http://shrike-mounts.com/ <-- clicky
A guy I work with developed this system.
Check it out.
I've offered to let him use my wr250x to get some measurements from if anyone is interested in what he's selling.
Otherwise, his main focus is more geared towards sportbikes at this time.
I know a few people here have sportbikes so.....
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2008 WR250X
Gearing: 13t - 48t
Power Commander 5 / PC-V
Airbox Door Removed - Flapper glued - AIS removed
FmF Q4
Bridgestone Battlax BT-003rs