Driveshafts

Driveshafts are long, cylinderic tubes with splines on the end that connect the transmission to the rearend. This allows for the rearend to turn, and essentially is a link to making your car actually move. Many people select aluminum driveshafts because they are cheap, free up a little HP, but most importantly, they smooth out the revs of the engine. Carbon fiber driveshafts are also available; these are stronger and offer the same abilities that aluminum ones do. However, these are four times the price of an aluminum one.

Driveshaft Safety Loops

Driveshaft loops are required by NHRA tracks when a car runs 13.99 or quicker in the 1/4 mile. Driveshaft loops prevent the driveshaft from possibly killing a person. If a driveshaft were to fail without a loop, the driveshaft could bounce on the road, hit the trunk and possibly come into the cabin. A driveshaft loop contains the driveshaft so it cannot touch the asphalt if it were to fail.