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hmf

  1. New Member Intros
    2017 YFZ 450r on this I have a full HMF system, I have the GYTR air box adapter and filter on order. Of course it has the stock bog still and the HMF backfires, the machine runs and starts good but I’m looking to see if it’s worth getting the Vortex ECU. I plan on tracking it daily so I’ll spend...
  2. YFZ Powertrain
    I’m getting a Hmf preformance slip on and I have a 2020 yfz450r at the moment I have no programmer eventually I’m going to put one on but not now if I put just the slip on on now will it hurt the bike bc I’ve had many people tell me you can get a slip on and not use a programmer but if u got a...
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