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We have the entire line of products available for building out your own kit, whether you want to upgrade, or find something more affordable, contact us with any questions!
Whether you want to upgrade, add a reservoir, or find something more affordable, contact us with any questions!
View full product specifications
Bilstein 5100 shocks utilize a monotube design, with a 46mm digressive piston, to increase road handling characteristics both on and off-road. The single tube body allows for rapid heat transfer between the shock oil to the shock body, and then dissipated further to reduce shock fade. German engineering combined with US manufacturing ensures optimum performance and longevity for upwards of 100k miles (real customer feedback!). The 5100 series is more compliant in tougher situations and off-road terrain compared to the 4600 series. Factory spec vehicles should use the 4600 series shocks as the valving is more appropriate for daily driven vehicles and pavement environments.
View warranty coverage
Thyssenkrupp Bilstein of America warrants its gas pressure shock absorbers against defects in workmanship and materials for as long as you, the original purchaser, own your car.
If a shock, strut, or coil-over malfunctions and BILSTEIN determines it to be defective, we will either replace it or repair it, depending on the term of the warranty based on the assembly's model type. BILSTEIN from the factory (original equipment), warranty claims must be directed to the vehicle manufacturer.
B4 OE Replacement / B6 / B6 Performance / B8 Performance Plus / B12 Series / B14 (PSS) / B16 (PSS9 & PSS10) / B6 4600 / B8 5100 / B8 5100 (Ride Height Adjustable) / B8 5112 / B8 6112
BILSTEIN warrants to the original retail purchaser that, for the life of each gas pressure shock, this product shall be free from defects in material and workmanship. Proof of purchase is required to process warranty. Please return product to the original place of purchase.
B4 OE Replacement (Air) / Steering Racks
BILSTEIN warrants to the original retail purchaser that, for a period of two (2) years from the date of purchase, the B4 OE Replacement (Air) suspension and Steering Racks shall be free from defects in workmanship and/or material. Proof of purchase is required to process warranty. Please return product to the original place of purchase.
B8 5125 / B8 5150 / B8 5160 / B8 5165 / M 7100 Series / B8 8125 / M 9100 Series / M 9300 Series / BILSTEIN Clubsport® / MOTORSPORTS PRODUCT
BILSTEIN warrants to the original retail purchaser that, for a period of ninety (90) days from the date of purchase, this product shall be free from defects in material and workmanship. Any implied warranty of merchantability, fitness or fitness for particular purpose, except as may be prohibited by applicable law, is likewise limited in duration to ninety (90) days from the date of original retail purchase. Some States do not allow limitations on how long an implied warranty lasts so the above limitation may not apply to you.
This warranty is non-transferable and does not cover normal wear and tear or any other loss, liability or damage resulting from improper alteration, disassembly, handling, installation, service, repair or use of this product. Should this product fail as a result of a defect in materials or workmanship within the warranty period, contact BILSTEIN's Warranty Service Department by telephone at 1(800) 370-9522, or in writing at thyssenkrupp Bilstein of America 14102 Stowe Drive, Poway, California, 92064, for repair or replacement at Manufacturer's option. Do not return this motorsports product to the place of purchase. Proof of purchase is required to process warranty.
The limited warranties set forth above do not cover normal wear and tear and are non-transferable. The following are warranty exclusions:
Original equipment shock absorbers (vehicle manufacturer warranty) -Improper installation -Racing, driving competition or off-road use -Modified use or other than BILSTEIN recommended vehicles -Commercial vehicles -Bent or broken Rods showing abuse or abnormal wear
Surface finish, boot or mounting hardware such as, but not limited to, rubber bushings, as well as labor charges are not covered by any of the foregoing limited warranties. BILSTEIN's liability for a defective shock absorber is limited to replacement of shock with a new or reconditioned BILSTEIN shock absorber. Repair or replacement as provided by this warranty is customer's sole and exclusive remedy in the event of a product failure. Manufacturer shall not be liable for any incidental, consequential or other damages resulting from the disassembly, handling, installation, service, repair or use of this product. Some States do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from State to State.
Note: Other exclusions may or may not apply in certain states or rare circumstances.
Free shipping within the lower 48 United States
All other shipping destinations that are available will be calculated at checkout, or you should contact us prior to your sale - contact us.
Shock Surplus ships to the following destinations, and more:
Contact us for a free direct quote to your location.
Start Your Return Process
We sell only brand new, never-installed, authentic, brand-name parts. If your order arrives damaged, is missing hardware, appears used or pre-installed, or is incomplete in any way, we will jump into action to send replacements. We can usually have replacements sent immediately for these rare cases of damaged, incomplete, or incorrect orders.
Shock Surplus allows returns and exchanges inside of a 30-day window starting from time of receipt by the customer. It is our mission to make every transaction smooth, and fix any issues you may encounter.
We are available to make every transaction flawless for our customers, the Shock Surplus staff is available to guarantee fitment on every part we sell. Shipping costs responsibility are as follows:
Customers that wish to return products in order to exchange for different product will not be subject to a restocking fee. Our staff is on hand to make sure that your first purchase is exactly correct for your needs and vehicle, do not hesitate to contact us prior to your purchase through Live Chat or Email.
To start a return or exchange, please fill out THIS FORM, and be as specific as possible, and someone will be in touch with you in ~1 business day. The typical turnaround for a refund or exchange is 5-10 business days, depending on the complexity of the case. Exchanges are subject to availability of stock; any exchanges proving out of stock will be refunded to the customer.
You should expect to receive your refund within 5-7 business days of our warehouse receiving your return. The amount of time it takes for your refund to show up in your account varies by payment method, but typically takes 1-3 business days. You will also receive a message confirming the refund via the marketplace where the purchase happened. We wish we could speed up the process of funds reaching your payment method following a refund, but it is out of our hands.
If you need to return an item, simply login to your account (top right corner of the screen), view the order using the "Complete Orders" link under the My Account menu, and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item. You can also contact contact us for any return requests.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page.