I was wandering what the best oil would be to run in my 400EX? Also I'm going to bye a Yoshimura slip on, rejet and put on a air filter, should I go with the K&N or the Uni air filter?


2000 400EX soon to be Modified

 

go with the yoshimura RS-3 Pipe, and a K&N power kit! good combination.

 

Use Honda GN-4

 

DON'T USE THE HONDA OIL HONDA BUYS IT FROM THE CHEAPEST BIDDER, THEY DON'T ACTUALLY MAKE THEIR OWN OIL. USE TORCO RACING OIL 20 W 50 SYNTHETIC I HAVE USED THAT ON MY 400EX SINCE I GOT IT AND IT WORKS GREAT

 

hi han a 2001ex.....

 

I am sure that is what they tell team Honda I use Honda's oil.. The synthetic..in the gold bottle