KYOSTAR CNC Aluminum PU Gearbox Mounts for BMW E30 E36 E39 E46 E81 E85 E86 E87 E89 E90

KYOSTAR CNC Aluminum PU Gearbox Mounts for BMW E30 E36 E39 E46 E81 E85 E86 E87 E89 E90

Upgrade the gearbox mounting system of your compatible BMW with the KYOSTAR CNC Aluminum with PU Gearbox Mounts. Designed for a range of listed BMW E-Series applications, these performance-oriented gearbox mounts combine CNC aluminum components with PU (polyurethane) mounting elements.

The supplied fitment information covers selected BMW E30, E36, E39, E46, E81, E85, E86, E87, E89, and E90 applications. Because BMW offered different engines and transmission configurations across these chassis, exact gearbox and mounting compatibility should be verified before ordering.

Features

• CNC aluminum and PU gearbox mount construction as specified in the supplied product information.

• Designed for a range of compatible BMW E-Series applications.

• Listed for compatible BMW E30 applications.

• Listed for compatible BMW E36 applications.

• Listed for compatible BMW E39 applications.

• Listed for compatible BMW E46 applications.

• Listed for compatible BMW E81 and E87 applications.

• Listed for compatible BMW E85, E86, and E89 applications.

• Listed for compatible BMW E90 applications.

• PU mounting elements integrated into the gearbox mount assemblies.

• CNC-machined aluminum outer construction as shown in the product image.

• Performance-oriented replacement / upgrade for compatible gearbox mounting applications.

Fitment

• BMW E30

• BMW E36

• BMW E39

• BMW E46

• BMW E81

• BMW E85

• BMW E86

• BMW E87

• BMW E89

• BMW E90

Important Fitment Note:

• These are gearbox / transmission mounts, not engine mounts.

• Please verify your BMW chassis, gearbox configuration, original transmission mounts, and mounting arrangement before ordering.

• The supplied fitment information lists chassis codes but does not provide individual engine or transmission variants for each chassis.

• Please compare the original gearbox mount shape, mounting studs, mounting points, dimensions, and surrounding components with the product photos before purchase.

• The supplied product information does not specify PU hardness, aluminum alloy grade, mount dimensions, measured stiffness, or NVH data.

• Vehicles with engine swaps, gearbox conversions, aftermarket transmission crossmembers, or modified drivetrain mounting systems may require additional fitment verification.

Fitment Note:

These CNC aluminum and PU gearbox mounts are listed for compatible BMW E30, E36, E39, E46, E81, E85, E86, E87, E89, and E90 applications.

Transmission and mounting configuration are important fitment requirements. BMW vehicles within the same chassis family may use different transmissions and mounting arrangements depending on model, engine, production specification, and drivetrain configuration.

For this reason, chassis designation alone should not be used as the only fitment check. Before ordering, compare your existing transmission mounts with the product photos and verify the mounting points, stud arrangement, mount dimensions, transmission support configuration, and surrounding clearance.

Vehicles equipped with transmission conversions, engine swaps, aftermarket transmission crossmembers, custom drivetrain components, or other non-standard mounting arrangements should not be assumed compatible solely because the chassis appears in the fitment list.

PU gearbox mounts are performance-oriented mounting components. Their operating characteristics may differ from conventional soft factory-style rubber mounts. However, the supplied product information does not provide PU Shore hardness, measured stiffness, vibration, noise, or NVH test data, so no specific numerical change is claimed.

The supplied information also does not provide aluminum alloy grade, product dimensions, torque specifications, or quantified drivetrain-movement reduction. No unsupported specifications are therefore claimed.

Professional installation is recommended. The transmission should be properly supported during mount removal and installation, and mounting alignment, fastener security, drivetrain positioning, and surrounding clearance should be checked after installation.

Product Details

FAQ

Q: What BMW chassis are these gearbox mounts listed for?
A: The supplied fitment information lists BMW E30, E36, E39, E46, E81, E85, E86, E87, E89, and E90 applications.

Q: Are these engine mounts?
A: No. This product is specifically identified as a set of gearbox mounts / transmission mounts.

Q: Will these fit a BMW E30?
A: BMW E30 is included in the supplied fitment information. Exact gearbox and mounting compatibility should still be verified before ordering.

Q: Will these fit a BMW E36?
A: BMW E36 is listed in the supplied product information. Please verify your transmission and original mount configuration before purchase.

Q: Will these fit a BMW E39?
A: BMW E39 is included in the supplied fitment information. Exact transmission compatibility should be checked before ordering.

Q: Will these fit a BMW E46?
A: BMW E46 is listed as a compatible chassis in the supplied product information, subject to gearbox and mounting verification.

Q: Will these fit a BMW E81 or E87?
A: Both BMW E81 and E87 are included in the supplied fitment information.

Q: Will these fit a BMW Z4?
A: The supplied information lists E85, E86, and E89 chassis applications. Exact gearbox and mounting compatibility should be verified before ordering.

Q: Will these fit a BMW E90?
A: BMW E90 is included in the supplied fitment information. Please verify the original transmission mount arrangement before purchase.

Q: What are these gearbox mounts made from?
A: The supplied product information identifies CNC aluminum construction with PU mounting elements.

Q: What does PU mean?
A: PU refers to polyurethane, which is the mounting material identified in the supplied product description.

Q: What is the PU Shore hardness?
A: The supplied product information does not provide a Shore hardness rating, so no specific hardness value is claimed.

Q: Will these mounts increase vibration or noise?
A: PU performance mounts can have different operating characteristics from softer factory-style mounts. However, no measured vibration or NVH data is supplied for this product, so a specific increase cannot be stated.

Q: Will these fit an engine-swapped or transmission-swapped BMW?
A: Compatibility with swapped or custom drivetrain configurations is not specified. These vehicles require separate fitment verification.

Q: What should I verify before ordering?
A: Verify your BMW chassis, gearbox type, original transmission mount shape, mounting studs, mounting-point locations, transmission support arrangement, and surrounding clearance.

Q: Is professional installation recommended?
A: Yes. Professional installation is recommended because the transmission should be safely supported while the mounts are removed and installed, and correct drivetrain alignment should be checked afterward.

Warranty & Shipping

Every KYOSTAR component is inspected before shipment to ensure product condition, mounting areas, supplied components, and packaging integrity before delivery.

All components are securely packaged to help reduce the risk of transportation damage. Please inspect the gearbox mounts after delivery and contact our support team if you notice shipping damage, missing components, or product-related concerns.

Please contact KYOSTAR customer support if you need assistance with vehicle fitment, installation questions, or after-sales service.