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  1. F

    Thumpstar 110 front fork mods

    Does anybody no of a harder spring for the 110 fork, also right amount of oil to add and what weight of oil.
  2. F

    Thumpstar engines:(

    Does anybody know of a decent engine for the thumpstar pro, i have just blown 2nd gear, engine is blowing blue smoke, and is pumping oil out the overflow, is there a kit or a way of strengthening the engine/gearbox. These bikes are doin my head in! :(
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