BMW Suspension Parts for BMW E46 M3 S54 (1999-2005)

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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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E36, E46 Rear Shock Tower Mount Reinforcement Kit
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:3440
Part#: TSU9975100
In Stock
Sale - Save 15% $ 58.99

This product was last offered at the strikethrough price on
06-13-2026

$ 50.14 USD
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Sale - Save 15%
$ 58.99

This product was last offered at the strikethrough price on
06-13-2026

$ 50.14 USD
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Made in the USA A very common weak point on the 3 series BMW is the sheetmetal of the rear shock tower. The sheetmetal here is relatively thin and very susceptible to stress and fatigue. A worn out shock will bottom-out more often and this energy is transferred through the bump stop and into the metal chassis. Stiffer shocks and shock mounts also put more stress on the sheetmetal. Factor in age, mileage, and environmental conditions and it's not a surprise that we see shock tower failures often. BMW addressed this issue with reinforcements of their own but our's are thicker for additional strength. This kit mounts on top of the shock tower and can either be bolted or welded in place. Because of the shape of the rear shock tower, these do not fit cabrio/convertible cars.

This item fits the following BMWs:
1992-1999 E36 BMW 318i 318is 318ti 323is 325i 325is 328i 328is M3 - not for convertibles
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3 - not for convertibles
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Turner Motorsport - Corporate Logo
T#:338951
Part#: JRDRP
Back Ordered
Starting at $ 39.99 USD
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Starting at $ 39.99 USD
Free Shipping on orders $49 and up
The rear mounts in BMW 3 series fail, no matter what year from 1983 to present, that is a weak point of the suspension. Here's the solution. The 3 Series "Repair Shop" Rear Shock Mounts carry a lifetime warranty and will last as long as you own your car. Expect the same comfortable ride you have with factory mounts. These are an inexpensive alternative to expensive factory mounts.

Make this complete by adding the mount gasket and nuts (add the option below).
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Powerflex Black Series - Corporate Logo
T#:362719
Part#: PFR5-4621B
Back Ordered
$ 42.99 USD
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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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Turner Motorsport Camber Plate Bushing (Street) - E46 M3
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:387579
Part#: 017803TMS03A
In Stock
Sale - Save 38% $ 33.99

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

$ 20.97 USD
Free Shipping on orders $49 and up
Sale - Save 38%
$ 33.99

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

$ 20.97 USD
Free Shipping on orders $49 and up

This is a NEW replacement polyurethane bushing used in our E46 M3 Front Street Camber Plates. This is a custom-manufactured part for Turner Motorsport, made with our own specifications. Replacement is straight-forward but does require the camber plates to be removed from the car. Price is for each bushing.

This item fits the following BMWs:
2001-2006 E46 BMW M3 with Front Turner Street Camber Plate

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Powerflex Black Series - Corporate Logo
T#:376409
Part#: PFR5-504-15BX2
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:
1986 - 1994 E32 730i 735i 735iL 740i 740iL 750iL
1989 - 1995 E34 525i, 530i, 535i, 540i, M5, Touring
1992-1999 E36 318i 318is 318ti 320i 323i 325i 325is 328i 328is M3
1996 - 2004 E39 Sedan 525i 528i 530i 540i 
1999 - 2001 E46 Convertible 323ci 325ci 330ci
2002-2006 E46 Convertible 325ci 330ci
1998 - 2001 E46 323ci 325ci 330ci M3
2002 - 2006 E46 325ci 330ci
1998 - 2001 E46 Touring 323i 325i
2002 - 2006 E46 Touring 325i 325xi
1998 - 2001 E46 Sedan 320i 323i 325i 328i 330i
2002 - 2006 E46 Sedan 320i 325i 325xi 330i 330xi

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Turner Motorsport - Corporate Logo
T#:304089
Part#: TSU4680SPA
In Stock
Sale - Save 20% $ 116.38

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

$ 93.10 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 116.38

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

$ 93.10 USD
Free Shipping on orders $49 and up

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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Powerflex Black Series - Corporate Logo
T#:384016
Part#: PFR5-4609-215BX2
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. 

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

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JT Design - Corporate Logo
T#:1386
Part#: JTD909-75-KIT
Ships on Sep 16, 2026
$ 32.00 USD
Free Shipping on orders $49 and up
The bushings in the Aluminum Rear Shock Tower Mounts (#JTD909) and the Repair Shop Rear Shock Mounts (#JRDRP) are replacable. Simply disassemble the shocks and mounts, replace the bushings, and reassemble. On the JTD909 the shock mount doesn't even have to be removed from the chassis. This set includes enough bushings to replace bushings on both the left and right mounts (4 total).
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Rod End Boot (14-18mm) - Priced Each
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:599632
Part#: RERS3
In Stock
Sale - Save 43% $ 27.99

This product was last offered at the strikethrough price on
03-27-2026

$ 16.00 USD
Free Shipping on orders $49 and up
Sale - Save 43%
$ 27.99

This product was last offered at the strikethrough price on
03-27-2026

$ 16.00 USD
Free Shipping on orders $49 and up
Extend the life of your heim joints with this flexible rubber protective boot. Designed to fit 14mm–18mm spherical bearings and rod ends, it shields critical components from dirt, moisture, and road debris. Keeping contaminants out helps ensure consistent performance and reduces wear over time.
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E46 Front Subframe Reinforcement Kit
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:631
Part#: TDR4675F99
In Stock
Sale - Save 77% $ 79.99

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

$ 18.25 USD
Free Shipping on orders $49 and up
Sale - Save 77%
$ 79.99

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

$ 18.25 USD
Free Shipping on orders $49 and up
Made in the USA The motor mount area on a subframe is one of those easily-forgotton areas that may be hiding a serious problem. The subframe on the E46 has a gusset ('ear') welded on for the motor mounts. These gussets take the stress of the motor mount as the engine torques (more upgrades = more torque = more stress). Worn motor mounts only transfer more stress to the subframe. Unfortunately, the sheetmetal will fatigue over time even though the gusset is reinforced from the factory. Check for cracks along the welds and an uneven plane from the subframe to the gusset. A total failure of the guesset will shift your engine to the side and forward, taking out many other components along the way and leading to a very costly repair.

The next time you replace the motor mounts, oil pan gasket, checking your oil pump nut, or any other time you drop the front subframe, you should install these reinforcements. This kit comes with steel reinforcing plates that are welded to the underside of the guesset as well as plates to close off the bottom of the gusset for extra strength. Instructions included.

This item fits the following BMWs:
1999-2005 E46 BMW 323i 323ci 325i 325ci 328i 328ci 330i 330ci M3
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Powerflex Black Series - Corporate Logo
T#:54388520
Part#: PFF5-5601-60BX2
Ships in 1 Business Day
New Item
$ 220.99 USD
Free Shipping on orders $49 and up
Lock down your front axle geometry. This Black Series 60mm hybrid aluminum/polyurethane kit increases bushing stiffness by 190%, guaranteeing track-ready front-end control and eliminating alignment drift under threshold braking.
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Rear Suspension Bushing Kit (Street+)(Solid/Poly) - E46 M3
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:55569546
Part#: TMS11755BKT
Ships on Sep 29, 2026
New Item
Sale - Save 26% $ 1,357.99

This product was last offered at the strikethrough price on
07-28-2026

$ 999.99 USD
Free Shipping on orders $49 and up
Sale - Save 26%
$ 1,357.99

This product was last offered at the strikethrough price on
07-28-2026

$ 999.99 USD
Free Shipping on orders $49 and up