Is there any way you could install a liquid cooler on a 400ex and if there is any how much would it cost? If this cant be done will being air cooled effect me racing a little if at all. I'm buying a new quad but I'm not on a price limit but I dont know if I should start out witth a yfz or 450r since I'm only 15. Any suggestions.

 

If you find a liquid cooler for a 400EX, tell me because im pretty sure that is the only reason the Z400 will beat it.

 

correct me if i am rong but i don't think the 400ex has a big issue with overheating, liquid cooling would be nice but u don't rely need it.

 

four stroke tech made a kit a few years ago that they weld up cylinder and head and made a water passages. it used a ktm electric water pump and a 250r radiator . it was about a grand but thats all i know .

 

It's not worth it. More parts to break, more money, and more weight. I've never heard of a properly tuned 400EX overheating, except for some big bore's.

 

Yeah and if its over heating jsut put a bigger oil cooling rad on. I just got a Jagg oil cooling kit for my 300ex and its really bad ***.

 

http://www.off-road.com/atv/projects/400ex/coolkit/ cool kit, cools it 40 degrees