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Drivetrain Mounts and Upgrades

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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Powerflex - Corporate Logo
T#:14023858
Part#: PFR5-4030
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NOTE: We suggest replacing 3 of BMW # 31126760203 during installation Kit comes supplied with M14 mounting bolt, thread locker, and a Powerflex keyring. With the newer F8x M2/M3/M4's making big power and having superb chassis straight from the showroom, it's no wonder they're often found at the most serious of track-days or at tuning shops around the globe. Unfortunately, the power that makes these cars so fun to drive eventually has an impact on the vehicles' suspension components- most notably the rear differential bushings. Despite having alloted for two mounting bushings on the factory tubular subframe, BMW opts to use only a single offset bushing in the rear to mount the diff bracket to the subframe. This essentially creates a pivot point for the diff under torque loading, especially if the 4x front diff bushes are worn out and softer than they once were. With hard launches and sudden and frequent on-off throttle changes, the single rear OE rubber bushing is subject to extreme torsional and directional forces, resulting in rapid degradation with failure often seen at around the 30,000-40,000 mile mark, and an unsettled and potentially clunky rear-end. The PFR5-4030 Dual Mount Diff Bracket is made from our in-house CNC machined 6082 High-Tensile Aluminum, and is designed to utilize the secondary mounting position on the OE subframe. With the addition of a second bushing, this prevents the diff from twisting under load, providing benefits such as: Reduced drivetrain movement Improved throttle response A more controlled and consistent chassis response to acceleration/deceleration Improved tire-to-road power transfer due to reduced wheel hop Reduced strain on bushings The corrosion-resistant, satin black, anodized aluminum bracket is optimized for high stress and deflection while withstanding high torque loads, but serves the same purpose in road-use and track-use cars with either a single OE bushing or dual aftermarket bushings. Although the bracket can be fitted without the need to remove the subframe from the vehicle completely, we would strongly recommend combining Powerflex products by using our already hugely popular 80A durometer PFR5-4026 Rear Diff Rear Mounting Bushings for both rear mounting positions alongside our PFR5-4025 Rear Diff Front Mounting Bushings in the front for the ultimate in differential control and a lasting street or track solution.
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Powerflex - Corporate Logo
T#:28104804
Part#: PFF5-4628
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Powerflex's new transfer case bushing insert is made from polyurethane and is designed to reinforce your OE rubber transfer case bushing. This helps to stiffen the bushing and limits excessive movement of the transfer case. This Street bushing is rated at 70A durometer, which is a bit stiffer than your OE bushing's rubber. This is perfect for someone who daily drives their BMW but still wants a bit extra support for their transfer case bushing. As this bushing is 70A durometer, a small amount of extra NVH can be expected.
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Powerflex - Corporate Logo
T#:28104805
Part#: PFF5-4628P
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Powerflex's new transfer case bushing insert is made from polyurethane and is designed to reinforce your OE rubber transfer case bushing. This helps to stiffen the bushing and limits excessive movement of the transfer case. This Performance bushing is rated at 80A durometer, which is moderately stiffer than your OE bushing's rubber. This is perfect for someone who occasionally tracks their BMW and is looking for better performance at the cost of a bit more NVH. As this bushing is 80A durometer, a moderate amount of extra NVH should be expected.
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Powerflex - Corporate Logo
T#:16907150
Part#: PFR5-4024
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$ 333.19 USD
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BMW G8X Rear Diff Front Mounting Bushing (Street) is a high-performance upgrade designed to enhance the stability and control of the BMW G8X's rear differential. This bushing features a robust construction combining CNC-machined aluminum and high-quality polyurethane to provide superior drivetrain support and minimize deflection.

  • Improved Drivetrain Stability: Reduces drivetrain deflection for better handling and control.
  • Enhanced Launch Performance: Minimizes wheel-hop during aggressive starts and hard launches.
  • Durable Construction: Made from black anodized 2011-T6 aluminum and high-strength polyurethane.
  • Choice of Hardness: Available in signature purple 80A durometer or black 95A durometer polyurethane to suit different driving needs.
  • Direct Replacement: Designed as a full bushing replacement for easy installation and improved performance.
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Powerflex - Corporate Logo
T#:34080718
Part#: PFF5-1428P
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The Powerflex Transfer Case Bushing Insert for BMW X5 E70, X6 E71, and X6 F16 is a quick and effective upgrade designed to improve the stability of the transfer case. Made from durable polyurethane, this insert reinforces the factory rubber bushing, reducing excess movement in the transfer case during acceleration and cornering.

Key Features:

  • Material: High-performance polyurethane, offering increased durability over stock rubber.
  • Purpose: Reduces drivetrain movement, improving power delivery and throttle response.
  • Easy Install: Fits into the existing bushing, no full bushing removal required.
  • Longevity: Polyurethane lasts longer, resisting wear from heat and road contaminants.

Ideal for enhancing drivetrain performance without complex modifications.


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Powerflex - Corporate Logo
T#:22064612
Part#: PFF5-224R
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$ 26.34 USD
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In the realm of enhancing your Mini Cooper's performance and ride quality, the Powerflex Upper Engine Mount Insert emerges as a transformational accessory you cannot afford to overlook. This ingenious automotive innovation from Powerflex yields an array of benefits that not only elevate your driving experience but also bolster the longevity of your cherished Mini Cooper. Within this comprehensive guide, we will delve into the key advantages of the Powerflex Upper Engine Mount Insert tailored for Mini Cooper, all while considering essential SEO keywords for your convenience. Elevated Handling and Stability: Precision-engineered by Powerflex, the Upper Engine Mount Insert is purpose-built to curtail engine movement during acceleration, cornering, and braking. The outcome? An elevated level of stability and handling for your Mini Cooper, ensuring a smoother and more controlled driving experience. Suppressed Vibrations and Noise: The Powerflex Upper Engine Mount Insert excels in effectively damping engine vibrations and noise, introducing an unparalleled level of comfort to your ride while effectively reducing the harshness typically associated with high-performance driving. Revitalized Acceleration and Power Delivery: With the Powerflex Upper Engine Mount Insert in place, the engine's power is channeled with heightened efficiency to the wheels. The net result is an amplification of acceleration, swifter throttle response, and an overarching surge in performance. Extended Lifespan for Vital Components: By mitigating engine movements and vibrations, the Powerflex Upper Engine Mount Insert takes center stage in shielding critical engine and drivetrain components from undue wear and tear. This proactive safeguard can extend your Mini Cooper's overall lifespan, translating to long-term savings. Uncompromising Quality and Durability: The Powerflex Upper Engine Mount Inserts are meticulously crafted from premium materials, and painstakingly designed to endure the rigors of daily driving. Their unswerving quality and durability ensure consistent, long-lasting performance. Economical Enhancement by Powerflex: When juxtaposed against more extensive performance upgrades, the Powerflex Upper Engine Mount Insert offers a cost-effective avenue to optimize your Mini Cooper's performance and ride quality, making performance enhancement accessible without breaking the bank. OE / OEM Cross Reference Numbers: OEM Part Number: 22116782374 / 22 11 6 782 374 Fits the Mini models: - R55 - R56 - R61
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Powerflex - Corporate Logo
T#:34114241
Part#: PFR5-524H
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The Powerflex Rear Sway Bar Bushing - 18.5 mm Street for the BMW X3 (2003-2010) is a premium suspension upgrade designed to replace the factory rubber bushings with high-performance polyurethane. This bushing specifically fits rear sway bars with a 18.5 mm diameter, providing better durability and handling for street-focused driving.

Product Features:

  1. The Powerflex Rear Diff Front Mount Bushing - Flat Type for the BMW E38 7 Series and E39 5 Series is a premium suspension component designed to replace the factory rubber bushing in the front mount position of the rear differential. This high-performance polyurethane bushing is engineered to enhance drivetrain stability and improve overall vehicle performance, making it an ideal upgrade for drivers seeking longevity and sharper handling.

    Product Details:

    1. Flat-Type Design: This bushing is built with a flat-type design, which ensures a direct replacement fit for the factory-installed bushing in the front mount of the rear differential. It aligns perfectly with the BMW E38 and E39 chassis, providing an accurate and secure fit without the need for modifications.

    2. Polyurethane Material: Powerflex bushings are constructed from high-quality polyurethane, which offers superior durability compared to traditional rubber. This material is highly resistant to wear, heat, and degradation from oils and road contaminants, ensuring that the bushing remains effective for a much longer period under both normal and performance driving conditions.

    3. Enhanced Drivetrain Control: The rear diff front mount bushing plays a critical role in controlling the movement of the rear differential during acceleration, deceleration, and cornering. Powerflex's polyurethane bushing limits excessive movement and reduces drivetrain flex, leading to more consistent power delivery, reduced differential "clunking," and a smoother, more precise ride.

    4. Improved Handling: By stiffening the front mount of the rear differential, this bushing enhances the stability and control of the rear suspension, particularly during aggressive driving. Drivers will notice a reduction in body movement and improved handling characteristics, allowing for more confident cornering and better overall vehicle dynamics.

    5. Direct Replacement for OEM Bushings: Designed to replace the original rubber bushing without any additional modifications, this bushing fits seamlessly into the existing suspension setup of the BMW E38 7 Series and E39 5 Series. Installation is straightforward, and the bushing is engineered to match the factory specifications while offering a significant performance upgrade.

    6. Long-Lasting Durability: Polyurethane bushings are designed to withstand harsh conditions and prolonged use, far outlasting the OEM rubber components. This bushing resists cracking, warping, and deterioration over time, ensuring that it maintains its structural integrity and performance even after years of use.

    Advantages:

    • Increased Drivetrain Stability: Reduces differential movement, providing a smoother and more stable power transfer to the rear wheels.
    • Better Handling Response: Enhances rear-end control during acceleration, deceleration, and cornering, improving overall vehicle dynamics.
    • Long-Lasting Material: Outlasts rubber bushings, offering a cost-effective, long-term suspension upgrade.
    • Direct OEM Fitment: Simple replacement with no modification required, ensuring an easy installation process.

    Fitment:

    • BMW E38 7 Series (1994-2001)
    • BMW E39 5 Series (1995-2003)

    Key Benefits:

    • Reduced Drivetrain Slack: Minimizes play in the rear differential, eliminating clunks and improving overall ride quality.
    • Durable and Resilient: Made from high-performance polyurethane that resists damage from road debris, oils, and extreme temperatures.
    • Perfect for Daily or Performance Driving: Balances improved handling with everyday comfort, making it a suitable upgrade for both street and spirited driving.

    For BMW E38 7 Series and E39 5 Series owners looking for a reliable, long-lasting upgrade, the Powerflex Rear Diff Front Mount Bushing - Flat Type delivers improved handling, enhanced drivetrain control, and a more responsive driving experience. This is a vital upgrade for maintaining the performance and reliability of your rear suspension system.

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Powerflex - Corporate Logo
T#:33946911
Part#: PFF5-1428
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ake the slack out of your xDrive system. The Powerflex PFF5-1428 insert slips straight into your factory transfer case mount, replacing muddy drivetrain slop with crisp power delivery and long-lasting polyurethane durability.
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Powerflex - Corporate Logo
T#:53997732
Part#: PFF5-1428BLK
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Lock down your xDrive drivetrain for the track. This 95A durometer Black Series polyurethane insert eliminates transfer case rotation, ensuring zero-compromise power delivery and immediate throttle response under maximum load.
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Powerflex - Corporate Logo
T#:16907151
Part#: PFR5-4024B
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$ 333.19 USD
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Powerflex - Corporate Logo
T#:31324224
Part#: PFF5-125P
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$ 205.69 USD
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MINI Cooper R50/R52/R53 Including S - Billet Lower Engine Mount - Performance offers a significant upgrade in engine mount performance, designed to enhance power transfer and vehicle handling. The Performance version combines the durability of Purple 80A and Black 95A materials, providing a 200% increase in stiffness over the original equipment (OE) mount. This upgrade is ideal for more extensively tuned MINI Coopers or those used in mild track conditions.

  • Enhanced Stiffness: Provides a 200% increase in stiffness over OE mounts for improved vehicle response and handling.
  • Durable Construction: Utilizes Purple 80A and Black 95A materials for superior durability and performance.
  • Reduced Wheel Hop: Minimizes wheel hop for a more direct power transfer to the road.
  • Ideal for Tuned Vehicles: Suitable for extensively tuned MINIs or those used in moderate track environments.
  • Minimal NVH Increase: Offers a moderate increase in noise, vibration, and harshness (NVH), mainly at idle, compared to OE mounts.
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Powerflex - Corporate Logo
T#:54281644
Part#: PFR5-325H
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The Powerflex Heritage Series is a premium motorsport upgrade engineered to eliminate critical differential deflection. Molded from an advanced, proprietary polyurethane formula, this bushing stabilizes the differential nose under high-torque loading.
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Powerflex - Corporate Logo
T#:53997743
Part#: PFF5-1526
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Lock down your xDrive transfer case. This polyurethane mount insert slips into the factory rubber voids to eliminate drivetrain deflection, optimizing power delivery and stabilizing the driveline under hard load.
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Powerflex - Corporate Logo
T#:54352762
Part#: PFR5-2025H
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By stabilizing the differential's position relative to the subframe, the rear diff bushing helps maintain static axle angles under extreme loads, reducing wear on peripheral drivetrain components and providing a highly predictable, repeatable platform for track setups.
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Powerflex - Corporate Logo
T#:53997744
Part#: PFF5-1526P
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Eliminate xDrive drivetrain twist. This 80A durometer polyurethane insert slides into the factory transfer case mount, locking down deflection for immediate throttle response and track-ready durability.
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Powerflex - Corporate Logo
T#:54352781
Part#: PFR5-1625H
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Powerflex - Corporate Logo
T#:53997745
Part#: PFF5-1526R
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Stabilize your xDrive drivetrain with Powerflex. This 65A durometer polyurethane insert slides into your factory transfer case mount, eliminating high-torque deflection and optimizing power transfer under heavy loads.
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Powerflex - Corporate Logo
T#:54352763
Part#: PFR5-2025BLK
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The Powerflex Black Series is engineered for maximum performance and minimum deflection