Lloyd’z Thunderstroke 558 CamThe perfect overall choice for 111" Thunderstroke Motors, giving smooth rideability and crisp throttle responsiveness. These cams also work great in 116" Touring bikes, producing more low and mid range power than Indian STG III cams, the 558's are a great fit for low to Mid RPM cruising, roll on power and economy. A proper tune is needed to maximize power, economy and throttle response. See an Authorized Lloyd'z Tuning Center for all your tuning needs