The Giant Contact Aerolight stem must be the newer stem with the wider spaced apart bolts at the top of the faceplate and the closer spaced apart bolts at the bottom of the faceplate. If your aerolight stem is not this one, this mount is not compatiable.

We've sourced these custom CNC aluminium mounts from around the world. Made from solid aluminium, these mounts are both lightweight and durable. Available in a range of different shapes and sizes to suit various different stems.

Mount your Garmin or Wahoo device in front of your 3T ARX II Stem.
Also underneath is a GoPro lug to attach a wide variety of cameras and lights. 

Specifications
Attach to front of the stem, replacing the lower bolts
Fits regular size GPS computers 
GoPro lug underneath for extra versatility
Includes 2 replacement longer stem bolts 

Mfr Claimed Weight
39g

Note: Computer and stem are not included.