[A question for all you 300ex owners] - ATV Riders Forums - Honda, Yamaha, Suzuki, Kawasaki, Polaris, CanAm, Arctic Cat, Kymco ATVs

Pages:1

A question for all you 300ex owners
(Click here to view the original thread with full colors/images)

Posted by: lil_billy_300ex

I own a 1997 300ex with some mods, built for mx, and i race, but i cannot seem to keep my fricken bearing carrier tight in my swingarm. i have a lonestar twin row bearing carrier in there and the chain keeps coming loose from jumping or whatever. I almost want to weld the damn thing up, well not really. should i go with a new leagers or lonestar swing arm? its a little spendy. anyone got some tips on how to keep that bearing carrier tight? thanks

97 300ex
white bros promeg pipe
works shocks
400ex carb
k&n air filter and jet kit
11:1 piston web racing cam and heavy duty valve springs being put in.

Posted by: lil_billy_300ex

i will be putting some pics of my quad and a few pics of me hitting some jumps as soon as my motor gets done. thanks

Posted by: hoser 400ex

get rid of that junk matt!! shoulda sold it to your bro. j/k we'll get that pile figured out!! i can see all the first place trophies already. you can have the trophies but i get the trophy girls!! lol j/k

Posted by: outacontrol31

swingarm is most likly cracked, same problem with 2 different 300exs, might be just a hairline crack. if your gonna keep the 300ex for a while invest in a good shock swinrarm and bearing carrier combo. stock shock while racing will break even a aftermarket swing (i did) so we boaght another swingarm and a good shock and problem solved

Posted by: lil_billy_300ex

hey thanks outacontrol, i will take a good look at it. i was thinking of puting in a new shock. i heard that a stock raptor rear shock would work but im still thinkin about. hey keep that 450r rubber side down eh? lol thanks again.

Mat

Posted by: hellbound250r

Hey Mat
buy an R!!!MMMMMMMMMMM be!acth! I'll look at it fur ya.we gotta git er done for races this summer.

Posted by: roostin_dale

same prob. on mine.

I just tighten it between each moto. Brand new Lonestar twin row and i cant seem to fix it...

Posted by: exkid04

make sure your axle lock nut is tight that happened to me too my axle seized up because of it

Posted by: Xrider06

hey i have a 250x (which has an identical swingarm) and i have a lonestar bearing carrier in mine too but mine is almost too tight to move so i dont know what to tell you. Make sure that you are tightening thos 2 allen head bolts in the back tho. Dont know what else to tell ya. Good Luck

Posted by: Q. O. R.

The 300ex has a problem with that swingarm when you do alot of racing jumping and hard riding. Often the part wrapping around the carrier cracks underneath so no matter how much you tighten it it wont, also they tend to stretch with no sign of cracks.For a quick fix remove your carrier bolts and grind a small amount of matierial from between the upper and lower tightening bands until it is tight on the carrier again. (not a permanent fix and dont do this if its cracked)

Posted by: SRH

this post =suspension forum

Posted by: lil_billy_300ex

thanks everyone, it seems to be keeping tight now, i put new honda bolts and grommets in the swing arm that kinda helped i think, its not moving too much now. oh yes a tip for everyone with a 250x or 300ex. of your chain keeps getting loose and your carrier doesnt move, check your swing arm rod and nut, right behind the motor. make sure they are always tight mine got loose and that bolt bored threw my frame about a half an inch to the front and back. i had to take my frame to a welding shop and they just built up weld on the hole and drilled it to the right size. it works good now. thanks again everyone.

Mat

97 300ex
white bros promeg pipe
works shocks
400ex carb
k&n air filter and jet kit
11:1 piston web racing cam and heavy duty valve springs