top end rebuild

[riverex]

how often should you redo your top end i have rode my alot but it doesn't use any oil. shoud i do it just for saftey and how much on average would it cost.

[beak7707]

What ride do you have, we need to know what you will be rebuilding.

[riverex]

i have a 400ex 2002 pipe jet kit k&n filter

[sandspanker]

:cool: I HAVE A 2000 400EX STOCK PISTON IN IT COUNTLESS HOURS ON IT NEVER REBUILT IT DOES NOT SMOKE RUNS REALLY STRONG. I RIDE IN THE MUD AND SAND. I RIDE VERY HARD. SO YOU HAVE A WHILE BEFOR YOU NEED A REBUILD..:macho