BMW F82/F83 M4 Street Performance Dual Mount Differential Bushing Reinforcement Kit – Enhanced Stability, OEM+ Comfort & Improved Handling Precision | Fits 2015–2018 (S55 Engine)

Bring balance to performance and comfort with the BAVMODS® Dual Mount Differential Bushing Kit (Street Performance Edition) — a precision-engineered 

Upgrade your M4’s rear-end stability and driving precision with the BAVMODS® Street Performance Rear Axle Reinforcement Kit, designed to strengthen the factory subframe and differential mounting points while maintaining OEM+ comfort.

The factory rear axle design in the F8X chassis allows for noticeable flex under acceleration and cornering, which can cause delayed throttle response, drivetrain movement, and inconsistent rear traction. The BAVMODS® system replaces those weak points with reinforced performance-grade rubber bushings and a CNC-machined billet aluminum bracket, improving chassis rigidity without introducing harsh noise or vibration.

Perfect for daily-driven M4s or performance builds that see both street and spirited driving, this kit transforms how your car puts power to the ground — delivering a smoother, more planted, and more confident driving experience in every condition.

Engineered for OEM+ Feel and Long-Term Strength

Unlike solid metal race bushings, this Street Performance setup uses high-durometer rubber bushings that balance stiffness and comfort. The design eliminates excess drivetrain play while preserving the refined ride quality that BMW’s M division is known for.

The billet aluminum reinforcement bracket redistributes torque loads evenly across the subframe, reducing flex and enhancing power transfer during launches, corner exits, and aggressive shifting. The result is sharper rear-end stability, improved throttle precision, and better control under load — all while maintaining everyday livability.

Key Features & Benefits

• Reinforced Dual-Mount Design – Strengthens the rear subframe connection for improved torque stability and chassis rigidity.
• Performance Rubber Bushings – Stiffer than OEM for improved response, yet comfortable for daily driving.
• OEM+ Comfort Level – No significant increase in NVH; perfect balance between comfort and control.
• Improved Power Transfer – Reduces drivetrain flex and ensures consistent traction during acceleration.
• Billet Aluminum Construction – Lightweight, corrosion-resistant CNC-machined components for lasting performance.
• Direct Bolt-On Installation – Fits using factory mounting points; no cutting or modifications required.
• Enhanced Handling Precision – Keeps rear geometry stable for more predictable cornering and improved feedback.

Perfect For

• Street and weekend-driven M4 builds
• Tuned vehicles needing stronger rear-end support
• Enthusiasts seeking better control without sacrificing comfort

FITMENT:

BMW M4 – F82 Coupe (2015–2020)

BMW M4 Convertible – F83 (2015–2020)

Compatible with S55 Twin-Turbo Inline-6 Engine

Direct bolt-on installation using factory subframe mounting points.

Please refer to the “Fitment” section in the product description for compatibility details.