Advan GT Beyond 18X9.5 / +22 Offset / 5-120 BC / +22mm Bore / Machining & Hyper Platinum Black 2021-bmw-m440i-xdrive-esi5507051 The ring gear teeth are

The ring gear teeth are integrated onto the flywheel unlike an aluminum flywheel where the ring gear is pressed onto the flywheel and has the possibility of separating from the flywheel due to the different expansion coefficients of aluminum and steel

WMI flow gauges

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Wilwood Mopar Compact Tandem Master Cylinder Kit w/ Combination Valve & Pushrod 15/16in Bore - Black

Advan GT Beyond 18X9.5 / +22 Offset / 5-120 BC / +22mm Bore / Machining & Hyper Platinum Black 2021-bmw-m440i-xdrive-esi5507051 The ring gear teeth areAdvan GT Beyond 18X9. 5 +22 Offset 5x120 BC +22mm Bore Machining and Hyper Platinum Black