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View Full Version : TRX 400EX. Crf250r Timing chain Mod?



Jt2005trx440ex
01-15-2013, 07:24 PM
Hi. I have an 2005 Honda TRX 400ex with the 440 ex bigbore kit and a stage two hotcam. And the timing chain is making a ticking noise like most the 440s do.. I heard that u can take an Honda Crf250r timing chain and use it on the 400 and it will fit tighter and not tick? I am just curius if any one out there has tryed it and knows if it aculley works? If so leave a comment and if u know any thing about that hallar at me thanks JT.:rolleyes: :D

AtvKid4Eva
01-15-2013, 08:10 PM
get a 02' crf450r timing chain its a direct replacement and twice as thick. crf450 not 250

exvetrider
01-15-2013, 08:14 PM
Im not sure about the crf 250 chain,but you can use the crf 450 chain and it will work just fine.Make sure your tensioner is good,that is what usually goes bad.