'20 and '21 Beta 250 and 300's Factory Jetting is Lean

[Kels]

We have 2 new '21 Bikes.. 1 250RE and 1 300 RE...

The 300 got the "treatment" (head and new jetting right away) the 250 has had several rides 100% stock (it's getting the "treatment" very soon)

Anyway, We are at 5,000ft here.. 65-70 degree temps.. The 250 came with a 165 main and 38 pilot. The bike is lean with this jetting. It will run fine but it is very lean..

We have found that a 170 main and 42 pilot to be the best jetting for 5K and up on 91 non-ethanol fuel.. If you are running ethanol fuel.. I would prob go a bit richer..

Based on that, the 300 should run a 170 and 40 of 168/38. This is what we found on the '20 last year as well

So, just a "heads up" on this for those who have them.