Keep service hardware and the tool used on it as separate decisions. For the 1985 Honda CB125S, the listed 16 mm lock nut is a replacement part; the clutch-center removal tools are separate purchases with their own drive and working dimensions.
Show off your VintageCB750 pride with this VintageCB750 Logo Sew-On Patch, featuring metallic red thread. Looks great sewn onto a riding jacket, hat, or...
Remove your clutch center nut without damage with this Clutch Center Nut Removal Tool, the perfect tool for easier removal and fitting without damaging...
Remove clutch center nuts on different bikes with this Premium Clutch Center Nut Removal Tool, the perfect tool for easier removal and fitting without...
Restore your seat lock with this Seat Lock with Keys, replacing OEM #77230-399-007 / #77230-107-711.This seat lock works perfectly for the bikes listed; the...
Pay homage to Honda's groundbreaking inline-four with the 750 Four Engine T-Shirt in Extra Large. A black 100% cotton tee featuring a beautifully rendered...
Add a Blue Honda Racing Hat to your gear collection. Velcro adjustable back.Key Features• Blue Honda Racing Hat• Velcro adjustable backPart Number: 61-1133
Proudly display your place in the CB750 community with the Established 2010 T-Shirt in X-Large. A black 100% cotton tee featuring the "Established 2010...
Top off your kit with this Honda Logo with HRC Emblem Trucker Hat. High-quality hat with beautifully stitched Honda logo. Snap-on adjustable back.Key Features•...
Add a White Honda Logo Hat to your gear collection. Velcro adjustable back.Key Features• White Honda Logo Hat• Velcro adjustable backPart Number: 61-1142
Celebrate the CB750 community in this Established 2010 T-Shirt (Large). A black 100% cotton tee featuring the "Established 2010 VintageCB750 Logo" on the front,...
Represent the CB750 scene in this Established 2010 T-Shirt (XX-Large). A roomy, soft 100% cotton tee in black with the "Established 2010 VintageCB750 Logo"...
Top off your kit with this Honda 93 Red Hat. High-quality hat with beautifully stitched logos.Key Features• Honda 93 Red Hat• Beautifully stitched logosPart...
Honor the CB750 community in everyday comfort with the Established 2010 T-Shirt in Medium. A black 100% cotton tee carrying the "Established 2010 VintageCB750...
Commemorate a decade-plus of CB750 community with the Established 2010 T-Shirt in Small. This black 100% cotton tee carries the "Established 2010 VintageCB750 Logo"...
Service your bike with this Clymer Service Manual. Clymer motorcycle repair manuals are written specifically for the do-it-yourself enthusiast. From basic maintenance to troubleshooting...
Identify the lock nut location and reference before choosing hardware. Then compare any required service tool with the existing assembly and your available drive equipment instead of treating nominal sizes as interchangeable.
This lock nut is sold individually and described as a 16 mm genuine Honda part. Its broad application covers clutch and oil-filter rotor uses on different motorcycles. Establish which location applies to your engine before using the reference to complete your parts order.
Tool dimensions describe another component
The linked standard tool has a 24 mm inside diameter and uses a 3/8-inch driver. The linked premium tool has 20 mm and 24 mm ends for a 1/2-inch drive extension. Compare tool engagement with the fitted assembly; the nut’s 16 mm description is not the tool drive size.
Questions before ordering
How do I plan hardware for a clutch assembly that has been replaced?
Identify the installed assembly and obtain its parts information before using the motorcycle year to select the nut. Confirm the nut reference and any accompanying washers or locking components individually; the offered nut is sold each.
How do the two removal-tool descriptions differ?
The linked standard tool uses a 3/8-inch driver and has a 24 mm inside diameter. The linked premium version provides 20 mm and 24 mm ends for a 1/2-inch drive extension. Choose the engagement needed for the fitted assembly and the drive equipment available.
Can I use the manual listed in this category for 1985?
The Clymer product application lists CB125S coverage through 1978. That does not establish 1985 coverage. Choose service information that explicitly covers your motorcycle and engine before relying on its specifications or repair procedures.
Not sure which part you need?
Send your model and year, plus photos of your existing part and any changes to the original setup.