Currie Enterprises 9-Plus Trac-Lock Differentials

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Transfers power to non-slipping axles through a spring-loaded clutch. This design enables limited slippage, which allows the vehicle to make turns without binding. As torque is applied the pre-load increases the traction.
The 9-Plus Trac-Lock case is stronger than the OEM unit since it boasts features like a Nodular Iron case with extra support material in critical areas. The clutch material is quality Raybestos for long, dependable life.
This 9-Plus product fits all 9'' rearends and is for heavy duty application on heavy duty cars, trucks and off-highway use. This product requires the use of Friction Modifier.