Torque Arm vs 4-Link

[Pragmatist]

Lot of good info on this thread, but also some not so good.

Truck arm setups, though not mentioned here, have essentially the same performance disadvantages as Torque Arms. Watch NASCAR. At Sear's Point (Sonoma Raceway) and see how many times the commentators speak of wheel hop in the really hot braking zones. Maybe not an issue for a purely street driven car, but it's a fact. And they break axles ALL the time as a result. Anyone that owns them, and all of the suppliers (which are few), well, you get it.
Most of all, have fun, whatever path you choose will be a good one. Enjoy the hobby, and be well.

I guess it depends on how the truck arm is designed. NASCAR requires truck arms of 38lbs. each. I built composite arms of 12.5lbs. each. Due to their ability to flex I have yet to see brake hop at a track day and I would challenge anyone to build a lighter rear with a live axle.

https://www.youtube.com/watch?v=San17XlQCGM