The ATI Ultra Bell is a precision-engineered bellhousing crafted from natural aluminum, designed specifically for Chevy V8 engines paired with TH350 or TH400 transmissions. Certified to the rigorous SFI 30.1 safety standard, it ensures maximum protection and durability for derby. Each unit requires the use of a 350 torque converter, optimizing performance and reliability on the track. At Total Tilt Derby, we proudly offer this essential component to enhance your build with trusted quality, backed by our commitment to custom orders and expert service. Elevate your derby setup with the ATI Ultra Bell, tailored for champions who demand both safety and performance.