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1986 Honda CB450SC Nighthawk 17-Tooth Drive & Retainer Checks

Treat a front-drive purchase for the 1986 CB450SC Nighthawk as a comparison with the assembly already fitted. Count the old sprocket, inspect the chain and rear teeth, then assess the lock plate. The offered 17-tooth sprocket and separate plate set let you address the identified parts without assuming factory gearing from the year.

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Honda CB750 CB650 CB550 front sprocket lock plate set 23811-292-000

Honda CB Front Sprocket Lock Plate Set ~ Replaces 23811-292-000

$5.95 USD
49-0782
Replace your front sprocket lock plate with this Front Sprocket Lock Plate with 2 lock plate bolts. Always good to replace these when installing...
Honda CB750 CB450 CB400 CB350 CL450K0 steel front sprocket 17 tooth

Honda CB Steel Front Sprocket ~ 17 Tooth

$23.45 USD
99-4817
Front sprocket designed for a range of Honda models. A critical drivetrain component, it transfers power from the engine to the chain, making proper...
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1986 Honda CB450SC Nighthawk · Sprockets Buying guide

Use drive condition and gearing to define the purchase

The 17-tooth steel sprocket is sold singly. Its fit checks include chain pitch, spline shape, offset and retaining method. The plate package supplies one 23811-292-000 plate and two 92101-06016-0A bolts. Chain length and the condition of the matched drive components belong in the comparison before the order is placed.

Parts to consider

Honda CB Steel Front Sprocket ~ 17 Tooth One 17-tooth steel replacementThe sprocket lists the 1986 CB450SC application, but tooth count must be compared with the installed drive. Check chain length and the full fit requirements before choosing it.View part Honda CB Front Sprocket Lock Plate Set ~ Replaces 23811-292-000 One retaining plate with two boltsThe set replaces plate 23811-292-000 and includes two 92101-06016-0A bolts for one front sprocket. Renew damaged retention hardware while the drive is being assessed.View part

Compare both sprockets before proposing a gearing change

Moving from a smaller front sprocket to 17 teeth generally lowers engine rpm at a given road speed and reduces mechanical leverage. The actual change depends on the existing front and rear tooth counts. Keep that comparison alongside chain-length, pitch, spline and offset checks rather than treating 17 teeth as a universal original specification.

Avoid putting a fresh sprocket into a worn matched drive

Hooked rear teeth, tight links and excessive chain stretch can quickly wear a replacement front sprocket. Renew worn components together and use the Honda requirements for slack and alignment. Include the retaining plate when it is bent, cracked, worn around its bolt holes or unable to lock securely.

Sprockets purchase questions

What should I record before deciding whether 17 teeth suits my intended gearing?

Record both existing sprocket tooth counts and check chain length and fit. Compared with a smaller front sprocket, 17 teeth generally lowers rpm and reduces leverage. The change depends on the current front-and-rear combination, so establish that combination before choosing.

Which observations argue against ordering only the front sprocket?

Hooked rear teeth, tight chain links or excessive chain stretch indicate worn matched-drive components that can shorten the new sprocket’s life. Assess them together and renew worn parts as required. Final chain slack and alignment should follow the Honda specifications.

What should I order when the retaining plate’s bolt holes are worn?

Renew the damaged retaining plate arrangement rather than relying on worn holes or insecure locking. The listed package supplies one 23811-292-000 plate with two 92101-06016-0A bolts for one front sprocket. Confirm the original retaining method and follow the Honda installation requirements.

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