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View Full Version : Are you ready for somethin faster than a 250r 400ex Z400 an can leap around a yfz450



416exmx
08-22-2003, 01:15 PM
Well here it is... Buy this, put it in your 400ex frame and go to the track. save money and dont buy a new yfz450 or trx450r, but run your ol' ex. You will end up dumping a ton in a new quad with mods anyway so just keep yours and put this in it. here is what we got in this 400ex motor.

-TC425 national kit
-TC 924 MX cam
-TC revbox
-Like new hardened rockers
-Like new valves, springs, & keepers
-Like new crank and rod
-Like new cam chain & tentioner
-Like new oil pump
-Lightened flywheel (revs like a bike motor)
-Wiseco 12.5:1 piston
-TC port and polish (done by 4-playatv)
-Heavy duty 12mm studs
-Like new Hinson basket, hub, pressure plate and 8 plate clutch with new springs, 250r steels and 400ex frictions.
-Hinson quick change side cover (trick)

Everything inside it was new this spring. This thing will rip your arms off. It is fast!!! All work was performed by Rob Brown @ 4-playatv....Thousands and Thousands invested in it...asking $1750.

ESR250R
08-22-2003, 02:43 PM
hahaha

416exmx
08-22-2003, 02:50 PM
haha, thanks ESR250R

canadian400ex
08-23-2003, 06:47 AM
How does the 425ex engine compare to your yz426?