How a car works

All partsBMW M4 CSLDrivetrainGearbox › Shafts

Shafts

Part of Gearbox · about $900 to replace

What it is

Input and output shafts.

What it does

Carry torque in and out of the gear sets.

How it fails

Spline fretting.

MaterialNitrided steel
SpecInput spline 40 mm
Shafts highlighted on the car

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