When it comes to serious racing you want an item built to withstand high amounts of abuse to prevent failure that could lead to down time and extra cost. Our road race version K-member is designed for the serious racer that exposes their vehicle to more stress than any street car will ever experience. We take are already over-built street K-member and improve it even more by using additional 1.000” tubing and tying together crucial areas. These areas are exposed to more stress from a road race vehicle than a street or drag race vehicle would ever apply. This item weighs in at 3lbs more than our standard version but still maintains a much needed weight savings.