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Reduce backpressure by eliminating the restrictive catalytic converter in the factory downpipe which results in a faster spool
as these vehicles age
6-cylinder models produced between 1988 and 04/1995
Available in diameters from 19" to 24"
and overall efficiency
HARDRACE BMW 3 Series F30/F20 Adjustable Rear Trailing Arm (Pillow Ball) - 7437 M6 (E63/E64) ENGINE & PERFORMANCE Reduce backpressure by eliminating theThe HARDRACE Adjustable Rear Trailing Arm (Pillow Ball) (part no. 7437) is a direct fit, performance upgrade over the OEM part for the BMW 3 Series (F30) and BMW 1 Series (F20). Precision engineered to tighten suspension geometry, sharpen steering response and improve durability under hard road and track use. Featuring pillow ball (spherical bearing) construction, it offers precise articulation, minimal deflection under load, and consistent geometry
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