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Subframe

Subframe bushings are a common failure point on BMWs - replace these to refresh your BMW.

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Rear Subframe Bushings/Mount Set - Turner Solid Aluminum - E82 1M, E9X M3
Turner Motorsport - Corporate Logo
T#:4402
Part#: TDR9080SRS
In Stock
Sale - Save 10% $318.95
$287.06
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Sale - Save 10% $318.95
$287.06
Free Shipping
Solid rear subframe bushings for all E90 M3 & E92 M3, suggested for track/racing use only. Designed and manufactured by TMS using knowledge from many years of successful professional racing in Grand-Am Sports Car Challenge, SCCA Speed World Challenge, BMW Club, and SCCA club racing.

A BMW's rear subframe is the heart of the suspension. When the subframe moves, so do all the suspension mounting points. Replacing the stock rubber bushings with solid ones limits both drivetrain and suspension movement, eliminating the unwanted movement and keeping your BMW's setup the way it should be. These solid mounts will also help prevent the subframe from tearing out of the chassis on your E90/E92 3 series. We spend lots of extra time machining each TMS subframe mount to keep your car as light as possible. CNC machined from high grade billet aluminum for precision and quality. These solid aluminum subframe bushings are for racing applications only, and can be used on all E90 M3 & E92 M3.

This item fits the following BMWs:
2011-2012 E82 BMW 1M
2008-2012 E90 BMW M3 - Sedan
2008-2012 E92 BMW M3 - Coupe
2008-2012 E93 BMW M3 - Convertible
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Rear Subframe Bushings/Mount Set - Turner Solid Aluminum - E46/E46 M3, Z4/Z4 M
Turner Motorsport - Corporate Logo
T#:581
Part#: TDR4680014
In Stock
Sale - Save 10% $340.95
$306.86
Free Shipping
Sale - Save 10% $340.95
$306.86
Free Shipping
Made in the USA The rear subframe is the heart of the BMW rear suspension. Not only do all of the suspension arms attach to it, the driveline runs through it via the differential and half-shafts. Therefore, a track-prepped E46 should never see any flex or deflection in any of the subframe mounts. Excessive movement here transfers to unwanted suspension motions elsewhere and is also a major contributor to failures in the rear floor sheetmetal.

While our Delrin-Aluminum subframe mounts conform to various racing series these all-aluminum mounts are the ultimate in reducing flex and deflection. The rubber stock mounts, and the Delrin mounts to a small degree, flex and deflect as various forces are applied throughout the subframe - on and off throttle loading, cornering on flat surfaces, bumpy surfaces, weight transfer, sticky race tires, etc. Too much flex from worn rubber mounts will transfer to flex where the subframe meets the chassis/floor. This is the primary cause for the infamous rear subframe failure. These fully solid aluminum mounts have absolutely zero flex to them so they will not contribute to rear subframe issues. The Turner E46 Reinforcement Kit is still recommended.

These solid subframe mounts were designed for racing use only, where we won several sports car championships in the Grand-Am Cup series. These subframe mounts are over-engineered to be a major improvement over the stock subframe mounts not only for performance but also in strength as well. The aluminum is CNC machined for a precise fit and minimal weight. One front bushing is slotted to allow for BMW's manufacturing tolerances. Professional and experienced installation is required.

This item fits the following BMWs:
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3
2001-2006 SpecE46 BMW 330i 330ci
2003-2008 Z4 BMW Z4 2.5i Z4 3.0i Z4 3.0si Z4 M Roadster M Coupe
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Powerflex Polyurethane Rear Differential Rear Position Bushing Set - E82 1M E9x M3
Powerflex - Corporate Logo
T#:376418
Part#: PFR5-1226
Ships in 1-3 days
$48.99
Free Shipping

Differential bushings are responsible for keeping the differential in solid alignment while dampening drivetrain vibration. While OE rubber bushings are fine when they are new from the factory, aged and worn out rubber bushings create a multitude of issues that can range from annoying to dangerous. As a factory bushing ages, it begins to harden and become brittle. When this happens the bushing will actually shrink and allow for movement at the differential mounting point. At this point, the differential is free to shift under load causing a noticeable clunking noise under acceleration and deceleration and massively increasing the stress on the driveshaft and axles. Manual transmissions suffer the worst from this as it can make shifting difficult since the differential will shift when the clutch is engaged and disengaged.

By replacing these bushings with full polyurethane, the movement is eliminated since the mounting point is supported by a much stiffer material that will not harden or shrink over time. This means less stress on the driveshaft and axles and greater longevity of supporting components. 

Powerflex street bushings are ideal for street driven vehicles and those that see occasional autocross or track time. Need bushings for a dedicated track car? Powerflex Black Series bushings are the ultimate in track and race bushings. Featuring 95A durometer polyurethane, Black Series bushings are 25% stiffer than street bushings. Engineered to perform, Powerflex performance polyurethane control arm bushings offer a supreme level of control, while still providing enough comfort for the street, with advanced polyurethane that reduces NVH that often accompanies lesser bushings. Expect improved steering feel, turn in, more responsive handling and overall improved chassis composure with Powerflex performance polyurethane control arm bushings.

Poweflex is a leading manufacturer of aftermarket suspension bushings. Using state of the art design and manufacturing, all replacement bushings are engineered to out-perform and out-last the ones that came in the car. Each line of bushings is meticulously tested and then re-tested to ensure perfect fitment and enduring quality through the life of the vehicle. A full lifetime warranty backs every one of their products and demonstrates the level of confidence and commitment Powerflex has to their customers. 

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Rear Subframe Bushings/Mount Set - Turner Solid Race - E36, E36 M3
Turner Motorsport - Corporate Logo
T#:340737
Part#: TDR3680002
In Stock
$248.95
Free Shipping

TMS E36 solid sub-frame bushings are designed for track and racecars to remove twisting and flexing of the subframe where it mounts to the rear floor. This twisting is one of the causes of rear subframe/floor failure in E36 cars. We originally developed these for our SCCA SPEED World Challenge cars. A BMW's subframe is the heart of the suspension. Because the subframe is mounted with rubber isolators, when the subframe moves, so does the rest of the suspension mounting points. As the rubber wears and becomes more pliable, the alignment and suspension settings move even more. Replace the stock rubber bushings to limit drivetrain and suspension movement and keep your car set up the way it's supposed to be.

Our mounts are designed using a CAD program with further attention paid to making the mount as light as possible. We also notched the flanges to allow the use of the BMW factory removal tools. One front bushing is slotted to allow for compliance between manufacturing standards as BMW specifies. These bushings are CNC machined out of high grade billet aluminum.

Click for installation instructions. (PDF)

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