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VTT F9X M5/M8 Rear Bushing Insert Kit
VTT F9X M5/M8 Rear Bushing Insert Kit - Image 2
VTT F9X M5/M8 Rear Bushing Insert Kit - Image 3
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VTT F9X M5/M8 Rear Bushing Insert Kit

$137.49

50 in stock (can be backordered)

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VTT F9X M5/M8 Rear Differential Lockdown Kit

Looking to tighten up the rear differential on your F9X M5 or M8 and eliminate unwanted differential movement during hard launches, aggressive shifting, and high-horsepower driving? VTT has you covered.

Our Rear Differential Lockdown Kit is designed to significantly reduce differential movement by reinforcing the factory rear differential mounting point. The precision-machined billet insert fills the voids in the factory rubber bushing, dramatically limiting deflection while maintaining the majority of the OEM ride quality and compliance.

The result is a more planted and predictable rear end, improved power transfer to the ground, reduced driveline shock, and less differential movement under high-load conditions.

Unlike solid-mounted solutions, the VTT Lockdown Kit retains the factory bushing while reinforcing it, providing an excellent balance between performance and daily drivability.

50 in stock (can be backordered)

Warranty: 12 Months

Grab your Transfer Case Bushings, and Front Insert kit as a bundle and save 5%!

IMG_3739

VTT F9X M5/M8 Billet BMW Transfer Case Bushing Inserts

Stop the Flex. Launch with Confidence.

Soft bushings are the enemy of hard launches and drivetrain longevity. The factory BMW transfer case bushings on the F9X M5/M8 platform are notoriously soft—exactly the opposite of what you want when you're putting serious power to the ground.

Sure, you could replace the entire bushing with a solid one, but that often requires lowering or removing the transfer case—not to mention the added NVH (noise, vibration, and harshness) that comes with it.

Our VTT transfer case bushing inserts offer a smarter solution: reduce bushing flex without sacrificing comfort. You keep smooth, quiet drivability around town and at idle—but when it’s time to launch, the transfer case stays planted.

IMG_4933

VTT F9X M5/M8 Front Bushing Insert Kit

Want to tighten up the differential on your F9X M5 or M8 and eliminate unwanted differential movement during hard launches, aggressive driving, or cornering? VTT has you covered with our Billet Differential Insert Kit.

Precision CNC-machined from 6061-T6 aluminum and anodized black for a durable, corrosion-resistant finish, these inserts are designed to fill the voids in the factory differential bushings, significantly reducing differential movement while maintaining excellent street manners and OEM-like ride quality.

The result is improved drivetrain stability, more consistent launches, reduced wheel hop, better power transfer to the pavement, and a more connected feel during acceleration and cornering. This is especially beneficial on tuned and high-horsepower vehicles where differential movement becomes more pronounced under load.

Installation is straightforward and can be completed with basic hand tools. Simply remove the differential mounting bolts one at a time, lower the differential slightly, install the billet inserts, and replace the factory hardware with the supplied upgraded bolts and washers.

Kit Includes

  • 2 Front Billet Differential Inserts
  • 2 Hardened 49mm Steel Washers
  • 2 M12x1.5 x 110mm Mounting Bolts
SKU: VTT-F9X-M5-M8-REAR-DIFF-INSERT Categories: , ,

Description

VTT F9X M5/M8 Rear Differential Lockdown Kit

Looking to tighten up the rear differential on your F9X M5 or M8 and eliminate unwanted differential movement during hard launches, aggressive shifting, and high-horsepower driving? VTT has you covered.

Our Rear Differential Lockdown Kit is designed to significantly reduce differential movement by reinforcing the factory rear differential mounting point. The precision-machined billet insert fills the voids in the factory rubber bushing, dramatically limiting deflection while maintaining the majority of the OEM ride quality and compliance.

The result is a more planted and predictable rear end, improved power transfer to the ground, reduced driveline shock, and less differential movement under high-load conditions.

Unlike solid-mounted solutions, the VTT Lockdown Kit retains the factory bushing while reinforcing it, providing an excellent balance between performance and daily drivability.

Features

  • CNC-machined billet aluminum insert
  • Fills the voids in the factory differential bushing
  • Reduces differential movement under load
  • Improves launch consistency and drivetrain stability
  • Maintains OEM-style ride compliance
  • Direct bolt-in installation
  • Designed for high-performance and high-horsepower applications

Installation

Installation is straightforward and can be completed with basic hand tools.

  1. Support the differential.
  2. Remove the factory rear differential bolt.
  3. Press the billet insert into the factory bushing using the supplied hardware.
  4. Install the supplied upgraded hardware and torque to specification.

Kit Includes

  • One CNC-machined Billet Differential Bushing Insert
  • Two 49mm Hardened Steel Washers
  • One Grade 12.9 M14 Mounting Bolt
  • One M14 Lock Nut

NVH Notice

Because this product reduces movement in the factory rubber bushing, a slight increase in noise, vibration, and harshness (NVH) may be noticeable. Most customers find the increase minimal while appreciating the significant improvement in drivetrain control and stability.

Fitment

BMW F90 M5 (2018-2023)

BMW F90 M5 Competition (2019-2023)

BMW F91 M8 Convertible (2020-2023)

BMW F92 M8 Coupe (2020-2023)

BMW F93 M8 Gran Coupe (2020-2023)

BMW F91/F92/F93 M8 Competition (2020-2023)

Additional information

Weight 1 lbs
Dimensions 8 × 8 × 8 in

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