They work on any torsion bar 911.
I'd def. recommend going for the 19mm raised version, but be aware they will be a tight fit with 15" wheels. Totally worth it. Even with the 19mm raised spindles I had to use 42mm of shims on my bumpsteer adjustment:
Quote:
Originally Posted by Jonny042
Just finished doing bumpsteer measurement and adjustment on the front end - been putting this off for a while but finally dug in.
What actually triggered the whole exercise is that I did a slight ride height adjustment in front, raising the ride height maybe 3/4". I measured the toe before and after and couldn't believe my eyes - I gained 3/16" of toe-in just raising the front that little bit!!
After finally settling on a front ride height of 151mm (measured the factory way but accounting for the 19mm raised spindles) I marked a line on the front bumper and backed the ride height adjustment so I could raise and lower the car around ride hieght and measure the toe changes.
I played with some pretty coarse adjustments and finally honed into doing 2mm of shim changes at a time. All I can say is WOW. A much smaller increment than I thought can make a measurable difference!!!
The picture above shows all the shims in place during one of the "extreme" tests. Ultimately I ended up with 42mm being the magic number for total spacer height. My final check was to run the suspension through 2-1/2" of travel (1-1/4 above and below ride height) and have no measurable difference in toe. |