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Swaybar Sizes

Odi

Odi

Donating User
For future reference 97-03,

Stock Front - 28mm - Hollow
Stock Rear - 17mm - Hollow

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GMPP Front - 34mm Hollow
GMPP Rear - 19mm Solid

Progress Front - 34mm Solid

Dorman Front - 34mm Solid

SLP Front* - 34mm Solid (35?)
SLP Rear* - 19mm Solid (25?)

BMR/Addco/Speedbuilt/Next Level Front - 32mm - Solid
BMR/Addco/Speedbuilt/Next Level Rear - 22mm - Solid

RAT Front - 38mm - Solid
RAT Rear - 27mm - Solid

Availability of most of these is limited. RAT are no longer made.

Apparently some users reported different sizes for SLP's. I got mine from craigslist so I'm unsure if they're legit SLP's or someone combined a different set.

SomeDudeAtHome said:
So I just received my SLP sway bars from UPS today. The rear bar is definitley NOT 25mm. I'd say it's closer to 19-20mm. I didn't have time to measure them before leaving for work. Also I'd say the front is actually 34mm and not 35. The 35mm bushing I have for it did not fit snug around the bar but had about a 1mm gap. Maybe that's normal and there's suppose to be that much room. I thought it was suppose to be pretty snug around the bar though. If the front is 34mm and the rear is as small as I think I'm going to be returning them and buying other bars.
Click to expand...

SLP's on sale from 3800 report 1 3/8" thick for the Front and 5/8" thick for the Rear Sway Bar.
 
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So does anyone know for sure if the front GMPP is solid or hollow? Seems weird that they would go from hollow rear to solid rear but leave the front hollow.... But then again the front increases 6mm and the rear only increases 2mm so maybe thats why....
 


I kno hes right on the size, I had a hell of a time finding a poly bushing at the time that would fit it
 


with 04+ if i remember correctly u need 97-03 LCA's in order to mount the front aftermarket swaybars. otherwise i think theyre the same, comp g's might have them bigger, not sure. gxp's also a different ball game.
 


Someone should add which ones we can pull out of a junkyard for an upgrade. If I remember correctly some of the other W-body cars came with the GMPP bar...Impala, Monte Carlo?
 
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