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  1. Ninja 650R, ER6
    When cruising I can feel the bike jerking back and fourth and even worse at 7k and above. it is like jerking throttle back an fourth but the rpm’s I can see are not moving up and down . I replaced the spark plugs no change the lower rpm the less I feel it. Fuel tank is super clean and so is the...
  2. Ninja 650R, ER6
    Hi, so I've got a 2012 650 with 13k miles that I bought used a couple of months ago. It's been riding fine, if a bit warm, until 3 weeks ago when it suddenly started bogging (power/revs lurching down with throttle open?) and surging (power/revs spazzes out between giving power and feeling like...
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