Drivetrain Mounts and Upgrades for BMW F80 M3 S55 3.0L

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From the factory, engine and transmission mounts are rubber and thus a wear component. Worn out engine or transmission mounts create sloppiness and a disconnect between the driver and your BMW's powerplant. If your vehicle is purpose built for the track, we recommend solid engine and transmission mounts. These have zero deflection, but come at the expense of added NVH (noise, vibration, and harshness). Poly engine and transmission mounts offer a good balance between OEM rubber and solid mounts for those with mixed purpose vehicles, offering great performance and connection with little sacrifice in terms of NVH.

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ECS - Corporate Logo
T#:589057
Part#: 026696ECS03
In Stock
$ 115.99 USD
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$ 115.99 USD
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Upgrade your drivetrain performance with ECS Tuning Performance Polyurethane Differential Bushings—engineered specifically for BMW F8x/G8x models and designed to deliver superior power transfer, durability, and driving precision.

Factory rubber differential bushings are built for comfort, absorbing vibrations between the differential and chassis during everyday driving. However, they are a known wear item that degrade over time—especially under spirited or aggressive driving conditions. Many F8x/G8x owners experience premature cracking and wear, leading to excessive drivetrain movement, reduced throttle response, and unwanted wheel hop.

ECS Tuning’s in-house engineered polyurethane differential bushings provide a high-performance solution to these common issues. By significantly reducing drivetrain deflection, these upgraded bushings enhance throttle response, improve handling stability, and minimize wheel hop—resulting in a more connected and controlled driving experience.

Constructed from durable 95A durometer red polyurethane and paired with precision CNC-machined 6061-T6 aluminum sleeves, these bushings are built to withstand extreme driveline forces while maintaining street-friendly comfort. Unlike solid or delrin mounts, ECS polyurethane bushings strike the perfect balance between performance and daily drivability—delivering increased rigidity without excessive noise, vibration, or harshness (NVH).

Whether you're carving canyon roads, launching at the drag strip, or simply commuting, these performance differential bushings ensure more efficient power delivery from the differential to the wheels—giving you better throttle modulation, traction, and overall control.

Key Features & Benefits:

Performance polyurethane differential bushings for BMW F8X models
Reduces drivetrain movement and improves power transfer
Enhances throttle response and minimizes wheel hop
95A durometer polyurethane for optimal balance of performance and comfort
CNC-machined 6061-T6 aluminum inserts with Type II black anodizing for corrosion resistance
Resistant to oil, chemicals, ozone, and road salt for extended service life
Designed to handle high torque loads and extreme driving conditions
Engineered using real-world load data and worst-case operating scenarios
Maintains street-friendly NVH levels compared to solid mounts
Replace worn factory bushings with ECS Performance Polyurethane Differential Bushings and experience tighter handling, improved drivetrain response, and long-lasting reliability.

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ECS - Corporate Logo
T#:589549
Part#: 26696ECS09
In Stock
Sale - Save 25% $ 437.99

This product was last offered at the strikethrough price on
06-14-2026

$ 328.49 USD
Free Shipping
Sale - Save 25%
$ 437.99

This product was last offered at the strikethrough price on
06-14-2026

$ 328.49 USD
Free Shipping
Differential bushings are responsible for keeping your rear end planted during the delivery of power to the rear wheels. As these bushings age, they wear out and should be replaced. If you ever see your bushings are cracked, it is time to replace them. By eliminating the drivetrain deflection that factory rubber bushings permit, throttle response is improved, and the tendency for a car to “Wheel Hop” is significantly reduced. Upgrade to ECS Poly Diff Bushings and feel the difference!
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Genuine BMW - Corporate Logo
T#:389827
Part#: F8XMRSUBBOLTS
Ships in 3 Business Days
$ 201.99

This product was last offered at the strikethrough price on
07-08-2026

$ 200.99 USD
Free Shipping
$ 200.99 USD
Free Shipping
The rear subframe bolts on the M2/M3/M4 are one-time use only and need to be replaced any time they are removed, such as during a diff install, sway bar install, bushing replacement, or any time the subframe is removed. Re-using the original bolts may damage the threads inside the body so make sure you have new M2/M3/M4 subframe hardware on hand for any work.
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Genuine BMW - Corporate Logo
T#:211523
Part#: 22112284818
In Stock
6% off MSRP $ 186.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 174.99 USD
Free Shipping
6% off MSRP
$ 186.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 174.99 USD
Free Shipping


Genuine BMW Rubber Mounting Right -
This item fits the following BMW Chassis:
F80 M3,F82 M4,F83


Genuine BMW - Corporate Logo
T#:556416
Part#: F8XMDMKT
Ships in 3 Business Days
$ 534.99 USD
Free Shipping
$ 534.99 USD
Free Shipping

Drive line slop is often caused by faulty engine and transmission mounts. This can result in knocking noises under heavy acceleration, excessive vibration, and a less responsive feel in power. These Genuine BMW mounts are perfect to eliminate these problems and provide long lasting reliability.

Included in this kit:

Genuine BMW Engine Mount (left & right) Genuine BMW Transmission Mount (x2) Genuine BMW Installation Hardware (x6 bolts, x6 nuts)

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