1. Coil Springs Auto Parts For Sale
  2. sku: 16344871106077622
  3. BMW 50421

BMW 50421 Sport Spring

fits model: Z4, E85. make: Bmw. year: 2003–2008.

50421 H&r For 03-08 Bmw Z4 E85 Sport Spring

( Manufacturer Part Number: 50421 ), ( Type: Coil Spring Lowering Kit ), ( Performance Part: Yes )

Review BMW 50421r Sport Spring fits Z4 E85 2003–2008

Introducing the 50421 Series Sport Springs for the BMW Z4 (model years 03-08), a high-performance upgrade that is sure to enhance the driving dynamics of your beloved roadster. Designed specifically for BMW Z4 owners seeking a more agile and responsive driving experience, these springs offer several noteworthy benefits.

First and foremost, the 50421 Sport Springs provide a significant reduction in vehicle height, resulting in a lower center of gravity. This reduction not only improves the vehicle's overall aesthetics but also reduces the risk of body roll during cornering, allowing for increased stability and better handling.

Manufactured from high-quality, heat-treated chromium-silicon steel, these springs have been engineered to provide superior strength and durability. The progressive rate design ensures a balanced and controlled ride, providing optimal balance between comfort and performance. The springs are also tested to ensure they meet or exceed the original equipment specifications.

The installation process is straightforward and can typically be completed in a few hours with basic hand tools. No modifications to the vehicle are required, and the springs are fully compatible with the original shock absorbers and struts.

It is important to note that the installation of these springs may result in a stiffer ride compared to the stock suspension. This is a common characteristic of performance springs and should be considered before making a purchase. However, the improved handling and reduced body roll are well worth the trade-off for those seeking a more engaging driving experience.

In conclusion, the 50421 Series Sport Springs for the BMW Z4 (model years 03-08) are an excellent investment for those looking to enhance the performance and handling of their vehicle. With their superior strength, durability, and progressive rate design, these springs offer a balanced ride, improved stability, and increased agility, making them an essential upgrade for any BMW Z4 enthusiast.

Buying aftermarket springs, such as the 50421 for the 03-08 BMW Z4 E85 Sport model, can offer several benefits and drawbacks. below are some potential pros and cons:

Pros:

1. Enhanced handling: Aftermarket springs can improve the vehicle's handling by lowering the center of gravity and reducing body roll during cornering.

2. Improved ride quality: Some aftermarket springs offer a stiffer ride, which can make the vehicle feel more responsive and agile.

3. Customization: Aftermarket springs allow for greater customization of the vehicle's suspension system, allowing owners to tailor the handling and ride quality to their preferences.

4. Cost-effective: Compared to buying a new suspension system, aftermarket springs can be a more cost-effective way to upgrade the vehicle's handling.

Cons:

1. Risk of damage: Aftermarket springs can be more brittle and prone to damage than original equipment springs, which can lead to expensive repairs or replacements.

2. Installation complexity: Installing aftermarket springs can be a more complex process than installing original equipment springs, which may require specialized tools and expertise.

3. Potential alignment issues: Changing the springs can also affect the vehicle's alignment, which may require additional adjustments and expenses.

4. Warranty issues: Installing aftermarket springs can void the vehicle's warranty, which may be a concern for some owners.

Conclusion:

In conclusion, buying aftermarket springs for a 03-08 BMW Z4 E85 Sport can offer several benefits, including enhanced handling, improved ride quality, customization, and cost-effectiveness. However, it also comes with potential drawbacks, such as the risk of damage, installation complexity, potential alignment issues, and warranty concerns.

Ultimately, the decision to buy aftermarket springs depends on the individual's priorities, budget, and level of expertise. If the owner is looking for a significant handling upgrade and is comfortable with the installation process, aftermarket springs may be a good option. However, if the owner values reliability and ease of use, they may prefer to stick with original equipment springs.

Recommendation:

If you decide to purchase aftermarket springs for your BMW Z4 E85 Sport, be sure to do your research and choose a reputable brand with a good track record for quality and durability. Additionally, consider the installation process and any potential alignment issues, and be prepared for the additional costs and time involved. If you're unsure about the installation process, consider hiring a professional to ensure a proper installation.

Details:

H R'sport Springs lower the vehicles of gravity and reduce body roll for better handling. If you are only looking to improve one part of your vehicles suspension, cannot go wrong with installing Sport Springs. Enhance the look of your vehicle with a reduced fender well gap. Front Lowering: 1.5 IN, Approx.

The progressive spring rate design provides superb ride quality and comfort. Manufacturer:R, Part Number: 50421, condition: New:R Springs Sport Spring Kit kits Ares number one selling product. 2003 2008 BMW Z4.

part #: 50421 prices

  • $249.22-$317.07

specifications coilspringi:

  • for models: Z4, E85
  • for makes: Bmw
  • for years: 2003-2008
  • mpn: 50421
  • type: Coil Spring Lowering Kit
  • performance part: Yes

shipping coilspringi:

  • service: Standard
  • type: Fixed
  • class: Standard
  • cost: $0.00
  • transit: 4-7 Days

seller coilspringi:

  • rating: 99.5%
  • # reviews: 104534
  • city: San Leandro, California

general coilspringi:

  • condition: New
  • Car Truck Parts Accessories > Steering Suspension > Leaf Coil Springs

offer coilspringi:

  • started: May 23, 2025
  • options: Ship-to-home
  • quantity: 5
  • availability: In Stock
  • sold: 0

payments coilspringi:

  • other
  • wallet: Google-pay
  • credit card: Visa

returns coilspringi:

  • paid by: Seller
  • time: 30 Days
  • policy: Returns Accepted
for models: z4, e85, for makes: bmw, for years: 2003-2008, type: coil spring lowering kit, performance part: yes,
category: auto parts > car truck parts accessories > steering suspension > leaf coil springs, sku: 16344871106077622,
Bmw 50421 Is Similar To:
  • (32.9% similar) More detailed information is available in the compatibility's section above. The price is as it states on. Assuming it cost Europa's. Fitment please see the compatibility's section. Bmw: 325I this coil spring - front is a brand new part manufactured by duplex. Cores: any cores must be in rebuild ...(June 30th, 2018)
  • (30.6% similar) No further shipping discounts or savings are available on those items. Standard shipping is sent via FedEx smart post which a 5-9 day economy service. Fitment please see the compatibility's section. 95 and is only available to the USA. Some items on are significantly discounted off our regular ...(December 10th, 2018)
  • (40.5% similar) For some heavier items shipping starts at on are significantly discounted off our regular retail price. Bmw: 740I 740IL this coil spring - rear is a brand new part manufactured by duplex. Fitment please see the compatibility's section. More detailed information is available in the compatibility's ...(March 5th, 2018)
  • (35.3% similar) 95 and is only available to the USA. The price is as it states on. More detailed information is available in the compatibility's section above. Discounted shipping and combined is available on our web site. Assuming it cost to ship the parts, you would get a credit of 45. No further shipping ...(November 29th, 2018)
  • (31% similar) Cores: any cores must be in rebuild able condition with sufficient parts to rebuild said core rust, corrosion, OK. And you return Europa's. Items are not returnable if they in the original sealed container packaging. Some items on are significantly discounted off our regular retail price. Shipping ...(June 2nd, 2018)
  • (32.9% similar) The price is as it states on. Discounted shipping and combined is available on our web site. For example, if your original sale total was first. No further shipping discounts or savings are available on those items. Standard shipping is sent via FedEx smart post which a 5-9 day economy service. ...(December 2nd, 2018)
  • (40.5% similar) More detailed information is available in the compatibility's section above. Discounted shipping and combined is available on our web site. Cores: any cores must be in rebuild able condition with sufficient parts to rebuild said core rust, corrosion, OK. 95 and is only available to the USA. Standard...(June 29th, 2018)
  • (37.6% similar) The price is as it states on. No further shipping discounts or savings are available on those items. Discounted shipping and combined is available on our web site. More detailed information is available in the compatibility's section above. Items are not returnable if they in the original sealed ...(August 29th, 2018)
  • (39.6% similar) Fitment information may not be available for all products. More detailed information is available in the compatibility's section above. Standard shipping is sent via FedEx smart post which a 5-9 day economy service. Discounted shipping and combined is available on our web site. The price is as it ...(July 27th, 2018)
  • (32.9% similar) The price is as it states on. At Europa's. Discounted shipping and combined is available on our web site. 95 and is only available to the USA. Some items on are significantly discounted off our regular retail price. To ship the parts, you would get a credit of 45. Shipping most items have standard ...(March 14th, 2018)
  • (32.6% similar) More detailed information is available in the compatibility's section above. Discounted shipping and combined is available on our web site. The price is as it states on. Standard shipping is sent via FedEx smart post which a 5-9 day economy service. Some items on are significantly discounted off our...(September 15th, 2018)
coilspringi logo
5 offers $249.22–$317.07 USD
  • New. Offer #1 priced at $249.22 + $0.00 shipping estimate = $249.22* total. The progressive spring rate design provides superb ride quality and comfort. 2003-08 BMW Z4 E85 1.5 1.25.FREE SHIPPING
  • New. Offer #2 priced at $261.95 + $0.00 shipping estimate = $261.95* total. Sport lowering springs engineered for improved handling and stance. Part Number: .FREE SHIPPING
  • New. Offer #3 priced at $317.07 + $0.00 shipping estimate = $317.07* total. H&R Springs Sport Spring Kit Sport Spring kits are H&R's number one selling product.FREE SHIPPING
  • New. Offer #4 priced at $248.55 + $0.00 shipping estimate = $248.55* total. H&R Springs Coil Spring Lowering Kit H&R Springs Sport Coil Spring Kit For 2003-2008 BMW Z4.FREE SHIPPING
  • New. Offer #5 priced at $214.73 + $29.99 shipping estimate = $244.72* total. H&R Springs. H&R Sport Springs are crafted from a special 54SiCr6 spring steel to ensure quality and performance.+$29.99 shipping

Copyright © coilspringi.com