Aluminum Suspension parts?

[buzzracer78]

What are the advantages? Weight? Stiffness?

Are they as durable as the stock plastic? The stock seem pretty durable and "give" some without breaking?

 

[atom3624]

Its a personal choice.
Some parts - steering knuckles, suspension braces, shock mounts, engine mounts, gear mounts - can be sufficiently stronger to permit 'bashing' / racing where not considered with plastic parts.
Some parts are pure bling - arms for example are probably better a bit flexible - plastic / nylon, but LOOK much better in alloy. A big hit and the plastic might flex and return, or might break. The alloy might 'gash', nothing might happen, or it will bend.
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Generally alloy is considered stronger than plastic, but adds weight so requires a suspension, transmission and engine rethink.
Al.