The best replacement for magnaflow is flowmaster.

The best alternatives to magnaflow are rated as following:
★★★★★  flowmaster
★★★★  borla
★★★  dynomax
★★  gibson
★★  flowmaster f150
★★  flowmaster mustang
★  walker catalytic converter
★  flowmaster dodge ram
★  corsa
★  flowmaster silverado
★  flowmaster louder
★  flowmaster camaro
★  mbrp
★  cherry bomb glasspack
★  greddy
★  cherry bomb
  flowmaster mufflers
  banks
  bassani
  flowmaster 40
  pypes
  glasspack
  walker
  flowmaster jeep
  thrush
  dynomax ultraflow
  flowmaster dodge charger
  magnapack
  flowmaster exhaust
  flowmaster tundra
  flowmaster tacoma
  invidia
  hks
  flowmaster mustang gt
  slp
  dynomax mufflers
  flowmaster sound
  loudmouth
  magnapacks

Your alternative for magnaflow is not listed? Suggest!
Speaking about magnaflow, one probably shouldn't forget about x pipe.

Other search terms related to magnaflow and their ratings are:
★★★★★ x pipe
★★★ resonator
★★★ glasspack
You have in mind a companion for magnaflow and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of magnaflow in all years. Click on graph for more.
magnaflow
flowmaster
borla