Do I need the BILSTEIN B1 Active to Passive Conversion Kit?

You need the B1 Active to Passive Conversion Kit if your G29 Z4 or A90 GR Supra has factory electronic damping and you are fitting non-electronic dampers, such as BILSTEIN EVO T1 coilovers. Without it, removing the factory electronic dampers triggers warning indicators. Cars built without electronic damping do not need it.

Is any wiring needed to install the kit?

BILSTEIN describes the kit as plug and play with the factory wiring harness, and it supplies all required components and instructions in the box. The kit goes in while the dampers are being changed, so it is simplest to have it fitted during the coilover installation itself.

Does one kit cover front and rear?

Yes. BILSTEIN lists the kit for the front and rear with a quantity of one per vehicle, so a single kit handles the conversion for the whole car. It is specific to the shared G29 Z4 and A90 GR Supra platform and is not meant for other BMW or Toyota models.

Which model years does BILSTEIN list?

BILSTEIN lists the BMW Z4 sDrive30i from 2019 and the M40i from 2020, both through 2026, and the Toyota GR Supra from 2020 through 2026, including the Launch Edition, A91 Edition, A91-MT Edition, 45th Anniversary Edition and MkV Final Edition.

What warranty covers the conversion kit?

BILSTEIN covers its B1 component parts, including this conversion kit, with its Limited 90-Day Warranty. The kit is made in Germany, and Bulletproof Automotive handles any warranty claim with BILSTEIN for the owner, so support comes from the place the kit was bought.

Description

Additional Info

Shipping policy

BP PRICING DIFFERENCE

Reviews

Product Inquiry

Description

BILSTEIN B1 Active to Passive Conversion Kit for G29 BMW Z4 and A90 Toyota GR Supra

BILSTEIN’s B1 Active to Passive Conversion Kit allows non-electronic dampers to be installed on a G29 BMW Z4 or A90 Toyota GR Supra that left the factory with electronic damping. It connects plug and play to the factory wiring harness and stops the warning indicators that appear once the factory electronic dampers are removed. BILSTEIN designs each of its conversion kits for one platform, and this one covers the shared Z4 and GR Supra chassis.

Design and Performance

Removing the factory electronic dampers from these cars triggers warning indicators on the dash. The conversion kit is what lets a passive coilover kit, such as BILSTEIN EVO T1, go onto a car built with electronic suspension and keep the dash clear afterwards. BILSTEIN supplies all required components and instructions, and one kit converts the front and rear of the car.

Features

Allows non-electronic dampers on a G29 Z4 or A90 GR Supra built with factory electronic damping
Plug and play with the factory wiring harness
Stops the warning indicators triggered by removing the factory electronic dampers
The B1 Active to Passive Conversion Kit is made in Germany, includes all components and instructions, and carries the BILSTEIN Limited 90-Day Warranty

Specifications

Function: Active to passive suspension conversion
Connection: Plug and play with the factory wiring harness
Position: Front and rear
Quantity per vehicle: 1
Country of origin: Germany
Warranty: BILSTEIN Limited 90-Day Warranty

Applications

BMW Z4 sDrive30i: G29 | 2019-2026
BMW Z4 M40i, including sDrive M40i and M40i First Edition: G29 | 2020-2026
Toyota GR Supra Base and Premium: A90 | 2020-2026
Toyota GR Supra Launch Edition: A90 | 2020
Toyota GR Supra A91 Edition: A90 | 2021-2022
Toyota GR Supra A91-MT Edition: A90 | 2023
Toyota GR Supra 45th Anniversary Edition: A90 | 2024
Toyota GR Supra MkV Final Edition: A90 | 2026

Notes

For cars with factory electronic damping that are being fitted with non-electronic dampers
BILSTEIN requires this kit on cars with electronic suspension fitted with the EVO T1 Coilovers for G29 BMW Z4 and A90 Toyota GR Supra
Sold individually: one kit per car, covering front and rear

Frequently Asked Questions

Do I need the BILSTEIN B1 Active to Passive Conversion Kit? You need the B1 Active to Passive Conversion Kit if your G29 Z4 or A90 GR Supra has factory electronic damping and you are fitting non-electronic dampers, such as BILSTEIN EVO T1 coilovers. Without it, removing the factory electronic dampers triggers warning indicators. Cars built without electronic damping do not need it.
Is any wiring needed to install the kit? BILSTEIN describes the kit as plug and play with the factory wiring harness, and it supplies all required components and instructions in the box. The kit goes in while the dampers are being changed, so it is simplest to have it fitted during the coilover installation itself.
Does one kit cover front and rear? Yes. BILSTEIN lists the kit for the front and rear with a quantity of one per vehicle, so a single kit handles the conversion for the whole car. It is specific to the shared G29 Z4 and A90 GR Supra platform and is not meant for other BMW or Toyota models.
Which model years does BILSTEIN list? BILSTEIN lists the BMW Z4 sDrive30i from 2019 and the M40i from 2020, both through 2026, and the Toyota GR Supra from 2020 through 2026, including the Launch Edition, A91 Edition, A91-MT Edition, 45th Anniversary Edition and MkV Final Edition.
What warranty covers the conversion kit? BILSTEIN covers its B1 component parts, including this conversion kit, with its Limited 90-Day Warranty. The kit is made in Germany, and Bulletproof Automotive handles any warranty claim with BILSTEIN for the owner, so support comes from the place the kit was bought.

About BILSTEIN

BILSTEIN was founded in 1873 by August Bilstein in Altenvoerde, now Ennepetal, Germany, where its engineers are still based. In 1957 it fitted the first monotube gas pressure shock absorber to a Mercedes-Benz series production car, and Audi, BMW, Porsche and Volkswagen are among the carmakers that have used its dampers as original equipment since. BILSTEIN develops its suspension on its own test circuit in Papenburg and on the Nürburgring Nordschleife, and it has been part of thyssenkrupp since 2005.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

Reviews

There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

Product Inquiry

First Name (*required)

Last Name (*required)

Your E-Mail (*required)

Telephone Number (*required)

Country (*required)

Vehicle Year / Make / Model (*required)

Please Explain What do you want to do with your vehicle

Additional Information (optional)

I agree to the terms & conditions and privacy policy and to have Bulletproof Automotive LLC contact me for promotion, marketing and other purposes via email, phone or SMS message.

BILSTEIN B1 Active to Passive Conversion Kit for G29 BMW Z4 and A90 Toyota GR Supra [14-292408]

Guaranteed Safe Checkout

BILSTEIN B1 Active to Passive Conversion Kit for G29 BMW Z4 and A90 Toyota GR Supra

Design and Performance

Features

Specifications

Applications

Notes

Frequently Asked Questions

About BILSTEIN

Reviews