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- Engineered and tested to work perfectly with stock dampers
Each cap is CNC formed from T6 Aluminium and anodized with grey
Then the intake was changed leaving the tune as it was
this system delivers improved exhaust flow
It's Eibach's legendary spring system that dramatically improves both a vehicle's performance and appearance
GoldenWrench BMW B58 BLACKLINE Performance Engine Cap Set (M140i, M240i, 340i & 440i) M240i (F22 & F23) BRAKING - Engineered and tested toThe upgraded BMW B58 Engine BLACKLINE Performance Cap Set is available in grey, blue or red. Meticulously designed and created in house to the highest precision and quality as seen on Goldenwrench's other products, giving the factory units an all new form factor. We bring to you the newest addition to the BLACKLINE product family for the next generation of M Vehicles. Give the very plain plastic factory oil and coolant caps an upgrade with a brand new
