what needed to make a realy fast 400ex [Archive]

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6858-400ex

03-30-2006, 11:53 PM

what are all the things i could do to make the most power out of my 400ex. what bore size, comp, and besides nos and a turbo

03-31-2006, 05:42 AM

a crf450 engine..;)

ride_red666

03-31-2006, 11:14 PM

460 stroker and up

400EX QUADER

04-01-2006, 12:40 AM

465 piston with a +4 stroker crank to make it 500cc.;)

ss440ex

04-01-2006, 12:49 AM

CFR-YZ it!!!

Rico

04-01-2006, 04:36 AM

I get R Dun with the setup below.....:macho

Kiehn 42 mm Carb
HRC cam
JE Piston 10.8:1 Compression
Hinson Clutch Basket
Cometic Gaskets
Sparks Racing 8 Plate Clutch w/Heavy Springs
Sparks Heavy Duty Cam Chain
Lightened Flywheel
GT Thunder Porting_
GT Thunder CDI
GT Thunder Heavy Duty Head Studs
GT Thunder Air Box Intake Tube___ _
FMF Powerbong Header
Red HMF Silencer
AMSOIL Air Filter
AMSOIL 20w-50 Synthetic Oil

jak1389

04-01-2006, 02:07 PM

kx/cr 500 motor and amazing suspension:D

jordan_m6

04-01-2006, 09:32 PM

a fast strong thumb.

power means nothing when your suspension keeps you slow.