BMW Suspension Parts for BMW Z4 M Roadster S54 (2003-2008)

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Your BMW's handling is determined by the capabilities and age of your suspension components. Our selected aftermarket performance suspension like coilovers, lowering springs, cup kits, and dampers can improve the handling of your BMW dramatically. With those upgrades comes the needs for proper adjustment; our recommended supporting modifications comes stiffer sway bars, bushings, and adjustable camber/caster plates, to name a few found on this page. Completely build your suspension for the most competitive BMW driving experience, achieve your perfect look, or simply replace your worn suspension with our recommended parts.

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Powerflex Black Series - Corporate Logo
T#:362719
Part#: PFR5-4621B
Back Ordered
$ 42.99 USD
Free Shipping on orders $49 and up

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 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 acceleration response, more direct shifting feel and overall improved drivetrain composure with Powerflex performance polyurethane 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. 

This part fits the following BMWs:
2001 - 2006 E46 M3

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Front Sway Bar Link - E46, Z4
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:338081
Part#: 31351095694
In Stock
Starting at $ 36.52 USD
Free Shipping on orders $49 and up
Starting at $ 36.52 USD
Free Shipping on orders $49 and up
This is the standard front sway bar / swaybar link for BMW E46 and E85 Z4. It connects the sway bar to the strut. If you hear front end noise when going over bumps while turning we recommend you check these. Alternate BMW Part#31356780847 Sold individually

We also offer an upgraded link from Meyle with heavy duty ball joints for additional durability. See options below.

This item fits the following BMWs:
1999-2005 E46 BMW 323i 323ci 325i 325ci 328i 328ci 330i 330ci M3 - Sorry not for Xi Models!
2003-2008 Z4 BMW Z4 2.5i Z4 3.0i Z4 3.0si Z4 M Roadster M Coupe
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Powerflex Black Series - Corporate Logo
T#:376516
Part#: PFR5-504-19BX2
Ships in 1 Business Day
$ 63.99 USD
Free Shipping on orders $49 and up
$ 63.99 USD
Free Shipping on orders $49 and up

Sway bars transmit cornering forces from the outside wheels to the inside wheels, helping to keep the vehicle flat during cornering. This, in turn, reduces body roll and improves the driver's cornering confidence. OEM rubber sway bar bushings are designed with comfort in mind, allowing the sway bar to articulate while permitting additional movement, leading to less-than-ideal bar retention and causes unnecessary body roll.

Powerflex polyurethane sway bar bushings are firmer than factory rubber bushings, reducing body roll and keeping sway bars in check. Polyurethane bushings won't slop around like OEM bushings, allowing sway bars to function at their fullest potential.

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. 

This part fits the following BMWs:

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Powerflex Black Series - Corporate Logo
T#:362738
Part#: PFR5-4609-21.5B2
Ships in 1 Business Day
$ 57.99 USD
Free Shipping on orders $49 and up

Sway bars transmit cornering forces from the outside wheels to the inside wheels, helping to keep the vehicle flat during cornering. This, in turn, reduces body roll and improves the driver's cornering confidence. OEM rubber sway bar bushings are designed with comfort in mind, allowing the sway bar to articulate while permitting additional movement, leading to less-than-ideal bar retention and causes unnecessary body roll.

Powerflex polyurethane sway bar bushings are firmer than factory rubber bushings, reducing body roll and keeping sway bars in check. Polyurethane bushings won't slop around like OEM bushings, allowing sway bars to function at their fullest potential.

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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Complete Rear Upper Shock Mounting Kit
10X Entries Into Our F80 M3 Sweepstakes
Upper damper nuts vary in size from shock to shock. If you wish to replace them please measure your da
Packaged by Turner - Corporate Logo
T#:15677562
Part#: 07119905374-KT
Ships on Feb 24, 2027
Sale - Save 15% $ 115.30

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

$ 98.18 USD
Free Shipping on orders $49 and up
Sale - Save 15%
$ 115.30

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

$ 98.18 USD
Free Shipping on orders $49 and up
Complete rear upper shock mounting kit includes everything you need to replace old, hardened mounts with new heavy duty replacements. Body seals, hardware, and reinforcement plates are included. Kit includes: Heavy-duty, German-made Lemfoerder rear shock mounts from the E46 M3 Elring shock mount gaskets Heavy-duty ECS rear shock mount reinforcement plates Locking nuts
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