Differential Spring 1.8mm

1.8mm differential spring for Rush SR limited-slip differential. This Belleville spring provides preload force that controls the locking characteristics of the LSD clutch pack.

The Rush SR uses an adjustable limited-slip differential with multiple spring options to tune locking behavior. Spring thickness determines preload force - thicker springs provide more aggressive initial locking, while thinner springs allow more wheel speed difference before the differential locks. The 1.8mm spring is one of several thickness options available for differential tuning.

Changing spring stacks allows teams to adjust how the differential behaves during corner entry, mid-corner, and exit. More preload (thicker/more springs) creates more consistent power delivery but can make the car push in slow corners. Less preload (thinner/fewer springs) allows more inside wheel slip for rotation but can create inconsistent power application.

This is an OEM tuning component used in differential setup and rebuilds.