Differential Height

Diff height is usually adjusted when changing the ride height, and the purpose is to keep the driveshafts close to level when the car is at its resting ride height.

Lower diff height

• Allows higher ride heights
• More stability in bumps
• Increases corner speed on open tracks
• Keeps axles level on low-grip tracks with higher ride heights

Higher diff height

• Better for jump landings
• Keeps axles level on high-grip tracks with lower ride heights

The height is usually adjusted using spacers or bushings that house the bearings that support the differential, but sometimes are adjusted by spacers under the differential housing.