Was thinking of getting the Full Traction rear sway bar, will this control rear axle hop better and make the Jeep more stable on-road in the back?

 

There's no small amount of science in suspension design.

Thicker sway bars increase roll stiffness. They tie the chassis/frame to the axle, limiting body roll. I would prefer adjustable links, which allow you to preload the sway bar so that you can tune roll stiffness as you prefer. The downside to a larger diameter bar is reduced suspension travel and a stiffer ride.

If you don't have a lift of around 4" or greater with heavy-weight tires (35" or larger), I'd look to see if I could find adjustable links instead. You can then preload the bar in either direction. If you have a stock suspension, a BB lift and tires smaller than 35", I think that you'll find that the increased roll stiffness will cause rear axle to be even more bouncy. Just remember that a sway bar IS a spring (torsion spring).

Thinner, lower rate sway bars will generally have the opposite effect.

Other ways to control axle hop include shock rebound valving. Investigate adjustable shocks.

 

Which way or preloading increases the stiffness? The longer the sway bar link the stiffer?

 

I know what you mean on the two door and yes our rear sway bar will fix is issue. I installed it on mine and it was a very noticeable difference. It will not decrease flex or make your ride stiffer. It simple does not let the back end feel like it's coming around.

We have three adjustment points so you can decide on how stiff you want the new sway bar.

The product description hits it dead on

Full-Traction now offers a replacement 19mm rear sway bar for use on Jeep JK models that are equipped with a lift kit or used while heavily loaded. The new bar is a bolt-in replacement for the stock bar. It provides increased roll stiffness through its larger diameter and is designed to reduce understeer/bodyroll while still being flexible enough for severe off road use. Recommended for all lifts of 3" and over. Comes complete with urethane pivot bushings and complete installation instructions.

 

How do the adjustment points work? There is something you can turn to adjust? Can I reuse the stock links on your sway bar?

 

There's three holes on the side of the sway bar, it works on leverage, the closer to the bar the stiffer the sway bar will be. I have my two door on the stiffest setting.

 

Here's a shot, sorry it's dark but you get the idea

 

Thanks for the pic. Can this sway bar be used on a stock JK?

 

We recommend it for lifted JKs but I don't see why it can't be used on a stock JK.

Theses are in stock ready to ship.

 

Thanks!