Dana has unveiled a new Spicer Dura-Tune center bearing for downsped drivetrains, and a Spicer Trac-Lok limited slip differential for medium-duty trucks.

The Spicer Dura-Tune center bearing, available on Spicer SPL driveshafts and heavy-duty Spicer 10-Series driveshafts, is designed to isolate and dampen vibration in downsped applications. It also reduces noise and harshness levels associated with the higher drivetrain torque stresses and vibration frequencies created by engine downspeeding and chassis lightweighting.

The Dura-Tune can replace the current standard SPL and heavy-duty Spicer 10-Series center bearing assemblies, as well as competitive products, Dana announced.

The Spicer Trac-Lok limited slip differential is designed for S140 single drive axles, which will be available this June for medium-duty trucks. Dana said it provides improved traction during unexpected wheel-slip events. No switches, wires, sensors, air hoses or manual driver input are required.

During a slip event, the unit automatically sends about three times more torque to the high-traction wheel end. It then returns to normal wheel end differentiation as conditions change, to provide maximum vehicle handling.