The best replacement for airbags is hydraulics.

The best alternatives to airbags are rated as following:
★★★★★  hydraulics
★★★★  coilovers
★★★★  springs
★★  add a leaf
★★  seat belts
★★  air shocks
★★  shocks
★  helper springs
★  timbrens
★  weight distributing hitch
★  timbren
★  hydros
★  weight distribution hitch
★  air cylinders
★  leaf springs
★  side curtain airbags
  curtain airbags
  seatbelts
  wdh
  air ride
  lift kit
  side
  airlift
  air bags
  airbags
  supersprings

Your alternative for airbags is not listed? Suggest!
Speaking about airbags, one probably shouldn't forget about shocks.

Other search terms related to airbags and their ratings are:
★★★★★ shocks
★★★★★ leaf springs
★★★★ coilovers
★★★ lift kits
★★★ child seats
★★ car seats
★★ nitrogen
★ torsion bars
★ seatbelts
gooseneck hitch
seat covers
You have in mind a companion for airbags and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of airbags in all years. Click on graph for more.
airbags
hydraulics
coilovers