bore

[400exrider720]

This winter I am going to bore my 400 to a 440. Is this a good Kit or can you recommend one cheaper and better?http://www.maxpower-engines.com/big-bore-kits-ATV/trx440-stealth.htm

[christophere251]

sounds ok to me though the price is kinda high! I just used a wiseco 440 kit bout a stage 2 hot cam and white bros rev kit for $340 then i got the sleeve installed for $120 I had to put it together myself.

[400ex18]

hey i would go with a 416 kit they really opened my 400ex, but the only bad thing about it is that it runs a little hot!!!