What does the Karbonius G90 carbon strut brace do?

The Karbonius G90 carbon strut brace ties the front strut towers together on the G90 and G99 BMW M5, reducing front-end flex under cornering load. This sharpens steering response and turn-in while cutting weight versus the factory brace.

What finishes are available?

The Karbonius G90 carbon strut brace set is offered in gloss carbon or matte carbon. Choose the finish that best matches your engine bay at checkout.

What is it made of and where?

The Karbonius carbon strut brace is made from pre-preg carbon fiber and manufactured in Spain by Karbonius, using the same in-house process behind their renowned BMW carbon components.

Which cars does it fit?

The Karbonius carbon strut brace set fits the G90 and G99 BMW M5, bolting into the factory strut tower locations.

The Karbonius G90 carbon strut brace is sold as a set by finish option, providing the brace hardware needed for one car.

Description

Additional Info

Shipping policy

BP PRICING DIFFERENCE

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Description

Karbonius Carbon Fiber Strut Brace Set for G90 / G99 BMW M5

The Karbonius G90 carbon strut brace set is engineered to increase chassis rigidity while meaningfully reducing weight over the factory brace on the BMW G90 and G99 M5. Designed and manufactured in Spain from pre-preg carbon fiber, the brace ties the strut towers together to reduce front-end flex under cornering load, sharpening steering response and turn-in feel. Offered in gloss or matte carbon to match your engine bay. Choose gloss or matte carbon finish.

Features

Pre-preg carbon fiber, designed and made in Spain by Karbonius
Increases chassis rigidity by tying the strut towers together
Meaningful weight reduction over the factory brace
Sharper steering response and turn-in feel
Available in gloss or matte carbon finish

Specifications

Material: Pre-preg carbon fiber
Origin: Spain
Finish options: Gloss carbon or matte carbon
Sold as: Carbon strut brace set

Applications

BMW M5 (G90): 2025-present
BMW M5 (G99): 2025-present

Notes

Bolt-in fitment to the factory strut tower locations. Sold as a carbon strut brace set; choose your finish.

Frequently Asked Questions

What does the Karbonius G90 carbon strut brace do? The Karbonius G90 carbon strut brace ties the front strut towers together on the G90 and G99 BMW M5, reducing front-end flex under cornering load. This sharpens steering response and turn-in while cutting weight versus the factory brace.
What finishes are available? The Karbonius G90 carbon strut brace set is offered in gloss carbon or matte carbon. Choose the finish that best matches your engine bay at checkout.
What is it made of and where? The Karbonius carbon strut brace is made from pre-preg carbon fiber and manufactured in Spain by Karbonius, using the same in-house process behind their renowned BMW carbon components.
Which cars does it fit? The Karbonius carbon strut brace set fits the G90 and G99 BMW M5, bolting into the factory strut tower locations.
How is it sold? The Karbonius G90 carbon strut brace is sold as a set by finish option, providing the brace hardware needed for one car.

About Karbonius

Karbonius Composites is a Spanish carbon fiber manufacturer known for producing some of the most accurate and highest quality carbon components for BMW M vehicles. Every part is engineered and manufactured in-house from pre-preg carbon fiber and cured in an autoclave, the same process that produced the legendary E46 M3 CSL airbox. The result is OEM-level fitment, motorsport-grade strength, and a depth of finish that mass-produced carbon cannot match.

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.

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