2 Here's a last look at the old school slapper bars and stock-type shocks. They were ineffective for our combination with the TCI front clip. The TCI front suspension has limited suspension travel and front-end rise during launch (it's designed for improved handling and steering on the street or road course). Also during launch, the slapper bars promoted spring wrap-up, which caused the rear body to lift instead of squatting to plant the tires. All the while the pinion angle was changing drastically. The Slide-A-Links should eliminate these issues since they are designed, track tested and competition proven to outperform slapper bars.