guys im new at ltr 450 please let me know what is the best mods to add in my quad

hey guys i need your help excuse my ignorance but i was trying to change my light to LED and somehow i opened a few things and now this part idk where it fits back i tried everywhere i cant find the place where it was please help me out.

Just wanted to give you guys a look on what I had to do to the crf head to get the crf 250r angled boot onto the head to allow the carb to clear the rear shock mount. The head is rough right now as I'm still tweaking it and this is probably the 6th time I'm tweaking a few things in the intake...

I just rebuild my entire motor from top to bottom. Today was the first startup and almost immediately the NEW output /countershaft seal located behind the front sprocket started leaking oil. What could be the problem here? OEM oil seal was used. Thanks!

Hi all i new to the forum and in need of some help on my LTR450 So the problem i have is due to my own fault. Basically i haven't ridden my 450 for at least two or so years. I now having running issues with the quad due to the old fuel that's was in the fuel tank although i pump the old fuel...