PowerFlex Black Series Rear Beam Mount Bushing - E10

Product Details

In historic racing, vintage rallying, and high-performance track applications, the weak link in the legendary BMW E10 chassis is often isolated to the rear subframe assembly. The factory rubber rear beam mount bushings allow for catastrophic deflection under high cornering loads and hard acceleration. This lateral movement alters your static alignment mid-corner, leading to unpredictable dynamic toe changes, snap oversteer, and lost lap time.

The Powerflex Black Series Rear Beam Mount Bushing Kit is engineered to eliminate compliance at the critical subframe-to-chassis interface. By anchoring the rear beam firmly to the unibody, this upgrade delivers an unyielding foundation, ensuring your suspension geometry remains exactly as calculated on the setup scales.

Technical Performance Benefits

• Zero Geometry Deflection: Molded from Powerflex’s proprietary 95 Shore A durometer polyurethane compound. This ultra-high-modulus material offers an approximate 80% increase in stiffness over fresh OEM rubber, completely mitigating subframe shifting under extreme load.

• Optimized Power Delivery: By stabilizing the rear beam, drivetrain torque is transferred directly to the tarmac. Wheel hop is eliminated, and throttle modulation out of corners becomes instant and highly predictable.

• Motorsport-Grade Engineering: Features precision-machined internal stainless steel sleeves and specialized inner grooving engineered to distribute high-pressure race lubricant evenly, ensuring smooth operation without binding.

• Uncompromised Longevity: Polyurethane resists degradation from track-side chemicals, racing fuels, oils, and intense thermal cycles, maintaining its durometer rating long after rubber components would have failed.

Prop 65 Warning

Product Q&A

Lifetime Replacement

Fits These Cars