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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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IRP Performance Polyurethane Engine and Transmission Mounts - E36 E46
IRP Performance Polyurethane Engine and Transmission Mounts - E36 E46...
IRP - Individual Racing Parts - Corporate Logo
T#:401413
Part#: IRPEGS-2
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$ 185.99 USD
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$ 185.99 USD
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Stock mounts are made from soft rubber and are sometimes filled with fluid to give a car the most comfortable ride possible. The soft rubber and fluid helps to reduce the total amount of vibration, noise, and harshness (NVH) that is transferred into the cabin. The problem with this is driveline slop. The stock mounts allow a lot of excess movement and increases the amount of time it takes to transfer power to the wheels.

In order to address this issue, performance mounts can be substituted to reduce the amount of slop and transfer power to the wheel quicker. Two options for this are polyurethane mounts and solid mounts.

Solid mounts are great for an immediate transfer of power but allow for a ton of noise and vibration to be felt and heard in the cabin of the vehicle. This is great for the track where there aren't any issues with excess harshness, but as a daily driver, this can become an annoying pain in the neck.

The best middle ground is Polyurethane. Polyurethane is much stiffer than rubber and gives you the much stiffer feel you may be looking for. This allows for the increase in responsiveness, but isn't so extreme that it transfers all of the sound and vibrations into the cabin. This makes it much more comfortable for daily use while still reinforcing your driveline.

Features:

  • Aluminum and Polyurethane Construction
  • 80A Durometer Rating
  • New Hardware
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Race German HD Differential Stud Kit
Race German HD Differential Stud Kit
Race German - Corporate Logo
T#:2602234
Part#: HDE30DIFFSTUDKIT
Ships in 2 Business Days
$ 59.99 USD
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$ 59.99 USD
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This stud kit makes installing and removing the differential a breeze. Made from heat treated 10.9 grade carbon steel, and then black zinc coated for corrosion resistance. Features 10.9 Grade Corrosion Resistant Studs Extra Thick Stainless Steel Washer Black Oxide Conical Lock Nut Loctite for installation
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IRP Isolated Aluminum Engine Mounts - E9X, E8X (non-M)
IRP Isolated Aluminum Engine Mounts - E9X, E8X (non-M)
IRP - Individual Racing Parts - Corporate Logo
T#:2423579
Part#: IRPEM-9XAL
Special Order: No Guaranteed ETA
$ 264.99 USD
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$ 264.99 USD
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Direct replacement performance mounts. Features: CNC machined lightweight high quality anodized aluminum Replaces OE: 22116760330; 22116773744 Includes: 2 pcs. aluminum engine mounts
IRP Performance Solid Engine and Transmission Mounts - E30 E36 E46
IRP Performance Solid Engine and Transmission Mounts - E30 E36 E46 ...
IRP - Individual Racing Parts - Corporate Logo
T#:401414
Part#: IRPEGS-1
Special Order: No Guaranteed ETA
$ 185.99 USD
Free Shipping
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$ 185.99 USD
Free Shipping
Add to Wish List

Stock mounts are made from soft rubber and are sometimes filled with fluid to give a car the most comfortable ride possible. The soft rubber and fluid helps to reduce the total amount of vibration, noise, and harshness (NVH) that is transferred into the cabin. The problem with this is driveline slop. The stock mounts allow a lot of excess movement and increases the amount of time it takes to transfer power to the wheels.

In order to address this issue, performance mounts can be substituted to reduce the amount of slop and transfer power to the wheel quicker. Two options for this are polyurethane mounts and solid mounts. 

The middle ground is Polyurethane. Polyurethane is much stiffer than rubber, but these still let a large amount of movement in comparison to solid mounts. These are great for sporty, aggressive street driving, but for the track are not ideal.

For the track, solid mounts are great. Solid mounts give you an immediate transfer of power, at the cost of increase NVH. This is great for the track where comfort is the least of your worries and power is all that is important.

Features:

  • Aluminum and Polyurethane Construction
  • 80A Durometer Rating
  • New Hardware
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IRP Aluminum Differential Bushings - E82 1 M, E9X M3
IRP Aluminum Differential Bushings - E82 1 M, E9X M3
IRP - Individual Racing Parts - Corporate Logo
T#:587016
Part#: IRPDB-9XMAL
Special Order: No Guaranteed ETA
$ 133.99 USD
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$ 133.99 USD
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These aluminum mounts are a direct replacement for the stock rubber bushings and have been lightened to remove excess weight. Using aluminum instead of rubber eliminates the "wind up" inherent in rubber mounts, and this deflection slows suspension & drivetrain response. The tradeoff is an increase in NVH. Features: Stiffens chassis/Improves stability Less wear of other components Better durability Provides better control of chassis geometry Replaces OE: 33312284019, 33312283384 Recommended for racing use only Includes: 1 rear aluminum bushing 2 front aluminum bushings
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AAF ZF Transmission Swap Kit - 5.5" Bearing - BMW E30
AAF ZF Transmission Swap Kit - 5.5" Bearing - BMW E30
Advanced Auto Fabrication - Corporate Logo
T#:52129730
Part#: E30ZFTSK55
Ships in 3 Business Days
New Item
$ 1,198.00 USD
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$ 1,198.00 USD
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Upgrade your E30’s drivetrain with the AAF ZF Transmission Swap Kit, a turnkey solution for those demanding more reliability and smoother gear engagement.
IRP Aluminum Differential Bushings - E46 M3
IRP Aluminum Differential Bushings - E46 M3
IRP - Individual Racing Parts - Corporate Logo
T#:587020
Part#: IRPDB-46MAL
Special Order: No Guaranteed ETA
$ 151.99 USD
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$ 151.99 USD
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These aluminum mounts are a direct replacement for the stock rubber bushings and have been lightened to remove excess weight. Using aluminum instead of rubber eliminates the "wind up" inherent in rubber mounts, and this deflection slows suspension & drivetrain response. The tradeoff is an increase in NVH. Features: Stiffens chassis/Improves stability Less wear of other components Better durability Provides better control of chassis geometry Replaces OE: 33172282484 Recommended for racing use only Includes: 2 rear aluminum bushing 1 front aluminum bushings
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