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ebo 4356
04-25-2008, 10:46 AM
What should i bore my 400ex engine to a 416, 426, or a 440. I still want it to be reliable, and what other mods would i have to do if any.

REDRIDDER
04-25-2008, 10:52 AM
To start with ..what would you like your quad to do? power,acceration,both? trail ride or mx. It all really depends what your looking for.

ebo 4356
04-25-2008, 10:57 AM
I ride woods, and do some track riding also.

trx400EXtreme
04-25-2008, 11:09 AM
if you want reliabillity go with a 416 11:1 comp. this aloows the sleeve to still be pretty thick, and the 11:1 comp. will make a night and day difference

Honda#4
04-25-2008, 11:14 AM
if you want reliabillity go with a 416 11:1 comp. this aloows the sleeve to still be pretty thick, and the 11:1 comp. will make a night and day difference


X2 with a Stage 1 cam and a Port & Polish you'll be rippin it up.