2016 CRF250

Remap, pipe,good fuel, geared 10-50, fresh tires, suspension,sprung,valved,set sag.ride.

Drill a hole in the upper motor mounts, trust me on this one!

Remove the red cable connector from the left radiator and zip-tie it to the frame, you'll save yourself a radiator. (You can see it in the upper corner on the picture)

Screw in the steering-damper almost max, I'm 3 clicks out,

Remove backfire screen in air filter cage.

No need to drill the airbox, the 16 are drilled on both sides from factory

Check sag, revalve and go ride that thing.

I follow this one. The hole in the engine mount is interesting. I removed the hanger from the grounding and placed it direct to the frame, also to save the radiator.

I heard that it will reduce vibration and another flex in the chassis. Geico Honda got the same hole..

I drilled it, and went out riding and actually forgot that I did it (had alot on my mind) and didn't think about it before i got back to the workshop, and got to think that I felt less "armpump" and vibration..

Some people may call it placebo, but i will stand by it..

Over the years various models have added the hole. Few go teams run it. There are carbon mounts too

I have dual carbon Yosh on my 14 CRF250 and it makes a HUGE improvement. The sound is so much easier to hear where my bike is at RPM wise, and it pulls harder..important since I am a big boy for a 250f..and a Honda at that.

You may want to consider going to a single, they are a bit cheaper. Stock exhaust is great for trails but if you ride track, get a aftermarket pipe of some kind.

Lol, Such a small hole is not gonna do much to the motor mount in terms of stiffness/strength. Maybe geico mounted something in there and removed it and kept the hole.

Stock suspension is some of the best right out of the box "if" your willing to put into the time to learn it! Revalving is always a good way to go. While your in there upgrade internal cartridge seal setup to SKF. Minimizes stick slip and amount of force it takes to get the fork in motion. Smoother in the chop. SKF Fork seals help a small amount stock seals are really good and cheap.
Proper Spring rate for your weight on the shock. Set Sag at 105mm.
I'm testing the Merge Racing knuckle and liking it so far, but my time with it has been minimal.
I have my steering damper revalved stiffer with dampening both ways instead of just center out. Or play with the clicker and find what your like.
Stk head pipe is really good as well. Full systems have a benefit, but if your on a budget switch the muffler to a single side FMF, Dr.D, Bills, whatever your flavor.
Remap ECU for your type of riding, fuels, pipe, cam, piston, etc. I've had mapping by Tokyo mods, Honda, and Naveen. My recommendation is Naveen for sure.
Have DCR regrind your stk cam. Solid performance increase bottom up. Better performance than any Hotcam
I like stock gearing other than 3rd seems short and I spend a lot of time in 4th. Going to play with a 14/52 combo and see if I cant make 3rd longer/more usable.
I don't know about drilling the motor mount. That's more of a factory level thing if you think you can feel a difference.
I don't think relocating the Red plug is necessary by any means. I have yet to see a radiator damaged by it.
My personal bike and my bosses bike is a little out of the realm of reasonable mods, but I can post up mods and pics if you like.