So I have a 2011 Yamaha Stryker bone stock with only a 1000 miles. Anyways after careful research and a few youtube videos I decided to buy a Cobra Powrflo on my bike. WOW....The bike has some nice low end and it really gets moving when I am snapping the throttle back in the gears. I have a pulley to put on there and next and final step is picking the right exhaust. Anyways, I highly recommend anyone of you guys to get this intake and not to mention it looks really nice. I got the Chrome version for my bike.