The later units are dual mass flywheels, where the clutch damping is taken out of the clutch disk (partially) and the flywheel is made in two parts to pick up the slack (per se). This is done because it creates a smoother engagement at the expense of high RPM tolerance and gross strength. A stock dual mass flywheel will usually come apart aroundabouts 8k pending age and 500hp. Don't reach those levels? The dual mass will give you a smother engagement and better overal ride quality.

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1993 190E 2.6 Sportline