Z4

The E46 chassis has several well-documented structural weak points, particularly at the front subframe engine mount, the rear subframe mounting poi...

Rear subframe failure is a well-documented issue on the BMW E46 chassis, and notably, the E46 M3 did not receive factory sheet metal reinforcement ...

The front subframe of the E46 chassis is a known stress area, particularly around the engine mount pads and control arm ball joint mounting points....

Protect your E46's cast aluminum rear spring perch from damage with our steel Rear Trailing Arm/Spring Perch reinforcements. They're specifically d...

The front control arm ball joint mounting points on BMW subframes are subjected to constant load from braking, cornering, and suspension travel. Ov...

Our E46 front subframe & engine mount reinforcement plates will help prevent cracks or repair cracked engine mounting points on the e46 subfram...

Upgrading to a larger rear sway bar on an E36 places significantly more load on the factory sway bar mounts. Over time, that added stress can fatig...

Upgrading rear shocks or running stiffer shock mounts places additional load on the factory rear shock towers. Over time, that stress can fatigue o...