Ltz 400 vs 400ex whats faster? - Honda ATV Forum
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post #1 of 8 (permalink) Old 01-25-2017, 10:41 AM Thread Starter
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Question Ltz 400 vs 400ex whats faster?

Is the 400ex faster then the Ltz 400? whats a better atv.
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post #2 of 8 (permalink) Old 01-25-2017, 10:54 AM
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They are similar in speed and personal preference which one is "better." The Z is more technologically advanced, with reverse on all years, twin cam liquid cooled motor and rezzies on front shocks on 05+ models. 2009+ models have EFI. There are also Kawasaki (KFX 400) and Arctic Cat (DVX 400) versions also made by Suzuki. I think the 'Cat version looks the best.

I had friends that had 400ex's years back in the pre 450 era and they really liked them. I never owned one myself. I did own a KFX 400 for 8 years with no issues other than regular maintenance. Only sold it to get a Kawi 450R.

I think both 400 models are great quads.

Rob

I've owned many Hondas over the years, with 2, 3 and 4 wheels.
I’m always buying and selling projects and parts

Last edited by dr. feelgood; 01-26-2017 at 09:51 AM.
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post #3 of 8 (permalink) Old 01-25-2017, 10:55 AM
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Faster: LTZ

More reliable: EX

2002 TRX400EX

• FMF power bomb header
• FMF power core 4 exhaust
• Aluminum air box with battery relocation
• Twin air filter
• Easton bars and Easton risers
• PRO armor front bumper
• PRM aluminum swing arm skid plate
• PRM rear grab bar
• Aluminum frame skid plate
• Lonestar double row bearing carrier
• Tusk adjustable width racing axel
• Aluminum air scoops
• Oversize aluminum oil tank
• Traxion Racer XC 21X7-10 Front Tires
• Traxion Snowmax 22X10-9 Rear Tires
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post #4 of 8 (permalink) Old 01-25-2017, 07:32 PM
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It's all in the gearing. . . .
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"MOOSE WAGON "
00 TRX400EX aka "MOOSE ROCKET"
91 TRX250X aka "MOOSE WAGON" RETIRED
96 Polaris 400L sport (Mrs. Moose Ride)
07 Suzuki LTZ250 (Sons)
96 Polaris 250 Trail Blazer (daughters)
06 TRX450ER aka === Under construction

Progress and Help
PM FOR MANUAL HELP
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post #5 of 8 (permalink) Old 01-25-2017, 08:09 PM
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its all in the rider
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2003 440ex 11:1 gt thunder head studs pro taper bars blingstar bumper itp rims front and back more to come
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post #6 of 8 (permalink) Old 01-26-2017, 04:13 AM
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I've owned both and in stock form the Suzuki will be faster in a straight drag race. When I had my 400EX, mine had an aftermarket exhaust, air filter, 4 1" holes drilled in the lid of the air box, and was rejetted. A friend of mine owned a Suzuki and even with switching riders the Suzuki was faster. One the track, they're very comparable in handling, I personally prefered my EX on the track. The Suzuki felt more peppy coming out of the corners than the 400EX did, though.
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post #7 of 8 (permalink) Old 01-26-2017, 09:00 AM Thread Starter
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Mine is bored over 20cc and has SS pipe. Do you think it would be faster?
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post #8 of 8 (permalink) Old 01-26-2017, 09:40 AM
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No such thing as boring over 20cc's. Its more than likely bored over 20 thousandths of an inch. Which will make zero difference from stock in power. Your big bore options are 416, 426, 440 and those could be measured in cc's but they are bored in millimeters. Stock is 85. Yours is most likely a 85.5. 416 is a 87mm. 426 is a 88mm. And a 440 is a 89mm.

My 416 destroyed every z400 it has encountered. One of my friends has a stock bore high compression Z with oversized valves, high rev springs, and large cams and i walk away from him like hes standing still. When i ride his it does feel like its geared lower and pulls harder out of tight corners. The big difference is your 400ex will always beat the z400 in the long run. His will need rebuilt regularly and when his is down you will still be riding yours. My .02
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07 416ex
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