Subframe Assemblies for BMW Z4 M Roadster S54 (2003-2008)

Clear BMW chassis

If your BMW needs an entire new subframe, you're in the right place. These tend to rot out on older BMWs, and sometimes they are too far gone to save.

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Rear Subframe Bushings/Mount Set - Turner Solid Aluminum - E46/E46 M3...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:581

Part#: TDR4680014

In Stock

Sale - Save 30% $ 434.99

This product was last offered at the strikethrough price on
05-03-2026

$ 304.49 USD

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Sale - Save 30%

$ 434.99

This product was last offered at the strikethrough price on
05-03-2026

$ 304.49 USD

Add to Wish List

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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