Pretty sure they put the N55 and the N54 together because every single car besides the 1M are all the N55 in 2011.
BMW 3-litre DI twin-turbo (BMW 135i, 1 M Coupe, 335i, 535i, X3 35i, X5 35i, X6 35i, Z4, 640i, 740i)
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2011 AW 135i - DCT - M Package - BMW Performance Suspension Kit - Berk Street Midpipes - Evolution Racewerks FMIC - JB4 - BMS Intake - BMS Downpipes
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