Upper A-arm question….

[Krooser]

I see various a-arms sold as 10 degree… 25 degree, etc. Are they referring to an angle built into the upper ball joint socket? If so, where would you use one of these?

Maybe this is an asphalt set-up deal?

[UltimateRaceCars]

Yes, thats the angle of the ball joint holder. Mainly used on asphalt cars with the large amount of dive on the front the ball joints would bind if they werent angled.

[Matt49]

Used extensively on dirt late models also (right front). Without one on some cars the ball joints would be getting bent.

[Krooser]

I've seen some radical camber deals on some LM's… makes sense.

Thanks.