If you need to buy the full GSC-10, here is a amazon link: http://www.amazon.com/gp/product/B000BFNOT8/ref=as_li_tf_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B000BFNOT8&linkCode=as2&tag=garmin-gsc10-20

If you just need the replacement parts (i.e, GSC-10 without the main sensor), here is a amazon link of that replacement kit: http://www.amazon.com/gp/product/B000L47VYI/ref=as_li_tf_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B000L47VYI&linkCode=as2&tag=garmin-gsc10-20



EXTRA INFO REGARDING THE RUBBER:

Contribution by user bleugray:

"the rubber mount piece is in addition to the one that comes on the sensor itself. you should have removed the one from the unit before sticking the deeper rubber mount to it. they are designed for different frame types. my road bike uses the flat style one that comes preinstalled and my mtb uses the deep groove version."