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Larger 85mm Throttle Body Bore for Maximum Airflow
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we can offer you a wide variety of sizes
Because the S54 requires a much more robust oil cooling system than the E36's S52
(COMPLETE KIT WITH BOLTS AND 2 O-RINGS)
Borla Universal Muffler(401383) 1400 Larger 85mm Throttle Body BoreThe compact diameter of these mufflers make them great for both classic and late model cars with ground clearance issues. Sound is attenuated with the Borla patented Multicore design and high temperature continuous filament fiber (CFF) acoustic material, without losing any horsepower or torque. 100% welded construction for strength. Built with T 304 stainless steel they have unequaled durability and great looks that you can polish to a mirror like