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1985 Honda CB450SC Nighthawk Front Sprocket Order Decisions

Count the installed front sprocket before choosing the listed 17-tooth replacement for your 1985 CB450SC Nighthawk. Then assess the chain, rear teeth and retaining plate. Those observations determine whether the order is a matching replacement, a gearing change or renewal of worn retention hardware.

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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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1985 Honda CB450SC Nighthawk · Sprockets Buying guide

Establish the present gearing and retention condition

The steel sprocket is sold individually with 17 teeth. The separate lock-plate set contains one 23811-292-000 plate and two 92101-06016-0A bolts for one front sprocket. Compare the chain pitch, spline, offset and retaining method with the fitted assembly before choosing either item.

Parts to consider

Honda CB Steel Front Sprocket ~ 17 Tooth Individual 17-tooth steel front sprocketMatch the 17-tooth count with the existing gearing or the intended change. The listing calls for an installed-sprocket and chain-length comparison, not a year-only tooth-count assumption.View part Honda CB Front Sprocket Lock Plate Set ~ Replaces 23811-292-000 Plate and two bolts for front retentionThe package supplies one plate replacing 23811-292-000 and two bolts replacing 92101-06016-0A. Check the fitted retainer and renew it if damaged or unable to secure the sprocket.View part

Consider the rear gearing before choosing 17 teeth

A 17-tooth front sprocket gives lower engine rpm and less mechanical leverage than a smaller front sprocket, but the actual change depends on both current tooth counts. Record the front and rear counts first. Verify the required chain dimensions and length before using that comparison to finalize a gearing change.

Include worn drive and retaining pieces in the assessment

Hooked rear teeth, tight chain links or excessive chain stretch can wear a new front sprocket quickly. Renew worn drive components together. A bent or cracked plate, worn bolt holes or insecure locking also warrants replacement; use the Honda requirements for final slack, alignment and retention.

Sprockets purchase questions

Will choosing 17 teeth preserve the gearing already on my motorcycle?

Only if it matches the current front tooth count and the rest of the drive remains suitable. A change from a smaller front sprocket lowers rpm and reduces mechanical leverage; assess it using both current sprocket counts and the chain requirements.

What wear findings should expand the order beyond a new front sprocket?

Include worn drive components when the rear sprocket has hooked teeth, the chain has tight links or excessive stretch, or the drive set otherwise needs renewal. Those conditions can shorten the new sprocket’s life; arrange replacement and adjustment to Honda specifications.

When should the retaining plate set go on the parts list?

Add it when the existing plate is bent, cracked, has worn bolt holes or no longer locks securely. The replacement set contains one 23811-292-000 plate and two 92101-06016-0A bolts, enough for the listed one-front-sprocket retaining arrangement.

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