Hey all! I was hoping to get some feedback on best bang for my buck as far as full / slip on exhaust, jet kits, and air filters. I just picked this thing up a week ago and probably have about 14 hours on it. I am an adult rider (240 lbs.) and this little red devil will do 52 with my fat a** on it. Just hoping for a little more. Any help is greatly appreciated.

15xx hours and 5k miles. but what happens is when i over rev it on accident obviously. It locks it self in that gear and wont let me shift up or down unless i shut it off with the key and then it will allow me to change gears and start over. What id like to know is if this is a factory protection or if theres something wrong.

Im not sure if this is in the right section or not.

Hey guys, installing some stuff on the 400ex (hoping to write up on some stuff once I get it installed) such as a Trail Tech Voyager, an atf/O2 guage, and a kill switch.

All of this mounts to Tue handle bars and am starting to run out of room. So my question is, what is the bar going across my handlebars (black rental foam thing)? Can it be removed?

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Traded out some electrical work for a 2006 Trx90. My daughter is 7 and has been riding a Kymco Mongoose 90 for 2.5 years (time to shift). On Wednesday I ordered a Teixeira Tech 3.5" over arms with Fox Floats front and back. Can’t wait to get her going. Anyway just changed the oil, cleaned out the carb, put in fresh gas and battery. Runs like a champ. Sat most it’s life and stock to the bone. When she’s ready (soon I’m sure) I’ll do the bolt on things.
I read to cut the pink wire? Is there a CDI i can change out or is cutting the pink wire the same result? So just air cleaner (soon) and a pipe way down the road. We live in central Ca. and desert, dune and trail ride equally.

Had to get a new one way bearing but doesnt have an "outside" marked, only a directional arrow. I assume this is "outside" Please and thanks? STORY BELOW: I aquired a 1989 2×4 300 trx utility. Came with a good top end in a box and 2 case halves minus the works. Bought a motor from a junkyard but found drain plug cracked and stripped. Luckily I had a good case half to combine. Started with a Clymer, studied hard, highlighted, made tabs on pages. completely disassembling and combining all good parts to make a whole. (Took 52 pics to ensure a good bread trail cause I knew it would have to be done over time). I should have the engine back together by may and the frame preped soon thereafter. Very excited! Thanks

Problems with catching neutral ALOT up shifting.after the quad warms up issues the quad not engaging the neutral light making the quad difficult to start (wont start in gear), if the quad is level it will engage the light just fine but any kind of incline and the light wont turn on (even though the quad is in neutral) 426 ex, clutch delete done, choke delete done, stage 2 hot cam, runs half pump 92 non oxy and half 110 race, burgard +2s that i really do like, lsr rear axle, oil cooler Shrouds, dual coolers. More and more done.

Getting 2 quads today that haven’t been started in 5-6 years (2005 450R and 400ex). On another thread, someone told me to squirt some WD40 down the spark plug whole to get things loosed up before starting. Then I was was told "no", don’t use WD40. I’ve read on other threads where some people put some oil in there, and just let it smoke out after a couple minutes.

So I’m really looking for what I should put in there, and how much of whatever that is. Recommendations?

As for other things, I’m all set to change oil, tranny, coolant fluids, have new air filters, spark plugs and a battery. Also will probably do some carb cleaning. So that part is covered. Just unsure on the sparkplug whole thing prep thing.

I have a 87 trx 350. When I turn the key I have no power to lights fuel pump or even spark at the plug. I put a new battery in it. Checked all the fuses I can find. Followed the wiring to the ignition and have power to that point but when I turn the key notta. Thanks for any help

I have a 87 trx 350. When I turn the key I have no power to lights fuel pump or even spark at the plug. I put a new battery in it. Checked all the fuses I can find. Followed the wiring to the ignition and have power to that point but when I turn the key notta. Thanks for any help

Okay so I’m fixing this ATV up for some guys on a farm and they ran the thing with a rusted tank and the fuel filter got so plugged up to the point it wouldn’t suck any gas. So we did the Electrolytic Rust removal and made it look like new and bought a new fuel filter. It also has a new air filter.

At first it had a problem where it would rev on it’s own and wouldn’t come back all the way down to idle but now I’ve fixed that playing with the a/f mixture screw and it comes right back down to idle just fine. We bought a new spark plug and threw that in and fired right up. but we have one slight problem where the choke doesn’t seem to idle when it is on. It will fire once like it wants to start but it doesn’t keep running. The only way you can keep it running with the choke ON is if you keep giving it half-full throttle and it will blow smoke and sound like garbage. But it idles just fine and has no problem when the choke is off. It is weird I have the opposite of what people have where it only runs with the choke ON instead. Our 2003 Honda Foreman 450 idles with just higher revs and will sit with it on all it wants, but this four-wheeler won’t even run with the choke on? Help is much appreciated! Thanks!