Need help I'm a Honda dummy

[Zemo]

Guys,

I just bought a 2002 400EX for my grandson. I have a 06 Z400 Suzuki so I know them pretty well, but know squat on the 400EX. I need to know part compatability for the 02, how far up in model years can I go and stuff still boltup without major modifications? Mostly looking to make some shock/suspension upgrades without spending a bundle since my 15 year old grandson just "THINKS" he wants to start mxing with me. Any information will be greatly appreciated.

Thanks in advance

Mark

[Ruby Soho]

everything 99-04 will fit on eachother. nothing changed through out those years. 05-07 gained reverse, different plastic and some other small stuff.

[Zemo]

Thanks for the info, give me a starting place.

[Ruby Soho]

as for suspension upgrades, a nice upgrade is 450r shocks, and then send them to GT thunder for a rebuild with what ever you want done to them

any other questions?

[Zemo]

I did that with my 06 Z400 shocks, and that was the best $780 I ever spent. Unfortunetly my grandson has very limited experiance riding quads and all that is on auto trannys, so I'm gonna have to teach him the fine art of using a clutch and shifting gears, Wonder what will break first, my patience or the clutch :eek:

[troutman561]

You also cant interchange front sprockets between the 99-04's and the 05-07's.... umm shocks are the some for sure, along with pretty much everything but what I mentioned and the plastics... im sure parts of the tranny are different too but you prob wont be venturing there...

[250x_kyle]

450r shocks will fit. 250r shocks will fit with slight modding. 250r axels will fit but the hub splines are different so you would need a 250r axel and hubs. z400/kfx400, 250x, 250ex, 300ex, 400ex and 450r wheels and tires will fit.

[Zemo]

Thanks again or the info, keep it coming, will make getting this thing race ready for my grandson alot easier


Mark

[dragex400]

If you do anything electrical the 05-07 connections are different from the 99-04. I installed a dynatek programmable ignition and you have to plug into the constant twelve volt source and I have an 04 ex with a 05-07 dyna and the plugs didn't match.

[ilpadrino113]

honestly if it is your grandsons first quad of that type i would keep it stock. The shocks and power are very good for a starter platform and i'd let him get used to how they work before upgrading.