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BMW - 3.15 ratio (type 220K) gearset for E series rear differential:
$250.00
Least expensive method to increase throttle response in Sport versions ( type 220K) , specifically:
E38 740i / 750i - 2.93 (non-sport) 7% increase in throttle responseE39 540i - 2.81 (non-sport) 12% increase in throttle responseThis unit is bolt-in , exactly like stock with no modifications
