VintageCB750 Supplying CB Riders Since 2010

About Us Why Us? Reviews Shipping Info Returns Contact Us
Wish Lists
0 My Cart

Your cart is currently empty.

Browse all parts
Total (USD): $0.00
View cart
Menu
Search
Wish
Cart 0
My motorcycle Choose your Honda CB model

Search parts

Searching all Honda CB parts

Example: brake pads or oil filter.

1981 Honda CB900C Custom Exhaust Seals & Fasteners

Prepare an exhaust-joint order for your 1981 CB900C Custom by counting the connections being disturbed. Each port gasket is supplied individually. The fastening package contains eight studs plus eight flange nuts, so keep those quantities distinct while inspecting the retained pipes and cylinder-head mounting points.

Close ×
Your saved bike Choose your Honda CB model

Shop By Category

Most orders ship same or next business day Fitment guarantee Listed for your exact model and year? We’ll make it right if it doesn’t fit as described. Mechanic-backed support Ask our team for help choosing the right Honda CB part.
Currently viewing Gaskets & Mounting Hardware

Honda motorcycle parts

Choose your model and year to see parts listed for your bike.

Honda CB1100 CB1000 CB900 exhaust headpipe gasket (each) 18291-254-000

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18291-254-000

$3.42 USD
17-2812
Replace one exhaust port gasket on your CB750 or big-bore DOHC CB with this Exhaust Port Gasket, 1 piece, replacing OEM #18291-254-000 / #18291-MM5-860....
Honda CB kick stand stopper rubber 95011-61000

Honda CB Kick Stand Stopper Rubber ~ Replaces 95011-61000

$2.95 USD
07-4624
Replace a worn kick stand stopper with this Kick Stand Stopper Rubber "A", a direct replacement for OEM #95011-61000. Exceptionally broad fitment across the...
Sold out
Honda CB1100 CB1000 CB900 exhaust headpipe gasket (each) 18291-MM5-860

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18291-MM5-860

$6.84 USD
18-7013
Replace one cylinder-head-to-exhaust-headpipe gasket on your big-bore Honda with this Cylinder Head to Exhaust Headpipe Gasket, 1 piece, replacing OEM #18291-MM5-860. Exceptionally broad fitment...
Honda CB900C CB900F CB750K exhaust stud and flange nut set

1979-82 Honda CB900C / CB900F / CB750K Exhaust Stud & Flange Nut Set

$34.95 USD
73-1140
Restore your classic Honda’s exhaust system with this premium Exhaust Stud Set, engineered for durability and a precise fit. This 8-piece kit includes eight...
compare

1981 Honda CB900C Custom · Exhaust Seals & Fasteners Buying guide

Count disturbed joints and damaged fasteners independently

Gaskets and fastening hardware address different parts of the exhaust joint. Inspect both before ordering, and avoid assuming a single gasket purchase or a general kit name covers the whole motorcycle.

Parts to consider

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18291-254-000 Individual headpipe gasketOne exhaust-port gasket per purchase; order the quantity required for the joints opened.View part 1979-82 Honda CB900C / CB900F / CB750K Exhaust Stud & Flange Nut Set Exhaust studs and nutsEight exhaust studs and eight matching flange nuts; keep the two component counts separate.View part

Choose the gasket quantity from the repair

The featured gasket is sold individually for the headpipe-to-cylinder-head port. Four are needed when all four ports are resealed. Remove each old crush gasket from a disturbed port before fitting its replacement, and inspect the seating surface rather than stacking a new gasket over the old one.

Assess hardware rather than replacing by guesswork

Eight studs and eight flange nuts are stated in the package contents. Inspect their mounting points before deciding the replacement scope. New fasteners cannot establish that damaged head threads or distorted flanges are serviceable, and tightening requirements must come from the appropriate instructions.

Buying questions

Can an old port gasket be left beneath the new one?

No. Remove the old crush seal from the disturbed port and inspect the seat before fitting a fresh gasket. A compressed old ring can be easy to overlook; stacking seals is not a substitute for preparing the joint properly.

Are the exhaust joint collars the same parts as the gaskets?

No. The 18233-425-000 product is one joint half-collar, with two used at each cylinder-head pipe joint. The gasket seals inside the port. Match the missing or damaged piece before ordering either product, and inspect the studs, nuts and flanges separately.

How should I decide whether the studs need replacement?

Inspect the studs, nuts and threaded mounting points using the correct service procedure. The need for a new gasket does not automatically establish that every stud should be renewed.

Not sure which part you need?

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

Ask a fitment question
Parts categories for 1981 Honda CB900C

Your cart

×