The unexpected release of so much energy transmitted through the driveline cannot be understated. The result of a malfunction can, in some scenarios, explode the drums or flexplates of a racing car into dangerous shrapnel (see above).
Therefore, the sanctioning bodies rely on the SFI foundation to provide safety guidelines to protect both the racers and the spectators.
The bellhousing and case both remained intact. Shields and blankets also provide similar protection. BTE strongly recommends using some sort of SFI approved safety system in any racing driveline.