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ItsJuniorJ

Cylinder Head

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Hi Everyone,

 

I need to replace a cylinder head and exhaust cam on a friends 2017 KLX450R, but wanted to check whether a same year KX450F cylinder head and cam will interchange?

 

Any advice would be most appreciated!

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You would need an older head.  The KLX is a 2008 KX450 with a go button and light.  

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You would need an older head.  The KLX is a 2008 KX450 with a go button and light.  


Roger that! So, that generation head and cams will drop straight on? No other mods needed?

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It did on my bike, I am also running KX450F exhaust.  The KX head with 1mm bigger valves will only benefit from the larger exhaust.  The stock KLX header is the same as a KX250f.  Gotta let the girl breathe.

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It did on my bike, I am also running KX450F exhaust.  The KX head with 1mm bigger valves will only benefit from the larger exhaust.  The stock KLX header is the same as a KX250f.  Gotta let the girl breathe.


Got the head and cams in. It’s all running. I need to source an aftermarket exhaust to compliment the increased flow. Thank you for the info! It’s worked out great!

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