trek rear wheel magnet

[billy192]

hi,
how/where do i get a a magnet to fit on a rear wheel for a Trek its center lock so no bolts
thanks
Billy

 

[Stefan Mikes]

Here?

Tektro SP-SS20 Speed Sensor Magnet for Centerlock Rotor - Trek Bikes (GB)

www.trekbikes.com

 

[billy192]

brilliant thanks Stefan