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  1. Derbi / Metrakit / NSR50R / YSR
    So I just recently picked up a 1988 ysr50 and am having a blast with it but, in my true fashion I don't want to keep it "stock". I've been doing too many engine swaps lately that I don't feel like doing another so I would like to build this engine. I've been trying to do a bunch of research to...
  2. General Pocketbike Discussion
    I picked up a 1984 Yahama rx50 it uses the same engine as the ysr. It still has the stock oil injection. How hard is it to install the block off plate and will I need to get a new carburetor?
  3. 4Stroke Midbikes
    Hello you guys and i was wondering out of all these engines with one should i get for my x17 that i purchased from my i will be doing some pictures attachment also these pictures are actullay what my looks like these are not my pictures of the real bike ok i will post some links of the engine...
1-3 of 4 Results