<strong>12. </strong>If we were only using this truck off-road, we would not have added the stiffer Hellwig front sway bar (we probably would have ditched any bar entirely). But this is a multi-use truck that needs to handle well on pavement—especially when towing. That’s why we complemented our truck’s new leaf-spring setup with a Hellwig air bag kit. Not only does an air bag kit help minimize trailer and rear end sway when towing, it also increases the rear suspension’s spring rate, allowing a truck to tow heavy loads better, and with a more leveled-out rear end.