[3 questions] - ATV Riders Forums - Honda, Yamaha, Suzuki, Kawasaki, Polaris, CanAm, Arctic Cat, Kymco ATVs

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3 questions
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Posted by: gkfx400

ive got three questions regarding my kfx 400

1. has anyone here used an aftermarket cdi? are they worth the money? how much improvement?

2. I saw someone on here with 450R front shocks on a kfx. is that a direct bolt on? do they work properly?

3. anyone have problems with a cracked frame? what is the best prevention? welding? gussets? braces?

Posted by: yoshimurakfx400

U probaly seen my my kfx with the 450r shocks on it, the mounted rite up no modifications at all. The shocks work really well they made a huge difference. As for the frame i havent had any cracks but ppl say guessets are the best way to go.

Posted by: BLAZE1

Dude that is like 10 questions!

You ain't gotta lie to kickit!

1.) idk

2.)idk

3.)I bought an 05' z and gusseted the frame within the first week. I am a heavier rider and I knew I didn't want any problems with my new bike so a gusset kit was under way. better safe than sorry.

Posted by: BlueZ440

quote:
Originally posted by gkfx400
ive got three questions regarding my kfx 400

1. has anyone here used an aftermarket cdi? are they worth the money? how much improvement?

2. I saw someone on here with 450R front shocks on a kfx. is that a direct bolt on? do they work properly?

3. anyone have problems with a cracked frame? what is the best prevention? welding? gussets? braces?

1.I do..Dyna FS...ANd yes it makes a huge different..My RPM's are way Higher..10050 compare to 8500

2.I run 450R for MX..I love them..Better than WORKS..IMO

3.Guss the whole FRAME

Posted by: YFZ450Ridr

id like to look into the 450r shocks for mine, but someone said that they tried that and had cut off part of the air shrouds because the rezzies were getting in the way, this true? i dont want to mess with all of that.

also does the 450r shocks lower/raise the ride height at all?

Posted by: BlueZ440

^^^^^^mine fits perfect...

The shocks lower your ride height

Posted by: Lolli2

1. If you find yourself hitting the rev limiter, or are planning motor mods, an aftermarket CDI may be in order. Some simply extend how many RPM you can go before engaging the rev limiter, and some are programable, for different timing curves.

2. Yes 450R shocks bolt directly onto the Z. Yes they do lower the front end noticably. The top eyelet is skinnier than the Suzuki shock and needs a washer to act as a spacer. Clamping down the mount without it will only help to pull the mount from the frame. This is one of the most common places that the frame cracks.

3. Yes the Suzuki frames crack. Of the '03 Z's I've seen, I've only seen one that didn't at least have paint missing where the upper shock mount is. We bught it. Then we took it apart and gusseted it. If you can find me an '03 that is not even missing paint, it's either new, not ridden, or been gusseted. I've got 4 or 5 Z's now, but they are all '03's. I can't speak for '04 or '05 models.

Posted by: jjthekj

Oops, I was logged in as my ole lady.

The 450R shocks don't fit with the stock air scoops. They will with most aftermarket scoops.