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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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Polyurethane Transmission Mount Set - Street

T#:381356

Part#: 002705ECS02A

In Stock

Sale - Save 10% $ 117.99

This product was last offered at the strikethrough price on
06-13-2026

$ 106.19 USD

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Sale - Save 10%

$ 117.99

This product was last offered at the strikethrough price on
06-13-2026

$ 106.19 USD

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ECS Tuning's Polyurethane Transmission Mounts are designed to address the vital role of transmission mounts in your vehicle's suspension. The factory mounts are notorious for failures that can result in over-revving, mis-shifts, and in extreme cases, potential chassis damage. Our polyurethane mounts provide a robust solution, engineered for both street and track applications, guaranteeing enhanced performance while eliminating concerns about torn mounts.

Polyurethane stands out with its exceptional toughness, durability, and impressive wear resistance compared to rubber. It also exhibits resistance to water, oil, and grease while retaining its original shape even when subjected to significant compression. By reducing deflection, polyurethane facilitates effective power transfer. While there may be a slight increase in NVH (Noise, Vibration, Harshness), the benefits far outweigh this minor compromise in ride comfort. With a polyurethane durometer of 70A, our street mounts are versatile, offering both daily driving comfort and track durability. For more track-oriented enthusiasts, we provide stiffer mounts with an 80A durometer rating.

For a hassle-free installation, we supply a comprehensive DIY guide. ECS Tuning ensures that you are fully supported from start to finish.

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ECS Heavy Duty Differential Bushing - E30, 318ti, Z3

T#:30662812

Part#: 055059LA01

In Stock

Sale - Save 56% $ 52.99

This product was last offered at the strikethrough price on
04-28-2026

$ 23.24 USD

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Sale - Save 56%

$ 52.99

This product was last offered at the strikethrough price on
04-28-2026

$ 23.24 USD

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As your E30 ages, the rear differential bushing can crack, dry rot, and split. It's time for an upgrade. The ECS Tuning Heavy Duty Differential Bushing is crafted with performance in mind. Instead of using polyurethane, which is known for increasing NVH, the enthusiasts at ECS chose HD 70D rubber. This material offers a close-to-factory feel without the excess deflection of softer bushings, ensuring a pleasurable driving experience free from differential whine and excess movement.

Features & Benefits:

Eliminates Weak OEM Mount: The aging E30 chassis deserves an upgrade. Replace your old, cracked, and worn factory bushing with this HD alternative for improved performance. Perfect for Street or Track: Constructed from HD rubber instead of polyurethane or Delrin, this bushing provides comfort for daily driving while remaining effective in performance applications. Added Responsiveness: The 70D HD rubber compound is stiffer than the stock material, reducing drivetrain movement and effectively locking down your rear differential. Easy Installation: Precision-manufactured to the exact specifications of your OEM differential bushing, the ECS heavy-duty replacement installs just like the factory component. Whether you are replacing an aging factory bushing, removing excess driveline movement, or balancing performance and comfort, ECS Tuning has you covered with their Heavy Duty Rear Differential Bushing.

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BMW E46 Z4 Front Position Differential Bushing - Performance Polyuret...

T#:363116

Part#: 002447ECS02

In Stock

Sale - Save 25% $ 66.99

This product was last offered at the strikethrough price on
06-13-2026

$ 50.24 USD

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Sale - Save 25%

$ 66.99

This product was last offered at the strikethrough price on
06-13-2026

$ 50.24 USD

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Enhance your driving experience with ECS Tuning's Performance Polyurethane Differential Bushings. These meticulously engineered bushings offer a direct connection between your right foot, the engine, and the chassis, making them an essential upgrade.

Say goodbye to the softness of factory rubber differential bushings that absorb vibrations and reduce performance.
ECS Tuning's polyurethane bushings eliminate the deflection found in factory rubber bushings, resulting in improved power transfer from the differential to the wheels.
Experience enhanced throttle control, whether you're navigating a challenging canyon road, drag racing, or simply commuting.

Unlike delrin or solid differential mounts, these bushings deliver improved performance without introducing harshness or excessive vibration.

Crafted from durable 88A durometer polyurethane and enhanced with a black anodized 6061-T6 aluminum sleeve.

Resistant to chemicals, ozone degradation, road salt, and general wear and tear, ensuring a longer service life.

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Condor Speed Shop Differential Stud Kit - 45mm - E30, E28, E36 318ti,...

T#:578193

Part#: DIFSTKT-1

Ships in 1 Business Day

$ 32.00 USD

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$ 32.00 USD

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Condor Speed Shop took the hard work out of removing and reinstalling your differential! If you've ever taken out your diff, you know how much of a pain it is to get the bolt holes to line up during re-installation. They never seem to line up perfectly, and getting the bolts to go in can be time-consuming. Condor's diff studs are designed to make your life a little easier. The diff will line up and lift right into the holes every time. 38mm studs are used with OEM or regular subframe bushings. 45mm studs are used with the 12mm riser subframe bushings. You'll need to pull the driveshaft to drop the diff. Use thread locker during install. Recommended for street or race use. Kit includes: 4 Studs 4 Washers 4 Lock Nuts

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Performance Polyurethane Differential Bushing - Front Position - E36 ...

T#:384599

Part#: 002447ECS04KT2

In Stock

Sale - Save 25% $ 66.47

This product was last offered at the strikethrough price on
06-13-2026

$ 49.85 USD

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Sale - Save 25%

$ 66.47

This product was last offered at the strikethrough price on
06-13-2026

$ 49.85 USD

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Your E36's rear differential is indirectly connected to your right foot through the engine and driveline, and connected to the seat of your pants through the chassis. Soft factory rubber differential bushings absorb vibrations between chassis and differential, providing comfort and softness in both of these connections. ECS Tuning's In-House Engineered Performance Polyurethane Differential Bushing eliminate deflection permitted by factory bushings, improving the connection you feel to your differential. Removal of this slop allows for crisper power transfer from differential to wheels, which means better throttle control while carving a canyon road, drag racing, sliding the rear end out, or just driving to work. This is achieved without the harshness or vibration associated with delrin or solid differential mounts. Featuring a tough 88A durometer polyurethane and Black anodized 6061-T6 aluminum Sleeve, our Performance Polyurethane Differential Bushings are more resistant to chemicals, ozone degradation, road salt, and general wear and tear than factory rubber bushings, resulting in a longer service life.

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Condor Speed Shop Street Polyurethane Transmission Mount - E10 2002 1...

T#:577575

Part#: PLYE10TRANS

Ships in 2 Business Days

$ 23.99 USD

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$ 23.99 USD

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Conder Speed Shop Solid Transmission Mounts - BMW F22/23 F3X RWD ...

T#:597365

Part#: TRANSIX_F2XF3X

In Stock at Vendor

$ 34.00 USD

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$ 34.00 USD

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These UHMW race grade transmission mounts are the ultimate solution to keep your transmission from moving under heavy load or acceleration. Transmission movement or "play" can cause missed shifts and extreme mechanical damage in some cases.

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Condor Speed Shop M20+20 Engine Riser Motor Mount Set - E30

T#:577565

Part#: S14M

Ships in 1 Business Day

$ 55.00 USD

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$ 55.00 USD

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These specific mounts are designed for those with clearance issues on extremely low E30s. They are 20mm taller than OEM mounts to add necessary clearance to ensure the oil pan sits above the stock subframe. Under hard braking the OEM rubber mounts allow the m20 to lean forward. Not only do these solid UHMW replacement mounts stiffen the engine and drivetrain, but they also raise the engine by 20mm, dramatically changing the responsiveness and raising the oil pan height of your E30. UHMW is an excellent general-purpose plastic with a unique combination of wear and corrosion resistance, low friction surface and impact strength. It is resistant to chemical attack and moisture absorption and retains key physical properties to -30 C.

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Poly Transmission Mount Set

T#:597363

Part#: TRANSIX_E39P

Ships in 1 Business Day

$ 35.00 USD

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$ 35.00 USD

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The 70A poly mounts are the solution if you are trying to minimize vibration and NVH. They are currently the softest polyurethane mounts on the market. We suggest these for all street cars. If you are building a track car, check out the solid UHMW transmission mounts from Condor Speed Shop.

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Condor Speed Shop Engine Mount Heat Sleeve - M5X, S5X Condor Engine M...

T#:577943

Part#: E36HS

Ships in 4 Business Days

$ 18.99 USD

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$ 18.99 USD

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Condor's Engine Mount Heat Sleeves reflect up to 90 percent of radiant heat. They withstand 1,100 degrees F of radiant heat and up to 450 degrees F of direct heat. The extra protection of the heat sleeves is a perfect fit for street cars, track cars, and other high heat applications. Their mounts withstand temperatures up to 180 degrees F and do not need any heat protection during regular usage, but we recommend the extra protection of their sleeves for all vehicles with high underhood heat temperatures such as turbo and supercharged vehicles. Condor heat sleeves can be easily installed by simply slipping the sleeve around the engine mount and securing using the Velcro tabs. *LISTING IS FOR ONE HEAT SHIELD **Heat sleeve fitment is for Condor Engine Mounts only.

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Drivetrain Mounts and Upgrades

Sub-Categories

Polyurethane Transmission Mount Set - Street

ECS Heavy Duty Differential Bushing - E30, 318ti, Z3

BMW E46 Z4 Front Position Differential Bushing - Performance Polyuret...

Condor Speed Shop Differential Stud Kit - 45mm - E30, E28, E36 318ti,...

Performance Polyurethane Differential Bushing - Front Position - E36 ...

Condor Speed Shop Street Polyurethane Transmission Mount - E10 2002 1...

Conder Speed Shop Solid Transmission Mounts - BMW F22/23 F3X RWD ...

Condor Speed Shop M20+20 Engine Riser Motor Mount Set - E30

Poly Transmission Mount Set

Condor Speed Shop Engine Mount Heat Sleeve - M5X, S5X Condor Engine M...

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