Keefer Tested

Top 5 Mods: 2021 Yamaha YZ250F

Comments (3)
  1. So who has the better mapping for the Vortex…XPR or Twisted? we have Pro Circuit T6 pro and light headwork running U4. Stock Cams

  2. 35+ b/c rider here. Currently riding 2019 KTM 125sx with full Lynks mod motor. Smile factor is my #1 priority. However, I do value power as long as it is “ride-able”. How much more power would this give and would it be worth the switch? I like the sound of the “free feeling” map and torque of a 4 stroke packaged together.

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