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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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Street Density Transmission Mount - Sold as Set of 2
2X Entries Into Our F80 M3 Sweepstakes
034Motorsport - Corporate Logo
T#:24079616
Part#: 034-509-4062
In Stock
Sale - Save 10% $ 25.00

This product was last offered at the strikethrough price on
08-17-2026

$ 22.50 USD
Free Shipping
Sale - Save 10%
$ 25.00

This product was last offered at the strikethrough price on
08-17-2026

$ 22.50 USD
Free Shipping
Designed with both comfort and performance in mind, the Street-Density line from 034Motorsport is the perfect choice for the OEM+ enthusiast. These mounts feature high-durometer rubber construction to keep NVH low. However, they do not utilize the same fluid-filled technology as the factory mounts, eliminating all slop to deliver power more efficiently.
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034Motorsport - Corporate Logo
T#:568474
Part#: 034-509-0064KT
In Stock
$ 210.00 USD
Free Shipping
$ 210.00 USD
Free Shipping
Collapsing and worn engine mounts can mean big trouble for BMWs. The stock mounts are filled with fluid that can leak or evaporate over time. That leaves the mount unstable and too flexible to properly support the engine. The side effects of a worn engine mount are: shaking and vibrating engine, driveline twist from engine torque that can break or snap bushings, and broken motor mount arms and bolts. If you're tired of replacing engine mounts you'll be very pleased with these solid rubber versions. Not only are these more reliable than stock fluid-filled mounts, they are slightly stiffer than new stock mounts thanks to a solid rubber construction (no voids in the rubber) but designed for street use so they remain quiet and comfortable. The solid rubber has less deflection than a stock mount, so no wasted engine motion. Less wasted motion gives you more torque to the wheels (it's not spent twisting the engine) and better engine response.
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034 Density Line Upgraded Transmission Mount Set
2X Entries Into Our F80 M3 Sweepstakes
034Motorsport - Corporate Logo
T#:389755
Part#: 034-509-4050-SD
In Stock
$ 66.00 USD
Free Shipping on orders $49 and up
Key Benefits:
  • Manufactured from high-durometer 60 Durometer Rubber
  • Reduces drivetrain slop for enhanced performance
  • Provides crisper shifting and more direct power transfer
  • Minimal increase in noise, vibration, or harshness (NVH)
  • Complete drop-in replacement for factory transmission mounts
  • Ideal for use alongside upgraded engine mounts
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    034Motorsport - Corporate Logo
    T#:389756
    Part#: 034-509-N5X
    In Stock
    $ 330.00 USD
    Free Shipping
    $ 330.00 USD
    Free Shipping

    Collapsing and worn engine mounts can mean big trouble for N52/N54/N55 cars. The stock mounts are filled with fluid that can leak or evaporate over time. That leaves the mount unstable and too flexible to properly support the engine. The side effects of a worn engine mount are: shaking and vibrating engine, driveline twist from engine torque that can break or snap bushings, and broken motor mount arms and bolts. If you're tired of replacing engine mounts you'll be very pleased wtih these solid rubber versions.

    Not only are these more reliable than stock fluid-filled mounts, they are slightly stiffer than new stock mounts thanks to a solid rubber construction (no voids in the rubber) but designed for street use so they remain quiet and comfortable. The solid rubber has less deflection than a stock mount, so no wasted engine and transmission motion. Less wasted motion gives you more torque to the wheels (it's not spent twisting the engine) and better shifts.

    Sold as a set of matching engine and transmission mounts.

    This item fits the following BMWs:
    2008-2013 E82 E88 BMW 128i 135i 1M Coupe
    2006-2011 E90 BMW 325i 325xi 328i 328xi 330i 330xi 335i 335xi - Sedan
    2007-2011 E91 BMW 325i 325xi 328i 328xi - Touring Wagon
    2007-2013 E92 BMW 328i 328xi 335i 335is 335xi - Coupe
    2007-2013 E93 BMW 328i 335i 335is - Convertible
    2009-2016 E89 BMW Z4 sDrive30i Z4 sDrive35i Z4 sDrive35is

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    034Motorsport Density Line Solid Rubber Motor Mount Set - E8X/E9X ...
    2X Entries Into Our F80 M3 Sweepstakes
    [Z4] - For Roadster Models Only
    034Motorsport - Corporate Logo
    T#:388772
    Part#: 034-509-005X
    In Stock
    $ 264.00 USD
    Free Shipping
    $ 264.00 USD
    Free Shipping

    Collapsing and worn engine mounts can mean big trouble for N52/N54/N55 cars. The stock mounts are filled with fluid that can leak or evaporate over time. That leaves the mount unstable and too flexible to properly support the engine. The side effects of a worn engine mount are: shaking and vibrating engine, driveline twist from engine torque that can break or snap bushings, and broken motor mount arms and bolts. If you're tired of replacing engine mounts you'll be very pleased wtih these solid rubber versions.

    Not only are these more reliable than stock fluid-filled mounts, they are slightly stiffer than new stock mounts thanks to a solid rubber construction (no voids in the rubber) but designed for street use so they remain quiet and comfortable. The solid rubber has less deflection than a stock mount, so no wasted enginemotion. Less wasted motion gives you more torque to the wheels (it's not spent twisting the engine) and better engine response.

    This item fits the following BMWs:
    2008-2013 E82 E88 BMW 128i 135i 1M Coupe
    2006-2011 E90 BMW 325i 325xi 328i 328xi 330i 330xi 335i 335xi - Sedan
    2007-2011 E91 BMW 325i 325xi 328i 328xi - Touring Wagon
    2007-2013 E92 BMW 328i 328xi 335i 335is 335xi - Coupe
    2007-2013 E93 BMW 328i 335i 335is - Convertible
    2009-2016 E89 BMW Z4 sDrive30i Z4 sDrive35i Z4 sDrive35is

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    034Motorsport - Corporate Logo
    T#:568476
    Part#: 034-509-3646
    In Stock
    $ 276.00 USD
    Free Shipping
    $ 276.00 USD
    Free Shipping
    Collapsing and worn engine mounts can mean big trouble for BMWs. The stock mounts are filled with fluid that can leak or evaporate over time. That leaves the mount unstable and too flexible to properly support the engine. The side effects of a worn engine mount are: shaking and vibrating engine, driveline twist from engine torque that can break or snap bushings, and broken motor mount arms and bolts. If you're tired of replacing engine mounts you'll be very pleased wtih these solid rubber versions. Not only are these more reliable than stock fluid-filled mounts, they are slightly stiffer than new stock mounts thanks to a solid rubber construction (no voids in the rubber) but designed for street use so they remain quiet and comfortable. The solid rubber has less deflection than a stock mount, so no wasted engine and transmission motion. Less wasted motion gives you more torque to the wheels (it's not spent twisting the engine) and better shifts.
    Show More Show Less

    Powerflex Black Series - Corporate Logo
    T#:6924324
    Part#: PFF5-4020BLK
    In Stock
    $ 62.99 USD
    Free Shipping on orders $49 and up
    Powerflex is the number one selling suspension bushing manufacturer in Europe. Their experience with polyurethane bushing material and state-of-the art manufacturing techniques allows them to produce premium performance bushings, made to exact-fit standards. Powerflex performance polyurethane bushings are built to last longer than OEM rubber bushings, while improving performance and allowing for a more engaging driving experience. Powerflex is pleased to introduce their new N54, N55, and B58 Engine Mount Inserts, intermediate alternatives to the BMW aluminum inserts and much stiffer full replacement engine mounts available on the aftermarket. Made in Black 70A durometer material, they are designed to fit the OE mounts snuggly to restrict engine movement with a minimal increase in NVH, perfect for those with tuned road cars. Their design and flexibility also mean they can be fitted to the vehicle without removing the engine mounts themselves. Reducing engine/transmission movement by way of upgraded inserts has the following benefits: Sharper throttle response Improved gear shifting More direct power transfer More balanced on/off throttle handling Prolonged life of the OE mounts *Yellow version pictured for installation reference A small increase in NVH, usually at idle, should be expected when stiffening the connecting mount between the engine and chassis. The harder the material used, the greater the NVH transmitted.
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    Powerflex Black Series - Corporate Logo
    T#:376478
    Part#: PFR5-300B
    In Stock
    $ 51.99 USD
    Free Shipping on orders $49 and up

    Sway bars transmit cornering forces from the outside wheels to the inside wheels, helping to keep the vehicle flat during cornering. This, in turn, reduces body roll and improves the driver's cornering confidence. OEM rubber sway bar bushings are designed with comfort in mind, allowing the sway bar to articulate while permitting additional movement, leading to less-than-ideal bar retention and causes unnecessary body roll.

    Powerflex polyurethane sway bar bushings are firmer than factory rubber bushings, reducing body roll and keeping sway bars in check. Polyurethane bushings won't slop around like OEM bushings, allowing sway bars to function at their fullest potential.

    Poweflex is a leading manufacturer of aftermarket suspension bushings. Using state of the art design and manufacturing, all replacement bushings are engineered to out-perform and out-last the ones that came in the car. Each line of bushings is meticulously tested and then re-tested to ensure perfect fitment and enduring quality through the life of the vehicle. A full lifetime warranty backs every one of their products and demonstrates the level of confidence and commitment Powerflex has to their customers. 

    This part fits the following BMWs:
     

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    Burger Motorsports - Corporate Logo
    T#:637547
    Part#: BMS-DSBB-F
    Back Ordered
    Starting at $ 129.00 USD
    Free Shipping
    Starting at $ 129.00 USD
    Free Shipping
    The BMS differential brace attaches the rear differential to the subframe allowing better launches, less wheel hop, and a more stable feeling rear chassis. Their unique one-piece construction eliminates welding weak points common on similar units. No logos or markings are visible for a stealth OEM appearance.
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    Powerflex Black Series - Corporate Logo
    T#:362719
    Part#: PFR5-4621B
    Back Ordered
    $ 42.99 USD
    Free Shipping on orders $49 and up

    Differential bushings are responsible for keeping the differential in solid alignment while dampening drivetrain vibration. While OE rubber bushings are fine when they are new from the factory, aged and worn out rubber bushings create a multitude of issues that can range from annoying to dangerous. As a factory bushing ages, it begins to harden and become brittle. When this happens the bushing will actually shrink and allow for movement at the differential mounting point. At this point, the differential is free to shift under load causing a noticeable clunking noise under acceleration and deceleration and massively increasing the stress on the driveshaft and axles. Manual transmissions suffer the worst from this as it can make shifting difficult since the differential will shift when the clutch is engaged and disengaged.

    By replacing these bushings with full polyurethane, the movement is eliminated since the mounting point is supported by a much stiffer material that will not harden or shrink over time. This means less stress on the driveshaft and axles and greater longevity of supporting components. 

    Powerflex Black Series bushings are the ultimate in track and race bushings. Featuring 95A durometer polyurethane, Black Series bushings are 25% stiffer than street bushings. Engineered to perform, Powerflex performance polyurethane control arm bushings offer a supreme level of control, while still providing enough comfort for the street, with advanced polyurethane that reduces NVH that often accompanies lesser bushings. Expect improved acceleration response, more direct shifting feel and overall improved drivetrain composure with Powerflex performance polyurethane bushings.

    Poweflex is a leading manufacturer of aftermarket suspension bushings. Using state of the art design and manufacturing, all replacement bushings are engineered to out-perform and out-last the ones that came in the car. Each line of bushings is meticulously tested and then re-tested to ensure perfect fitment and enduring quality through the life of the vehicle. A full lifetime warranty backs every one of their products and demonstrates the level of confidence and commitment Powerflex has to their customers. 

    This part fits the following BMWs:
    2001 - 2006 E46 M3

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    Powerflex Black Series - Corporate Logo
    T#:379320
    Part#: PFR5-526BX2
    Ships in 2 Business Days
    $ 102.99 USD
    Free Shipping
    $ 102.99 USD
    Free Shipping

    Differential bushings are responsible for keeping the differential in solid alignment while dampening drivetrain vibration. While OE rubber bushings are fine when they are new from the factory, aged and worn out rubber bushings create a multitude of issues that can range from annoying to dangerous. As a factory bushing ages, it begins to harden and become brittle. When this happens the bushing will actually shrink and allow for movement at the differential mounting point. At this point, the differential is free to shift under load causing a noticeable clunking noise under acceleration and deceleration and massively increasing the stress on the driveshaft and axles. Manual transmissions suffer the worst from this as it can make shifting difficult since the differential will shift when the clutch is engaged and disengaged.

    By replacing these bushings with full polyurethane, the movement is eliminated since the mounting point is supported by a much stiffer material that will not harden or shrink over time. This means less stress on the driveshaft and axles and greater longevity of supporting components. 

    Powerflex Black Series bushings are the ultimate in track and race bushings. Featuring 95A durometer polyurethane, Black Series bushings are 25% stiffer than street bushings. Engineered to perform, Powerflex performance polyurethane control arm bushings offer a supreme level of control, while still providing enough comfort for the street, with advanced polyurethane that reduces NVH that often accompanies lesser bushings. Expect improved acceleration response, more direct shifting feel and overall improved drivetrain composure with Powerflex performance polyurethane bushings.

    Poweflex is a leading manufacturer of aftermarket suspension bushings. Using state of the art design and manufacturing, all replacement bushings are engineered to out-perform and out-last the ones that came in the car. Each line of bushings is meticulously tested and then re-tested to ensure perfect fitment and enduring quality through the life of the vehicle. A full lifetime warranty backs every one of their products and demonstrates the level of confidence and commitment Powerflex has to their customers. 

    Show More Show Less
    Powerflex Black Series - Corporate Logo
    T#:6924328
    Part#: PFF5-4021BLK
    In Stock
    $ 58.99 USD
    Free Shipping on orders $49 and up
    Powerflex is the number one selling suspension bushing manufacturer in Europe. Their experience with polyurethane bushing material and state-of-the art manufacturing techniques allows them to produce premium performance bushings, made to exact-fit standards. Powerflex performance polyurethane bushings are built to last longer than OEM rubber bushings, while improving performance and allowing for a more engaging driving experience. Powerflex is pleased to introduce their new S55 Engine Mount Inserts, intermediate alternatives to the BMW aluminum inserts and much stiffer full replacement engine mounts available on the aftermarket. Made in Black 70A durometer material, they are designed to fit the OE mounts snuggly to restrict engine movement with a minimal increase in NVH, perfect for those with tuned road cars. Their design and flexibility also mean they can be fitted to the vehicle without removing the engine mounts themselves. Reducing engine/transmission movement by way of upgraded inserts has the following benefits: Sharper throttle response Improved gear shifting More direct power transfer More balanced on/off throttle handling Prolonged life of the OE mounts *Yellow version pictured for installation reference A small increase in NVH, usually at idle, should be expected when stiffening the connecting mount between the engine and chassis. The harder the material used, the greater the NVH transmitted.
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    Powerflex Black Series - Corporate Logo
    T#:28104806
    Part#: PFF5-4628BLK
    In Stock
    $ 49.99 USD
    Free Shipping on orders $49 and up
    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 Black Series bushing is rated at 95A durometer, which is significantly stiffer than your OE bushing's rubber. This is perfect for someone who tracks their BMW regularly and is looking for the best performance possible without going for a solid mount solution. As this bushing is 95A durometer, a significant amount of extra NVH should be expected.
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    Burger Motorsports - Corporate Logo
    T#:1316770
    Part#: E9XDIFFBRACE-SM
    Back Ordered
    $ 99.00 USD
    Free Shipping
    $ 99.00 USD
    Free Shipping

    BMW E9X 335i BMS Differential Support Bracket Brace - Small Case

    The BMW E9X 335i BMS Differential Support Bracket Brace - Small Case is a high-performance upgrade designed to enhance the stability and durability of the differential mount. Turner Motorsport offers this precision-engineered brace to reduce flex and movement of the differential, ensuring improved power transfer and handling. Ideal for high-performance driving or track use, this brace helps maintain proper alignment and extends the lifespan of your differential components.

    Benefits:

    • Enhances differential stability by reducing flex and movement
    • Improves power transfer and handling performance
    • Precision-engineered for a perfect fit and reliable performance
    • Ideal for high-performance driving and track use
    • Extends the lifespan of differential components
    • Made from high-quality materials for durability and strength
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    Powerflex Black Series - Corporate Logo
    T#:6507810
    Part#: PFF5-225BLK
    Ships in 2 Business Days
    $ 42.99 USD
    Free Shipping on orders $49 and up
    $ 42.99 USD
    Free Shipping on orders $49 and up

    Powerflex Black Series - Corporate Logo
    T#:4908018
    Part#: PFF5-1321R
    Ships on Sep 22, 2026
    $ 62.99 USD
    Free Shipping
    $ 62.99 USD
    Free Shipping

    Powerflex Black Series - Corporate Logo
    T#:376534
    Part#: PFR5-1226B
    Ships in 2 Business Days
    $ 52.99 USD
    Free Shipping on orders $49 and up

    Differential bushings are responsible for keeping the differential in solid alignment while dampening drivetrain vibration. While OE rubber bushings are fine when they are new from the factory, aged and worn out rubber bushings create a multitude of issues that can range from annoying to dangerous. As a factory bushing ages, it begins to harden and become brittle. When this happens the bushing will actually shrink and allow for movement at the differential mounting point. At this point, the differential is free to shift under load causing a noticeable clunking noise under acceleration and deceleration and massively increasing the stress on the driveshaft and axles. Manual transmissions suffer the worst from this as it can make shifting difficult since the differential will shift when the clutch is engaged and disengaged.

    By replacing these bushings with full polyurethane, the movement is eliminated since the mounting point is supported by a much stiffer material that will not harden or shrink over time. This means less stress on the driveshaft and axles and greater longevity of supporting components. 

    Powerflex Black Series bushings are the ultimate in track and race bushings. Featuring 95A durometer polyurethane, Black Series bushings are 25% stiffer than street bushings. Engineered to perform, Powerflex performance polyurethane control arm bushings offer a supreme level of control, while still providing enough comfort for the street, with advanced polyurethane that reduces NVH that often accompanies lesser bushings. Expect improved acceleration response, more direct shifting feel and overall improved drivetrain composure with Powerflex performance polyurethane bushings.

    Poweflex is a leading manufacturer of aftermarket suspension bushings. Using state of the art design and manufacturing, all replacement bushings are engineered to out-perform and out-last the ones that came in the car. Each line of bushings is meticulously tested and then re-tested to ensure perfect fitment and enduring quality through the life of the vehicle. A full lifetime warranty backs every one of their products and demonstrates the level of confidence and commitment Powerflex has to their customers. 

    This part fits the following BMWs:
    2008 - 2013 E82 1 Series Coupe 128i 135i 135is 1M Coupe
    2006 - 2008 E90 323i 325i 325xi 328i 328xi 330i 330xi 335i 335xi
    2009 - 2012 E90 323i 323i 328i 328xi 335d 335i 335i xDrive 335xi
    2006 - 2009 E91 325xi 328i 328xi
    2009 - 2011 E91 328i 328xi 
    2007 - 2013 E92 328i 328xi 335i 335xi
    2007 - 2013 E93 328i 335i

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    Powerflex Black Series - Corporate Logo
    T#:379936
    Part#: PFR5-4626B
    Ships in 2 Business Days
    $ 62.99 USD
    Free Shipping
    $ 62.99 USD
    Free Shipping

    Differential bushings are responsible for keeping the differential in solid alignment while dampening drivetrain vibration. While OE rubber bushings are fine when they are new from the factory, aged and worn out rubber bushings create a multitude of issues that can range from annoying to dangerous. As a factory bushing ages, it begins to harden and become brittle. When this happens the bushing will actually shrink and allow for movement at the differential mounting point. At this point, the differential is free to shift under load causing a noticeable clunking noise under acceleration and deceleration and massively increasing the stress on the driveshaft and axles. Manual transmissions suffer the worst from this as it can make shifting difficult since the differential will shift when the clutch is engaged and disengaged.

    By replacing these bushings with full polyurethane, the movement is eliminated since the mounting point is supported by a much stiffer material that will not harden or shrink over time. This means less stress on the driveshaft and axles and greater longevity of supporting components. 

    Powerflex Black Series bushings are the ultimate in track and race bushings. Featuring 95A durometer polyurethane, Black Series bushings are 25% stiffer than street bushings. Engineered to perform, Powerflex performance polyurethane control arm bushings offer a supreme level of control, while still providing enough comfort for the street, with advanced polyurethane that reduces NVH that often accompanies lesser bushings. Expect improved acceleration response, more direct shifting feel and overall improved drivetrain composure with Powerflex performance polyurethane bushings.

    Poweflex is a leading manufacturer of aftermarket suspension bushings. Using state of the art design and manufacturing, all replacement bushings are engineered to out-perform and out-last the ones that came in the car. Each line of bushings is meticulously tested and then re-tested to ensure perfect fitment and enduring quality through the life of the vehicle. A full lifetime warranty backs every one of their products and demonstrates the level of confidence and commitment Powerflex has to their customers. 

    Show More Show Less

    Powerflex Black Series - Corporate Logo
    T#:20782223
    Part#: PFF5-220BLK
    Ships in 2 Business Days
    $ 228.99 USD
    Free Shipping on orders $49 and up

    Upgrade your Mini with the PFF5-220 Lower Torque Mount Bracket & Bushing, designed to replace the softer OE mount prone to cracking and excessive engine movement. Ideal for standard or mildly tuned cars, this mount bracket is 300% stiffer than the worn OE mount, offering improved handling and gear shifting precision for fast road use. With CNC machined aluminum construction and various durometer bushing options, it reduces engine movement while enhancing on/off throttle balance. Easy to install with just two bolts, it eliminates the need for pressing out rubber. Expect a slight increase in NVH, particularly at idle.

    Benefits:

    • 300% stiffer than OE mount
    • Reduces engine movement and wheel hop
    • Improves handling and gear shifting precision
    • Easy installation with two bolts
    • Compatible with standard or mildly tuned cars
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    Powerflex Black Series - Corporate Logo
    T#:379091
    Part#: PFR5-325B
    Ships in 2 Business Days
    $ 49.99 USD
    Free Shipping on orders $49 and up

    Differential bushings are responsible for keeping the differential in solid alignment while dampening drivetrain vibration. While OE rubber bushings are fine when they are new from the factory, aged and worn out rubber bushings create a multitude of issues that can range from annoying to dangerous. As a factory bushing ages, it begins to harden and become brittle. When this happens the bushing will actually shrink and allow for movement at the differential mounting point. At this point, the differential is free to shift under load causing a noticeable clunking noise under acceleration and deceleration and massively increasing the stress on the driveshaft and axles. Manual transmissions suffer the worst from this as it can make shifting difficult since the differential will shift when the clutch is engaged and disengaged.

    By replacing these bushings with full polyurethane, the movement is eliminated since the mounting point is supported by a much stiffer material that will not harden or shrink over time. This means less stress on the driveshaft and axles and greater longevity of supporting components. 

    Powerflex Black Series bushings are the ultimate in track and race bushings. Featuring 95A durometer polyurethane, Black Series bushings are 25% stiffer than street bushings. Engineered to perform, Powerflex performance polyurethane control arm bushings offer a supreme level of control, while still providing enough comfort for the street, with advanced polyurethane that reduces NVH that often accompanies lesser bushings. Expect improved acceleration response, more direct shifting feel and overall improved drivetrain composure with Powerflex performance polyurethane bushings.

    Poweflex is a leading manufacturer of aftermarket suspension bushings. Using state of the art design and manufacturing, all replacement bushings are engineered to out-perform and out-last the ones that came in the car. Each line of bushings is meticulously tested and then re-tested to ensure perfect fitment and enduring quality through the life of the vehicle. A full lifetime warranty backs every one of their products and demonstrates the level of confidence and commitment Powerflex has to their customers.  *Door Buster Special - New Product*

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    Powerflex Black Series - Corporate Logo
    T#:379935
    Part#: PFR5-4625BX2
    Ships in 2 Business Days
    $ 107.99 USD
    Free Shipping
    $ 107.99 USD
    Free Shipping

    Differential bushings are responsible for keeping the differential in solid alignment while dampening drivetrain vibration. While OE rubber bushings are fine when they are new from the factory, aged and worn out rubber bushings create a multitude of issues that can range from annoying to dangerous. As a factory bushing ages, it begins to harden and become brittle. When this happens the bushing will actually shrink and allow for movement at the differential mounting point. At this point, the differential is free to shift under load causing a noticeable clunking noise under acceleration and deceleration and massively increasing the stress on the driveshaft and axles. Manual transmissions suffer the worst from this as it can make shifting difficult since the differential will shift when the clutch is engaged and disengaged.

    By replacing these bushings with full polyurethane, the movement is eliminated since the mounting point is supported by a much stiffer material that will not harden or shrink over time. This means less stress on the driveshaft and axles and greater longevity of supporting components. 

    Powerflex Black Series bushings are the ultimate in track and race bushings. Featuring 95A durometer polyurethane, Black Series bushings are 25% stiffer than street bushings. Engineered to perform, Powerflex performance polyurethane control arm bushings offer a supreme level of control, while still providing enough comfort for the street, with advanced polyurethane that reduces NVH that often accompanies lesser bushings. Expect improved acceleration response, more direct shifting feel and overall improved drivetrain composure with Powerflex performance polyurethane bushings.

    Poweflex is a leading manufacturer of aftermarket suspension bushings. Using state of the art design and manufacturing, all replacement bushings are engineered to out-perform and out-last the ones that came in the car. Each line of bushings is meticulously tested and then re-tested to ensure perfect fitment and enduring quality through the life of the vehicle. A full lifetime warranty backs every one of their products and demonstrates the level of confidence and commitment Powerflex has to their customers. 

    Show More Show Less

    Powerflex Black Series - Corporate Logo
    T#:31390594
    Part#: PFF5-1320B
    In Stock
    $ 68.99 USD
    Free Shipping on orders $49 and up

    MINI F54 to F57 Race Polyurethane Engine Support Bushing - Large is designed to improve engine stability and performance by reducing engine movement. Unlike OEM rubber bushings that prioritize comfort, these Powerflex polyurethane bushings are firmer and more durable, ensuring optimal engine retention and reduced engine slop.

    Powerflex, Europe's top-selling suspension bushing manufacturer, utilizes state-of-the-art techniques to produce these exact-fit, premium performance bushings. Built to last longer than OEM rubber bushings, they enhance performance and provide a more engaging driving experience.

    • Reduces engine movement for improved stability
    • Firmer and more durable than OEM rubber bushings
    • Ensures optimal engine retention
    • Enhances performance and driving experience
    • Exact-fit manufacturing for easy installation
    • Recommended use of Powerflex Copper Grease PCG1 for installation
    • Suitable for both track and street-driven vehicles
    • Backed by Powerflex Lifetime Warranty
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    Powerflex Black Series - Corporate Logo
    T#:6351046
    Part#: PFF5-424BLK
    Ships in 2 Business Days
    $ 32.99 USD
    Free Shipping
    $ 32.99 USD
    Free Shipping
    Powerflex Black Series - Corporate Logo
    T#:34382163
    Part#: PFR5-1625BLK
    Ships in 2 Business Days
    $ 97.99 USD
    Free Shipping on orders $49 and up

    The Powerflex Rear Diff Mount Bushing for the BMW E21 offers a robust solution to support and stabilize the differential, replacing the standard rubber bushings with durable polyurethane. This upgrade minimizes unwanted differential movement, enhancing driving dynamics and responsiveness.

    Key Benefits:

    1. Enhanced Stability: By minimizing differential movement, Powerflex bushings ensure consistent alignment, giving better rear-end stability.
    2. Improved Longevity: Unlike rubber, polyurethane is resistant to aging and degradation from elements like oil and road debris.
    3. Responsive Handling: With reduced play in the differential mount, power transfer becomes more direct, allowing for sharper throttle response.
    4. Vibration Dampening Options: Powerflex offers options like the Black Series for motorsport applications and the standard Purple for everyday performance with minimal increase in vibration.

    These bushings are popular among E21 owners who want a durable, performance-oriented solution that balances comfort and handling precision. Ideal for both spirited driving and daily use.

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