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The Dinan underdrive pulley retains the factory harmonic crankshaft damper
Muffler - XR-1 Race Line - 3 in Center Inlet - 3 in Center Outlet - 16 x 4
Dinan stops the flex by replacing the rubber bushings with Teflon-lined machined steel rod ends that significantly reduce pliability while also swapping out the OEM curved bar with a stouter billet aluminum arm
Heat is the enemy of performance
testing made it painfully obvious that cooling was going to hold an even more vital role on the F8x (S55) platform to achieve maximum results
Dinan High Capacity Oil Cooler System - 2011-2013 BMW 135i Brake Kits The Dinan underdrive pulley retainsControlling operating temperatures becomes even more significant when you consider increasing boost pressure which in addition to added power output also generates more heat. Recognizing the significance of this issue, Dinan set out to develop a more efficient heat exchanger, ultimately in the form of a High Capacity Oil Cooler. The Dinan High Capacity Oil Cooler provides literally twice the volume of the stock unit, as well as 414 sq. in. of cooling
