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Thread: Can I fit much later silencers?

  1. #1
    Senior Member Windmill John's Avatar
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    Can I fit much later silencers?

    250K0.

    Does anyone know, with a little modification expected, if much later silencers will fit a 68?

    Even as late as Dream. Or Super Dream etc.

    I’m finding it extremely difficult to check or source silencers; obviously….

    I’m happy to take the gamble of buying a Super Dream silencer to test if there is a possibility it can be made to fit.
    Dude, my 1968 Honda CB250
    Tweety Pie, my 2004 BMW F650GS
    South coast of England
    www.kittos.co.uk

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    Sensei 66Sprint's Avatar
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    Please be more specific as "Dream" or "Super Dream" means little without a CB/CL/SL/CA/CM designation, engine cc, and K model or year on our side of "the pond"......
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    Senior Member Windmill John's Avatar
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    Sorry, good point as there was a Dream in the 60s!

    I was referring to the CB250N, so as late as 78-86.
    Dude, my 1968 Honda CB250
    Tweety Pie, my 2004 BMW F650GS
    South coast of England
    www.kittos.co.uk

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    Sensei 66Sprint's Avatar
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    Sorry, can't help as we didn't get those here, so no point of reference.....
    Contact info :
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    Senior Member Windmill John's Avatar
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    I know a lot of people don’t mind, but my K0 is very loud; don’t tell ancientdad….

    I just want to find something quieter. I’ve had a K4 years ago and I’d be more than happy with those silencers.

    I'm happy to forgo a little non standard to reduce the decibels. I’ve had a lot of bikes; too many and nothing comes close to the volume; maybe an old British bike I had…

    I’d be happy buying the CB250N silencers to try, but would need to get down pipes. If I cut mine and the silencers were bad, or didn’t fit…..!!!
    Dude, my 1968 Honda CB250
    Tweety Pie, my 2004 BMW F650GS
    South coast of England
    www.kittos.co.uk

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    Administrator LongDistanceRider's Avatar
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    Since your CB250K0 is essentially a smaller displacement engine in a CB350K0 frame why not go with CB350 pipes and mufflers?
    Jim O'Brien
    1979 CM400T aka the Roadbike, 1978 CB400T1 semi restored, 1972 CL350K4 restoration and the 1971 SL350K1 disaster zone.
    Plus 2 SL350K0's , 2 SL350K1's, 1 CL350K0 and 1 CL350K1 waiting for space and time
    Contact: 408-239-9580 or [email protected]

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    Quote Originally Posted by LongDistanceRider View Post
    Since your CB250K0 is essentially a smaller displacement engine in a CB350K0 frame why not go with CB350 pipes and mufflers?

    Davidsilverspares.com should still have some decent quality reproduction mufflers that will fit your CB250K0;I'm referring to the CB350K4 model mufflers which I saw on their site a few months back.
    I have worked with CB350K3-K4 bikes and the model HM344 stock mufflers also has letter stampings in their cases which say CB250/350.

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    Senior Member Windmill John's Avatar
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    Thanks both. I know they are the same, David Silver are out of stock, I have had them on back order with them since I got the bike!!!

    No one else in UK seems to list any K ones. Classic Bike sell some, but I’ve heard they are loud.
    Dude, my 1968 Honda CB250
    Tweety Pie, my 2004 BMW F650GS
    South coast of England
    www.kittos.co.uk

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    I think that the pattern pipes sold by DS et al are / were made by the Brituro company, located in Birmingham.

    HONDA CB250 – Brituro

    Might be worth giving them a ring ?

    Ashimoto actually got them to make him a pair to his specification - unchromed, so that he could tidy the seam welds before getting them chromed.
    1972 CL175K7
    1970 CB174K4, 'upgraded' to a K6 alike
    1971 SL175, with a few non standard parts !
    1998 CB600 Hornet

  10. #10
    Senior Member Windmill John's Avatar
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    Thanks for that Richard, might be worth a contact.
    I know there is one in the UK whose pipes are louder; not what I want.
    Dude, my 1968 Honda CB250
    Tweety Pie, my 2004 BMW F650GS
    South coast of England
    www.kittos.co.uk

  11. #11
    Senior Member crazypj's Avatar
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    There should be plenty of 250N silencers available and all will be 'semi- universal' as most come with adapters for different diameter pipes.
    The only 'problem' I've ever found fitting mismatched pieces will be the rear mount will need to be fabricated.
    Sometimes it's as simple as filing out the mounting holes and other times it's make a complete new bracket.
    As 250N mounts silencer to swing arm pivot you will almost certainly need to make something. Use 3mm thick steel, probably get some from B&Q?
    As long as you have am hacksaw and a drill it's simple enough
    There are three types of people in the world, those who can count and those who can't.

    I'm not a complete idiot, but, I'm working on it

  12. #12
    Senior Member Windmill John's Avatar
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    Thanks again. I got a pair of universals two weeks ago. Was due to fit this week, but something came up.
    Hopefully next Saturday. I’m leaving myself plenty of time for any adaptation, including a bracket as a side stand stop.
    Dude, my 1968 Honda CB250
    Tweety Pie, my 2004 BMW F650GS
    South coast of England
    www.kittos.co.uk

  13. #13
    Senior Member crazypj's Avatar
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    LOL, I probably still have a few of those laying around from fitting aftermarket exhausts at Leslie Griffiths Motors and Two Wheel Services (even though neither exist any longer)
    I hear Thunder Road Motorcycles are doing OK though with the same general manager from TWS and LGM (Bridgend South Wales)
    There are three types of people in the world, those who can count and those who can't.

    I'm not a complete idiot, but, I'm working on it

  14. #14
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    That CB250N 'Super Dream'.. Were they a great running bike ?

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