L.M. Gianetti made these for us and they workd really well with on board Jacks. Image Unavailable, Please Login Image Unavailable, Please Login
JG's next project will incorporate some A-class lightweight jack technology: Image Unavailable, Please Login Image Unavailable, Please Login
GT2 and GT3 cars as well as P 4/5 C have on board systems like that. Not sure if Challange cars do but these stands are very useful if they do.
I'm not sure what you're asking. Generally the on board system gets the car high enough to change all four wheels. These work with that system to get the car higher than that.
Do the inboard jacks come down one by one, or do you need to be really accurate with the placement of these extenders when the jacks are deployed? When I saw them on FB I thought they were trophies too!
I have those for my Porsche racecar. They are available ready-made from Cup Car Solutions...albeit at a price
I think he was asking whether you throw these under the car during a pit stop. Meaning, you have to be very precise, lest one of the onboard jacks miss these jacks. The answer to that is, obviously, 'no.'