GMTmoto GS LightMount $149.00 
new design lower price!

Update!
The new LightMount is finally here! This is a new design that solves the problem of the wider fairing of the Adventure. It now should work on all R bikes with stem-mount turn signals, with all OEM and most aftermarket windshields.

The GMTmoto LightMount holds a set of the 510/910 PIAA's on the GS Adventure, and the 510/910/540 and Hella FF200 on the standard R1150 GS and R1150 R in perfect position without any ugly extra mounts. The mount is super clean, because it replaces the OEM turn-signal post and doesn't require any drilling or other funny business. PIAA 520s will also fit, but only in an inverted position. Any 10mm post mount light will fit, as long as it clears the fairing. A fairing on an R1150R will require inverted mounting, and creating a little extension to keep the lights from hitting the oil coolers. See the gallery for pictures of one example.
Download Installation Instructions. (1.3 MB, large file!)

Versatile!
If used in conjunction with the LightBar, the LightMounts can only be mounted upright. GMTmoto LightMounts are available for sale on-line, at adventurersworkshop.com (Check them out for stuff for other bikes as well, including KTM,) cyclegadgets.com or in-person at BMW of Denver in Aurora, CO.