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1980 Honda CB650 Rear Chain Adjustment Parts

Start a rear-wheel hardware order for your 1980 CB650 by checking both adjusters and their fasteners. The listed set replaces 40543-425-000 and contains two adjusters, two adjusting bolts and two nuts. Compare the retained axle arrangement before deciding which additional components need attention.

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Honda CB750 CB650 drive chain adjuster set 40543-425-000

1979-83 Honda CB750 / CB650 Drive Chain Adjuster Set ~ Replaces 40543-425-000

$42.95 USD
73-0101
Replace your DOHC CB chain adjusters with this Complete Drive Chain Adjuster Set. Includes 2 chain adjusters, 2 chain adjusting bolts, and 2 adjuster...
Honda CB650 CB550 CB500 CB400 CB350 primary chain 23131-426-003

Honda CB Primary Chain ~ Replaces 23131-426-003

$179.95 USD
73-0162
Replace your CB primary chain with this OEM-Quality Primary Chain, 50 link, replacing OEM #23131-426-003 / #23131-323-003.Key Features• Primary chain, OEM quality• 50 link•...
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1980 Honda CB650 · Rear Chain Adjustment Parts Buying guide

Check the adjuster hardware on both sides

The six-piece package covers two adjuster positions. Damaged threads, missing fasteners and altered swingarm fittings call for different checks, so compare the actual assembly with the listed parts rather than treating this as every item needed for axle service.

Parts to consider

1979-83 Honda CB750 / CB650 Drive Chain Adjuster Set ~ Replaces 40543-425-000 Drive-chain adjuster setTwo adjusters, two adjusting bolts and two nuts are supplied.View part

Count the complete adjuster package

Two adjusters, two adjusting bolts and two nuts are listed in the set. Compare that contents list with the old hardware before purchasing additional pieces. Inspect the retained stopper surfaces and other axle fittings separately; they are not named among the supplied components.

Do not confuse the chain locations

The 50-link primary chain is an internal engine component. For rear-wheel work, identify the fitted external drive chain and its required specification separately. Use the Honda procedure to check alignment and chain adjustment after replacing axle hardware.

Ordering questions

Can I rely only on swingarm marks to align the rear wheel?

No. Use both adjusters evenly, verify rear-wheel alignment with an accurate method and set chain slack to the Honda specification. Worn or mismatched index marks are not enough to establish alignment.

What should I inspect and recheck during chain adjustment?

Check the drive chain, both sprockets, axle, wheel bearings and adjuster seating. Tighten the axle and adjuster hardware using the service-manual procedure, then recheck chain slack after the axle is secured.

Can the listed primary chain replace the wheel-drive chain?

No. It serves the internal engine drive, so it cannot replace the external chain between the front and rear sprockets. Confirm the rear chain specification separately before ordering.

Not sure which part you need?

Send your model and year, plus photos of your existing part and any changes to the original setup.

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