honda CB650SC Nighthawk Motorcycle Parts1982 Honda CB750C Motorcycle Parts1982 Honda CB750F Motorcycle Parts1982 Honda CB750K Motorcycle Parts1982 Honda CB900C Motorcycle Parts1982 Honda CB900F Motorcycle Parts1983 Honda CB1000C Motorcycle Parts1983 Honda CB1100F Motorcycle Parts1983 Honda CB550SC Nighthawk Motorcycle Parts1983 Honda CB650SC Nighthawk Motorcycle Parts1984 Honda CB650SC Nighthawk Motorcycle Parts1984 Honda CB700SC Motorcycle Parts1985 Honda CB650SC Nighthawk Motorcycle Parts1985 Honda CB700SC Motorcycle Parts1986 Honda CB700SC Motorcycle PartsHonda CB Steering Bearings, Hardware & DampersHonda CB Suspension & Wheel PartsHonda CB1000 Motorcycle Parts by Model & YearHonda CB550 Motorcycle Parts by Model & YearHonda CB550SC Nighthawk Motorcycle Parts (1983–1984)Honda CB650 Motorcycle Parts (1979–1982)Honda CB650 Motorcycle Parts by Model & YearHonda CB650C Custom Motorcycle Parts (1980–1981)Honda CB650SC Nighthawk Motorcycle Parts (1982–1985)Honda CB700SC Nighthawk Motorcycle Parts (1984–1986)Honda CB750 DOHC Parts (1979–1982)Honda CB750 Motorcycle Parts by Model & YearHonda CB750C Custom Motorcycle Parts (1980–1982)Honda CB750F Motorcycle Parts (1975–1982)Honda CB750K Motorcycle Parts (1969–1982)Honda CB900 Motorcycle Parts by Model & YearHonda CB900C Custom Motorcycle Parts (1980–1982)Honda CB900F Supersport Motorcycle Parts (1981–1982)Series 3: CB700-750SC (82-86)Series 4: CB900-1100 (80-83)Series 5: CB650 (79-82)Series 6: CB500-CB550 (71-78)
Complete your steering assembly with this OEM-spec Steering Stem Washer, engineered for secure and precise fitment. A vital component when servicing or rebuilding your...
1979 Honda CB650 Motorcycle Parts1979 Honda CB750F Motorcycle Parts1979 Honda CB750K Motorcycle Parts1979 Honda CB750L Motorcycle Parts1980 Honda CB650 Motorcycle Parts1980 Honda CB650C Custom Motorcycle Parts1980 Honda CB750C Motorcycle Parts1980 Honda CB750F Motorcycle Parts1980 Honda CB750K Motorcycle Parts1980 Honda CB900C Motorcycle Parts1981 Honda CB650 Motorcycle Parts1981 Honda CB650C Custom Motorcycle Parts1981 Honda CB750C Motorcycle Parts1981 Honda CB750F Motorcycle Parts1981 Honda CB750K Motorcycle Parts1981 Honda CB900C Motorcycle Parts1981 Honda CB900F Motorcycle Parts1982 Honda CB650 Motorcycle Parts1982 Honda CB650SC Nighthawk Motorcycle Parts1982 Honda CB750C Motorcycle Parts1982 Honda CB750F Motorcycle Parts1982 Honda CB750K Motorcycle Parts1982 Honda CB900C Motorcycle Parts1982 Honda CB900F Motorcycle Parts1983 Honda CB1000C Motorcycle Parts1983 Honda CB1100F Motorcycle Parts1983 Honda CB550SC Nighthawk Motorcycle Parts1983 Honda CB650SC Nighthawk Motorcycle Parts1984 Honda CB650SC Nighthawk Motorcycle Parts1984 Honda CB700SC Motorcycle Parts1985 Honda CB650SC Nighthawk Motorcycle Parts1985 Honda CB700SC Motorcycle Parts1986 Honda CB700SC Motorcycle PartsHonda CB Steering Bearings, Hardware & DampersHonda CB Suspension & Wheel PartsHonda CB1000 Motorcycle Parts by Model & YearHonda CB550 Motorcycle Parts by Model & YearHonda CB550SC Nighthawk Motorcycle Parts (1983–1984)Honda CB650 Motorcycle Parts (1979–1982)Honda CB650 Motorcycle Parts by Model & YearHonda CB650C Custom Motorcycle Parts (1980–1981)Honda CB650SC Nighthawk Motorcycle Parts (1982–1985)Honda CB700SC Nighthawk Motorcycle Parts (1984–1986)Honda CB750 DOHC Parts (1979–1982)Honda CB750 Motorcycle Parts by Model & YearHonda CB750C Custom Motorcycle Parts (1980–1982)Honda CB750F Motorcycle Parts (1975–1982)Honda CB750K Motorcycle Parts (1969–1982)Honda CB900 Motorcycle Parts by Model & YearHonda CB900C Custom Motorcycle Parts (1980–1982)Honda CB900F Supersport Motorcycle Parts (1981–1982)Series 3: CB700-750SC (82-86)Series 4: CB900-1100 (80-83)Series 5: CB650 (79-82)Series 6: CB500-CB550 (71-78)
Ensure your front end stays tight and aligned with this high-quality Steering Stem Nut. Designed to match the factory OEM specifications, this nut is...
The conversion kit includes upper and lower tapered bearing races. The stem nut and washer have separate references and are sold individually, so inspect the existing hardware before adding them.
The Japanese-made kit is described as a tapered-roller steering-bearing conversion with upper and lower races. Compare its application with the installed front end and follow the appropriate fitting and adjustment guidance. Do not substitute an assumed bearing preload or installation method.
Nut and washer are separate purchases
The stem nut replaces reference 90304-425-000. Its matching washer replaces 90503-425-000 and is separately sold. Inspect both pieces before ordering; a bearing replacement does not automatically require replacing sound external hardware.
Steering Bearings & Hardware questions
Does tightening the upper stem nut set the bearing adjustment?
The stem-nut guidance calls for setting bearing preload by the correct service procedure first, then fitting the correct washer and tightening the upper nut without disturbing that adjustment. Check for smooth steering with no notchiness, binding or play afterward; extra top-nut tightening is not a substitute for diagnosis.
Can an ordinary washer substitute if its hole fits the stem?
The specified washer’s thickness and seating surface affect the upper hardware’s clamping. Compare the original arrangement and reference 90503-425-000 rather than choosing by hole diameter alone. The matching nut and washer are separately supplied, so inspect both during steering service.
Can I rely on the model year after a front-end swap?
A changed steering stem or front end needs its own fitment check. Identify the actual bearings, stem and frame interfaces before selecting the conversion or hardware.
Not sure which part you need?
Send your model and year, plus photos of your existing part and any changes to the original setup.