What makes your 2000 yz 125 bog at top end of every gear?

A bogging issue at the top end of every gear on your 2000 YZ 125 could be caused by several factors. Common culprits include a clogged air filter, improper jetting of the carburetor, or a malfunctioning spark plug. Additionally, issues with the fuel system, such as old or contaminated fuel, can also affect performance. It's important to check these components systematically to identify and resolve the problem.