oldbiker Posted April 25, 2014 Report Share Posted April 25, 2014 I have purchased a bike listed as an OSSA MAR 250 1975 Documents confirm this. Engine number also correct - M222.... However, frame number is B241... which appears to be for a MAR 350. Any thoughts ?? Quote Link to comment Share on other sites More sharing options...
tltel Posted April 26, 2014 Report Share Posted April 26, 2014 Hi oldbiker A lot can happen to an off road bike in 30 years. Bits get swapped, upgraded and some times downgraded. If you have a complete bike and numbers match your reg documents I don't see much of a problem. I am guessing that the 250 and 350 frames were the same anyway. TLTEL Quote Link to comment Share on other sites More sharing options...
oldbiker Posted April 27, 2014 Author Report Share Posted April 27, 2014 Morning. Thanks for your response. Does anyone know if there is any difference between the 250 and 350 frames ?? Quote Link to comment Share on other sites More sharing options...
trialsrfun Posted April 27, 2014 Report Share Posted April 27, 2014 They were all the same I believe, if you can post photo's (I do not know how to) there are people on here who will be able to identify it for you. Steve Sell Marlimar OSSA is the person to contact for spares and advice. I will pm you his details. Quote Link to comment Share on other sites More sharing options...
woody Posted April 27, 2014 Report Share Posted April 27, 2014 The frames for the 250 and 350 were the same for each model year, so the '75 250 and 350 frames are the same, meaning the performance and appearance of the bike are unaffected by the change. Nothing to worry about unless you're bothered by originality - no point really on a 40 year old trials bike. Frame probably got damaged, someone replaced it. Confused by what you say about documents verifying the age though. A V5? If V5 states 250cc and numbers match the bike, someone has swapped the 250 frame for a 350 frame and actually had the log book changed - a bit of a rare deed you could say... Quote Link to comment Share on other sites More sharing options...
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