We ended up hauling our 06 4-stroke Honda TRX 450R in the upright position for 4 hours. When we unloaded the bike the front brakes locked up. What are your thoughts/opinions about hauling the 4-stroke in the upright position? Was that a bad idea? Also, why would the front brakes lock up? Do you think there was air in the line the begin with? We bled the brakes however they kept locking up on us the entire weekend. We ended up carrying a wrench with us on our rides because they would randomly lock up even though we weren't using them. Why are the brakes locking up? Maybe we didn't bleed them correctly. Can you please advise the proper process for bleeing the front brakes on the 06 4-stroke Honda TRX 450R?

 

I expected you to say it wouldn't start. When I stand mine up, it takes 20 kicks to clear out the carb.

Never ever heard of an issue with brakes, from standing a quad up.