Cm 450 e & cm 450 c
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  1. #1
    Junior Member kenlang69's Avatar
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    Cm 450 e & cm 450 c

    So I am working on my 83 CM450e cafe build. I want to lower the front end, however the upper tree on the CM450E is not adjustable. I have ordered on e bay a triple tree assembly from a 82 CM450c on e-bay that is adjustable. However, when i went to order new bearings it does not show they are the same for both bikes. From what I know the frames are the same and the tree differs due to the air shocks on the 450C. Has anyone switched these or know if it will work. I initially only wanted to change the top tree, but the stem is not long enough.
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  2. #2
    Super Moderator longdistancerider's Avatar
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    If you go with the tapered roller bearings offered by All Balls Racing they are the same part number 22-1011 | All Balls Racing
    Jim O'Brien
    1979 CM400T "road bike" modified for travelling
    1978 CB400T1 restored
    1972 CL350 survivor restoration

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  3. #3
    Senior Member Old Putz's Avatar
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    The CM450E was built along chopperesque lines- teardrop tank, raised head tube, stepped seat, and dropped rear end with a fat 16" rear tire. Cafe racers were traditionally built from "standard" motorcycles, so what you're doing is kind of like trying to build a sports car out of a jeep. Re-lacing the rear wheel with an 18" rim (along with running some slightly longer rear shocks) might well restore some rear ride height, along with giving the bike a more traditional, standard look. This would also quicken the steering response, something desirable in a cafe racer.
    Yeah, I've been doing this for a while...

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  5. #4
    Junior Member kenlang69's Avatar
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    Long Distance Rider, thanks as always. FYI my carbs ended up getting all the original parts put back in an runs sweet. Guess it didn't like the cheep aftermarket crap.
    And I agree the CM450 is not a sought after cafe build pic, but got her for $350 clean title and decent shape so what the hey.
    Last edited by kenlang69; 01-05-2017 at 09:34 PM.

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