There have been a number of posts on this subject, but no photos of an actual install nor positive/negative comments on before or after performance. So, since I have installed the game changer sprocket on both my bikes, I thought I would post what my results have been thus far.
First a photo of the primary on my 2014 CVO Road King with game changer sprocket with clip on shoe for stock chain tensioner, GMR compensaver, stock A&S clutch with AIM VP-SDR lockup. Both bikes have the exact same setup except I have a Barnett Scorpion clutch with lockup on the 2009 CVO Road Glide.
Second photo is a chart measuring speed versus time on my 2009 CVO Road Glide comparing stock 34 tooth to 32 tooth game changer.
Install: very simple, straight forward, one hour job if you take your time. No special tools other than what you would need for removal of the sprocket in a stock primary, EXCEPT, for the 32 tooth sprocket you will need to make a longer primary locking bar to torque the sprocket bolt. I used 1" x 1/4" flat bar, easy breezy. Also, you will need to recalibrate your ECM so the cruise and 6 gear light operate correctly, but this is easily done in TTS and I assume other tuning tools.
Cost: at $200 online, cheapest, easiest solution versus 49 tooth clutch sprocket or changing trans sprocket, rear drive belt, swing arm mods, etc.
Results: I love it on both bikes, wouldn't go back to stock. Quicker acceleration, easier to find neutral, no abnormal noises, less gear shifting under varying conditions and sixth gear is more usable (not just flat land cruising).
Comments: both of my motors are built for low end grunt as well as high end rpm. The game changer will add 250 rpm to each gear for a given speed, so if your cams start falling off at 4K, this might not be a mod for you. But if this isn't the case, I think you will like it. I am not aware of any downside to this set up including gas milage for those who care.