Have you already purchased this flashlight and want to make it do double duty?

If not, go to fenix-store.com and look at their P2D CE Q5 Cree and Rebel versions and the bike mounts they offer. The twofish mounts are good.
https://www.fenix-store.com/product_...roducts_id=362
https://www.fenix-store.com/product_...roducts_id=333
https://www.fenix-store.com/index.php?cPath=25_66

Here are lots of ideas from mounts. You will have to know diameter, I only saw the length on the specs.
http://nordicgroup.us/s78/flashlights.html