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4rt Big Bore Kits

gomey68
in Montesa

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Hi,

Any one got any comparisons, recommendations or opinions on the big bore kits available for the 4RT? e.g, S3, HRC, etc.

Thanks,,,

  • Quote

    Perhaps someone can confirm, but I was told be a good Over 40 national rider in the UK that you need to replace the head if you put on a 300cc cylinder because it doesn't clear the fuel properly.

    I'd be interested in the answer because I'm looking at a 280 kit, but not sure what would be best.

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