Keefer Tested

Keefer Tested: 2019 Yamaha YZ250F

Comments (4)
      1. I just got a new 2020 YZ25f and it is backfiring when riding. mostly in the air during a jump.
        Any ideas of what should I do? ?

  1. I think I bought lemon. The bike has two hrs on it. Already had to replace the battery. And it has another problem now. I have a video I’d like to send you. I’m starting to think power tuner is jus so u can get the bike to run right. Spark plug issue I think. I’m not liking Yamaha right now. I wish I’d listened to my son and got a KTM. He loves his new 2019 85 sx

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