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Thread: 250SX Rear Shock Options

  1. #1
    bbechtel16 is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    250SX Rear Shock Options

    I Want to upgrade the rear shock on my SX, it is too bumpy, not enough travel, and other such things. I am considering a stock 200X or 350X shock if they will fit fit with virtually no modification. I think the 350X shock will handle the SXs rear weight better since it is made for the larger machine and the SX being shaft drive and such having a heavy rear. But my concern is that it will throw off the SXs center of gravity and degrade my cornering ability if the shock makes the rear sit too high. Hence I am also considering the 200X shock. Now that I think about it I guess the 250R shock is also an option if I can find one for a decent price. Any input greatly appreciated.
    -'86 ATC 250SX: No longer mine... Complete 350X front end, Corbra Megaphone system, 350X carb with UNI dual stage foam & outerwear bolted driectly up, Powroll/Rocky 260cc bore 10.5 to 1 compression piston.

  2. #2
    yeah i dont know
    1985 ATC250R

  3. #3
    als250 is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    None of the above will work w/o mods. I put 350x shock on my sx(had to modify lower bracket on shock to make it work) and it rode rougher than ever! "x" shocks are made to be mounted at an angle(guessing around 45 degrees,where sx are more straight up and down, maybe 10 degrees,again guessing. I'm going to try welding a bracket on top of rear axle housing sometime to see if it will work. That will put shock at closer to same angle as on 350x. You must also watch raising rear of machine as might cause excessive wear on universal. So far as I know a custom shock is only option for us sx'ers now(w/o alot of mods).

    My .02

    Al
    TF03/HASPIN ACRES /BADLANDS SURVIVOR!!! -LIFE IS GOOD!!
    '86 350x (latest addition)
    '85 250sx-200x frt.end,350x bars,plastic tank,3"hub spacers,22x11x10 Fast-Trekkers/.190 Douglas Red Label alum. rims/PRM desert grab bar
    '85 250sx(supertrap exhaust,chrome rims)
    '87 200x(restored)-'85 200x-'84 200x

  4. #4
    Join Date
    Mar 2003
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    250sx rear shock

    has any one tried to put the shock off a 82 250r it is more stright up and down might try this week my self
    proud owner
    5 250sx
    1 250es
    1 82 250r
    1 185
    1 200s trainlng bike

  5. #5
    Join Date
    Oct 2002
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    17,488
    I think were screwed! I too had the 200X setup ant took it off, threw it away. Made a nice bracket to fit in the bottom and had to grind out some material on top for the reevoir hose. They just aren't even close to the proper valving for a mostly vertical mounting. On top of that it's difficult to find a good old X or R shock.
    In still believe Blaster shocks may do it and are certainly available and cheap! But since I lost my job I no longer can machine anything - it's back to cut, heat, braise, weld, bend in the backyard. I am still going to try it but again it must get mounted more like the angled mounting. To angle it back the battery box is in the way - but there is room for it to move up and back. Then the lower mount can move behind or on top of the axle tube like ALS said. And HeeHaw has a good point, find a shock already mounted in that position. But again how well will an 1981 shock work??
    Or move the upper mount forward but to do this the airbox can't be used and you'll have to use a K+N filter or something. I too have a few SX's around here and may just do it that way and call it my racing SX.

    I think we all love the 250 power and automatic and especially the reverse. The bulletproof motor and cam chain are a plus too. Wonder why Honda never made a 250X?? Not that we should go here but if you've ever split an SX case you'd see that if you were or knew a good machinist you could mount a sprocket on there and maybe ravamp the whole thing. Don't shake your head BBR got started somehow didn't they?????

    Back to the shock, for now get a good used SX shock, they work best and are easiest. I am very happt yo hear someone other than me has the desire to have a better SX!!
    All our government does is distract us while they steal from us, misspend our tax $ and ruin our country

  6. #6
    bbechtel16 is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    Thanks for all the replys. Please follow up with your success/failure with different shock setups. If you people are interested in a better SX as Dirtcrasher put it, check out the ATC300ES Bigger Red? thread. Its about putting fourtrax 300 jug (longer stroke, same bore) on a SX/ES.
    -'86 ATC 250SX: No longer mine... Complete 350X front end, Corbra Megaphone system, 350X carb with UNI dual stage foam & outerwear bolted driectly up, Powroll/Rocky 260cc bore 10.5 to 1 compression piston.

  7. #7
    Join Date
    May 2002
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    610
    does the SX have a better shock than a big red? I have a big red that could use a little better ride. Maybe I could swap it.
    Sam from Florida
    1985 BIGRED $ 200X

  8. #8
    Join Date
    Oct 2002
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    I'm not sure if they swap but anyway - the SX shock is marginal at best, but may be better than the Big Red.

    About the 300SX, thats a great idea. But my SX is pretty fresh and I already have to back off before I hit a jump or I'll get moshed. Anyone likes more motor but if the suspension can't keep you straight it sort of defeats the purpose. Still pretty bad though!!!
    All our government does is distract us while they steal from us, misspend our tax $ and ruin our country

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