SPL Parts 2012+ BMW 3 Series/4 Series F3X Rear Upper Control Arms Engine Components>Hardware Kits - Other This filter's inverted top makes

This filter's inverted top makes for more surface area

car-like shift characteristics

The system features BORLA®'S Polyphonic Harmonizer Technology which utilizes patented units that contain pipes of different diameters and lengths to create multiple exhaust notes that harmonize to deliver a clean

0 Liter ATX

The 3" diameter Borla(r) Cat-Back(tm) system has a side exit (passenger side) featuring the classic S-Type sound level with no drone inside the vehicle

SPL Parts 2012+ BMW 3 Series/4 Series F3X Rear Upper Control Arms Engine Components>Hardware Kits - Other This filter's inverted top makesBMW F2X F3X Series Rear Upper Arms (RUA) greatly increase the range of rear camber adjustment for high performance track street applications and are a must for lowered cars to meet alignment requirements. The adjustment range provided by the eccentric washer on the OEM control arm is insufficient to get camber back into proper spec. Our Rear Upper Links feature gun drilled 2024 Aluminum center links, clamps, and clevises, along with Blue Anodized