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giving the factory units an all-new form factor
Meticulously designed and created in house to the highest precision and quality as seen on Goldenwrench's other products
BMW F21 M135i (2012–2016)
Crafted with precision
that’s why the Viton® valve seal kits are used on both the intake and exhaust valve seals
Powerflex BMW M2/M3/M4 Dual Mount Rear Differential Bracket (F80/F82/F83/F87) Bola Alloy Wheels giving the factory units anPowerflex BMW M3 M4 Dual Mount Rear Differential Bracket replaces BMW's factory single bush bracket that promotes excessive wear on the rear subframe to diff bush. This design is very flawed as is creates a pivot point for the diff under torque loading. With hard launch starts and sudden and frequent on off throttle changes, this puts the single rear OE rubber bush through extreme torsional and directional forces, resulting in accelerated ageing with
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