The best replacement for spd is look.

The best alternatives to spd are rated as following:
★★★★★  look
★★★★  autism
★★★★  adhd
★★★  spd-sl
★★  crank brothers
★  look pedals
★  dino thunder
★  asd
★  spd sl
★  speedplay
★  spd-sl pedals
★  aspergers
★  spd sl pedals
★  asperger's
★  pgp
★  egg beaters
★  sbc
★  tvss
  dekaranger
  mystic force
  sensory processing disorder
  round ligament pain
  road cleats
  atac
  road pedals
  flat pedals
  sid
  eggbeater
  spd-r
  sl
  egg beater
  clipless
  early labour
  3 hole
  flats
  power rangers dino thunder
  9 spd
  spd r
  power rangers mystic force
  toe clips
  cleats
  ninja storm
  5 spd
  pdd
  mtb

Your alternative for spd is not listed? Suggest!
Speaking about spd, one probably shouldn't forget about speech delay.

Other search terms related to spd and their ratings are:
★★★★★ speech delay
★★★ road shoes
★★★ dino thunder
★ breech baby
You have in mind a companion for spd and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of spd in all years. Click on graph for more.
spd
look
autism