Ive been running the flexaform rear leafs on the street,road course and auto xing for about 12 years now with no problems.I guess in extreme cases fiberglass can crack ,but it wont fatigue.
Its just a different way of attaching the sway bar end links,and allows for "some" adjustability of the bars rate.This is a custom 1.25"dia bar made by sainer engineering in fla.I dont know if they are still around though.John Sainer was an engineer for addco he had the blueprints to make the a...
Very good quality and the owner Dick Ross is very nice to deal with.They also race what they sell.I have his upper arms and I opted for the nylon lca bushings and greasable shafts.I modified his upper arms by my own choice to fit adjustable rod ends for increased adjustability and zero...
Firm feel makes a very strong upper arm,very good quality.Speak to Dick Ross,he is the owner.I have them on my car.I run about 1.5 deg neg camber and about 6 deg pos caster with them.
http://www.firmfeel.com/tubuca_a.htm
justin