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02-27-2002, 07:11 PM
I was just wondering what the life expectancy is on the 400ex motor. I was also wondering if there are any parts that should be replaced after a while(ie bearings, timing chain etc..). I know these motors are extremely durable and have a long life but i dont really know the details. Thanks.

02-28-2002, 08:08 AM
c'mon peoples this is an interesting topic!

JabberJaw
02-28-2002, 11:37 AM
My brother has two Honda 250x Four Strokes with original motor, one is an 89, the other a 91. Both still run excellent, and he thinks you are supposed to change the oil only twice a year!

400exRacerX
03-01-2002, 12:10 PM
Look in the Powertrain Forum and there is a thread on "motor life" in there with more replys than this one.