Out of curiosity, I just weighed my newly delivered QuadraLink setup. Complete weight in the packaging, with everything except axle brackets, was 89 lb. Subtract maybe 10lbs for packaging, you're at about 80, with about 40 lb of that partially sprung. That seems to me about the total weight of a pair of steel multi-leafs, shackles, and shocks, but less unsprung weight. And obviously, more than a pair of composite leafs with shackles and shocks.
Coils and shocks: 13 lb.
Control arm and panhard mounts: 16 lb.
Control arms and panhard bar: 31 lb.
Shock/coilover crossmember: 29 lb.
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