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Differential Mounts

Differential Bushings can vastly change the feel of your BMW. While you may notice a slight increase in NVH, upgrading your differential bushings will give your rear end a more planted feel that you can't put a price on.
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Turner Motorsport - Corporate Logo
T#:53326263
Part#: 054585LAKT
Back Ordered
New Item
$ 203.99 USD
Free Shipping
$ 203.99 USD
Free Shipping

Put an end to drivetrain flex and destructive wheel hop. The S58 engine is an absolute torque monster, especially once you start tuning and turning up the boost. While aggressive launches and heavy acceleration are the best parts of owning these vehicles, the factory rear differential mounting wasn't designed to handle that kind of abuse.

The OEM soft rubber bushing allows excessive differential twist and flex under load. This deflection transfers massive, uneven force directly to the factory mounting bolt, leading to bending or catastrophic snapping. Our upgrade replaces that weak link, locking down your drivetrain to ensure every bit of horsepower reaches the pavement safely.

Features and Benefits:

95A Poly Isolator replacing the hollow, compliant stock rubber
Upgraded grade 12.9 M14x1.5 fastener to replace the factory 10.9 bolt that is prone to snapping
No noticeable compromise in ride quality and NVH that comes with a solid mount counterpart
Design:

95A Turner Blue Polyurethane isolator
6061-T6 Black anodized aluminum bushing sleeve
Optimized Sleeve and bushing press-fit, developed with years of Polyurethane subframe and differential bushing design
Zinc Yellow-Chromate plated Grade 12.9 Hardware
Two-piece sleeve design for ease of installation
Product Development:

Our F97/F98 differential mount was designed, engineered, tested, and quality-inspected by our Research and Development team at our Wadsworth, Ohio, facility. We strive for the highest level of precision and quality through leading-edge product development technology, including FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modelling, rapid prototyping utilizing our in-house 3D printer, and rigorous long-term product testing.

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Turner Motorsport - Corporate Logo
T#:53326250
Part#: 056755LAKT
In Stock
New Item
$ 104.98

This product was last offered at the strikethrough price on
05-07-2026

$ 100.98 USD
Free Shipping on orders $49 and up
$ 100.98 USD
Free Shipping on orders $49 and up

Enhance rear-end control and put more power to the ground with a straightforward 3-piece design that installs with ease. The factory rubber may favor ride comfort, but it struggles to keep up when driving gets aggressive. As it wears, the OEM bushing can soften and deform, reducing stability and allowing wheel hop to creep in when you need traction most.

Our 95A durometer polyurethane bushings solve that problem. Engineered to strike the perfect balance between soft factory rubber and harsh solid mounts, they significantly reduce differential movement without introducing excessive vibration. The result is more efficient power transfer, so your torque goes straight to the rear wheels instead of being lost in drivetrain flex.

Features & Benefits:

Minimizes differential movement and instability to help eliminate wheel hop
Two-piece 95A split polyurethane design for easier installation
Precision-fit insert reinforces the bushing and strengthens mounting points
Resistant to road salt, oils, and harsh chemicals
Compatible with dual mount differential plates
Design:

Type II Anodized 6061-T6 CNC billet aluminum inserts for superior corrosion resistance and durability.
95A Polyurethane 2-Piece Isolator.
Product Development:

Our Rear Differential Bushings are designed, engineered, tested, and quality inspected by our Research & Development team. Our development process includes leading-edge product technology: FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modeling, rapid prototyping utilizing our in-house 3D printer, and rigorous long-term product testing.

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Powerflex - Corporate Logo
T#:53997744
Part#: PFF5-1526P
Ships in 1 Business Day
New Item
$ 41.99 USD
$ 41.99 USD
Eliminate xDrive drivetrain twist. This 80A durometer polyurethane insert slides into the factory transfer case mount, locking down deflection for immediate throttle response and track-ready durability.
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Powerflex - Corporate Logo
T#:53997743
Part#: PFF5-1526
Ships in 1 Business Day
New Item
$ 41.99 USD
$ 41.99 USD
Lock down your xDrive transfer case. This polyurethane mount insert slips into the factory rubber voids to eliminate drivetrain deflection, optimizing power delivery and stabilizing the driveline under hard load.
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Powerflex - Corporate Logo
T#:53997745
Part#: PFF5-1526R
Ships in 1 Business Day
New Item
$ 41.99 USD
$ 41.99 USD
Stabilize your xDrive drivetrain with Powerflex. This 65A durometer polyurethane insert slides into your factory transfer case mount, eliminating high-torque deflection and optimizing power transfer under heavy loads.
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Powerflex - Corporate Logo
T#:54281644
Part#: PFR5-325H
Back Ordered
New Item
$ 44.99 USD
$ 44.99 USD
The Powerflex Heritage Series is a premium motorsport upgrade engineered to eliminate critical differential deflection. Molded from an advanced, proprietary polyurethane formula, this bushing stabilizes the differential nose under high-torque loading.
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Powerflex - Corporate Logo
T#:54352781
Part#: PFR5-1625H
Ships in 1 Business Day
New Item
$ 89.99 USD
$ 89.99 USD
Powerflex - Corporate Logo
T#:54352762
Part#: PFR5-2025H
Ships in 1 Business Day
New Item
$ 89.99 USD
$ 89.99 USD
By stabilizing the differential's position relative to the subframe, the rear diff bushing helps maintain static axle angles under extreme loads, reducing wear on peripheral drivetrain components and providing a highly predictable, repeatable platform for track setups.
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Febi - Corporate Logo
T#:56471642
Part#: 33316792873
Special Order: No Guaranteed ETA
New Item
$ 12.99 USD
Free Shipping on orders $49 and up
The Febi Bilstein Rear Axle Differential Mount provides factory-spec structural retention to keep your differential firmly anchored.

Powerflex - Corporate Logo
T#:54352763
Part#: PFR5-2025BLK
Back Ordered
New Item
$ 102.99 USD
$ 102.99 USD
The Powerflex Black Series is engineered for maximum performance and minimum deflection