what should my first few mods be on my quad? *'02 400ex* so far all i have is new mudshark tires... and new front tires *dont know what kind* and a new bearring carrier in the rear swing arm cuz mine was F'd up...other than that... STOCK, so any suggestions are great, i'm looking for more power in the low/mid range, and if i can squeeze some speed in the top end.... while modifying the low/mid that'd be sweet too

 

Start with a good S/O (like HMF) along with a K&N with outerwares and remove the lid from the air box. I would then go with a Hotcams Stage 1 (if you can turn a wrench they're not that hard to put in). After these mods you have to properly jet the carb. For a stock motor it will run pretty good if properly jetted. Did I mention it has to be properly jetted?........[img]i/expressions/face-icon-small-happy.gif[/img]

 

But let me also add, if you go with the K&N and open air box you will need to do a lot more maintainance with your air filter.........[img]i/expressions/face-icon-small-tongue.gif[/img]

 

I always suggest that you protect yourself and the bike, before you even think about engine mods. Here is my list for any new bike, in the order that I do it, as my funds allow:

Nerf Bars.
Full chassis and swingarm skid plates.
Bumper.
Holeshot Tires (those stockers won't last long!) on ITP rims.
IMS Desert Fuel Tank.
Handlebars.

After that is done, you can move on to the engine:
Vented airbox lid (http://www.ehsracing.com/), UNI foam air filter (I avoid K&N), FMF Factory 4 complete exhaust (with quiet core and spark arrestor), and a rejet of course.
Sprockets and chain.

Suspension.

 

Desert tank? Chain? Full skid plate? Avoid K&N? FMF?
[img]i/expressions/face-icon-small-confused.gif[/img]
Glad your not building my bike!

 

Out here in real nature (not some candy a$$ track), you risk a long walk home if your bike isn't dead solid reliable!

 

AMEN

 

i find that all too true, the only change i would make is the handle bars, an bumper arent all that necesary, but as cheap as they are you might as well... after my plow, my first mods will be...
megamax pipe,
filter + jets,
tires...
id get skids but they wont work with the plow...

 

i would get a stage 1 hotcam and a full pipe. for the pipe i would look in to sparks, lrd, and hmf. just my opinion.

 

nerf bars
skid plates
handlebars
bumper
real tires and rims
then motor stuff


safety stuff 1st,,,,then go faster