We've installed a lot of the
Whiteline Watts Links, and in fact tested some of the first production units. We've put them on street cars, autocross cars, track cars, and everything in between.
The Whiteline unit shown above is a work of art. It comes with a new diff cover (which has several side benefits of its own), elastomer bushings (not metal spherical bearings), and an adjustable Roll Center.
Click above for the "wheel cam" video to see axle movement on street tires
in an autocross. Note: This car had an aftermarket tubular BMR Panhard Bar.
Why Is A Watt's Better?
These keep your car's axle from moving around like mad under lateral loads, lower the rear roll center, and give you a linear axle movement under suspension bump travel. There is a lot of benefit from a Watts Link over a PHB set-up, which I detailed
in this post, but they have one downside - cost.
Sure, there are more things to adjust, too, but it really isn't adjusted much once you get the roll center height and lateral location of the axle set. Not every shop understands that, of course, and we have actually fixed installs done at other places. But it isn't hard.
Will it cure axle hop? Dandruff, gout or male pattern baldness? I don't know about all of that. I just know that I have street driven, autocrossed, and tracked with the WL Watts on several cars and they were easier to drive, dead quiet in use, had faster transitions/slaloms, and showed much less lateral axle/tire movement than with a PHB. We've beat on our 2011 GT with a WL Watts for over a year, using 295mm street tires and up to 345mm width Hoosier A6 race tires for a year and it has been great.
Gonna try to sneak out to ECR this weekend and test...
Linear Mode
