Does anybody run a 426 kit and if so do you like it and is it reliable

 

i have a buddy that i drag race with who has a 426. It screams, with a 250 lb rider on it he is running a 5.50 in 300'. The EX engine has trouble with heat and the 426 is a big overbore making this prob worse. i went with a 440 cus it has a sleeve. hope this helps

 

Check out the new ATV RIDER it will have the new 450 YAMAHA on the cover.