Originally Posted by cdelong
Ron,
I thought the MRX-4 and 4R upper a-arms were narrower because the 4 series has an adjustable wheelbase, although I see that you could possibly use the extra clearance to drastically alter caster angles.
Hi Corey,
It's correct, the MRX-4 and 4R upper a-arms are narrower (than of the MRX3) because of both reasons you cited.
I just mentioned it on the last post because we had some guys asking if the Front Upper arms in the MRX-4R kits are of the MRX3. They are actually new Arms.