Hot Rods Connecting Rod Bolt Kits HR00221 Hot Rods Connecting Rod Bolt Kits feature a torque-to-yield bolt design that stretches when properly installed, to provide a more consistent clamping force. Includes bolts for all connecting rods in a single engine Fraction of the cost of the O.E.M. bolts After installation, TTY bolts cannot provide the same amount of clamping force and will likely shear or break if reused