Cognito Rear Sway bar.

GMC 08

Member
Aug 2, 2010
40
0
6
St. Charles, MN
Anyone know the dimensions of cognito rear sway bar or Helwig? Diameter? Length of the arm? Thinking of fabbing up my own. $500 for the cognito kit seems way over priced. Thanks!
 

RPM Motorsports

smokinum
May 13, 2008
3,271
10
38
Central Valley Ca.
Iirc its 1 1/4" for both, I'll need to check tomorrow when I get in if I remember. Helwig manufactures for Cognito but with a proprietary "over the frame" design for Cognito. The over the frame is sweet on lifted trucks, it clears aftermarket exhaust ect as well.
 

N2BRK

Well-known member
Dec 31, 2009
2,059
391
83
I often wonder how she handles for spirited driving with a rear sway bar. I know that pushing her in a corner with a little throttle gives oversteer on mine, so why make it worse with a sway bar in the rear? I can see a stiffer one up front though perhaps. Can someone explain?
 

moparkxracer

Well-known member
Jun 25, 2010
2,309
33
48
Out and about
I have Helwig front and rear on mine. It has NO body roll, the rear is 1 1/4. Front is 1 1/2, they say do not run the rear without running the bigger front one.
 

c20elephant

C20ELEPHANT
Apr 25, 2013
2,065
0
0
Phoenix, Arizona
I have 1-1/2" front and rear on my truck from Roadmaster, the rear is from the EV package and had to rotate it and add an extension to one side.

With the longbed extended cab the body roll or what I thought was body roll was frame flex. Soooooo I bought a used under bed B&W 5th wheel hitch, added some extra bolts and that took care of the frame flex.

The truck used to be a little uneasy at 100mph, after installing the hitch and coming back from Wikenburg last month I passed a semi and looked down at the speedo and was cruising at 120, whoops....

I have a set of McGaughys spindles to maintain the stock front geometry not installed yet and a set of 2" drop hangers at the front of leaf springs and shackles that'll give me about a 2-4 drop and be done with the suspension other than rebuilding it at some point.




Adding about 300lbs near the tailgate also makes a substantial difference..
 
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GMC 08

Member
Aug 2, 2010
40
0
6
St. Charles, MN
I just installed a Helwig on the front. It's 1-1/2" solid bar.

Can one of you measure the length of the arm on the rear sway bar? That dimension will determine how stiff the it will be. I'm guessing it's about 16" or so?!?