[Fred80]

I have a 2013 yfz 450. I want to get more power out of it. Which mods do you guys recommend?

 

[hew]

The big 3 (Intake, exhaust, Jets)

 

[armstrongpb]

is it efi or carb model? agree with the above. Intake, exhaust, jets or if efi (tune) if you want to keep it reliable keep the internals stock