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1983 Honda CB1100F Slip-On Megaphones & Joint Collar

For the rear of the 1983 Honda CB1100F exhaust, this category lists M.A.C. chrome slip-on megaphones made for the factory 4-into-1 header, and a genuine Honda exhaust pipe joint collar, OEM 18233-425-000, made in Japan.

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Honda CB1100 CB1000 CB900 CB750 Honda exhaust pipe joint collar 18233-425-000

Honda CB1100 / CB1000 / CB900 / CB750 Genuine Honda Exhaust Pipe Joint Collar ~ OEM 18233-425-000

$24.95 USD
99-5455
Upgrade or restore your classic Honda motorcycle with this Exhaust Pipe Joint Collar — precision‑engineered and made in Japan. This genuine OEM part #18233‑425‑000...
Honda CB750F CB900F CB1100F m.a.c. chrome slip-on megaphone muffler set

Honda CB750F / CB900F / CB1100F M.A.C. Chrome Slip-On Megaphone Muffler Set

$529.00 USD
07-001/2613
Refresh the back half of your F-Model Supersport exhaust with these Chrome Slip-On Megaphone Mufflers from M.A.C. Designed to bolt onto the factory 4-into-1...
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1983 Honda CB1100F · Mufflers & Collar Buying guide

Keeping the factory header

The slip-ons are made to bolt onto the stock 4-into-1 header, so the original header stays in place. Inspect the header and collar before buying new mufflers.

Muffler parts to consider

Honda CB750F / CB900F / CB1100F M.A.C. Chrome Slip-On Megaphone Muffler Set M.A.C. chrome slip-on megaphonesChrome replacement megaphones with all-steel baffles for the stock header.View part Honda CB1100 / CB1000 / CB900 / CB750 Genuine Honda Exhaust Pipe Joint Collar ~ OEM 18233-425-000 Exhaust pipe joint collarGenuine Honda 18233-425-000, made in Japan, listed for the 1983 CB1100F.View part

About the megaphones

The page describes chrome replacement megaphones for the factory F-series 4-into-1 header, with all-steel baffles, and says re-jetting is not needed, though running should still be checked afterwards. It lists the CB750F, CB900F and 1983 CB1100F Supersport.

Joint collar and gasket

The genuine Honda joint collar replaces 18233-425-000 and sits between the header and mid-pipe. A muffler joint gasket for the 1979-83 F models is listed under exhaust gaskets, so order both if you are separating the joint.

Muffler questions

Do the megaphones fit a 4-into-1 header?

Yes. The listing says they are designed to bolt onto the factory 4-into-1 stock header on the CB750F, CB900F and CB1100F Supersport models. The header itself is not included.

Is the joint collar aftermarket?

No. The listing names it as genuine Honda OEM 18233-425-000, made in Japan. Its fitment includes the CB1100F along with the CB1000, CB900 and CB750.

Will I need to change jetting?

The M.A.C. listing says no re-jetting is required. Check plug colour and running after fitting any exhaust change, and adjust only if your bike needs it.

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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