Wilbers Performance Suspension may not be the most recognizable name in suspension, but once it's on your bike, you'll know why Sinister Speed Co. has made it our signature suspension sytem for your ride. Our self-leveling and self-adjusting rear shock system is the only one on the market for the ultimate in performance. Years of experience and German engineering has turned the way we look at bagger suspension completely on it's ear. Contact today for your complimentary custom quote.