What's the difference between this and Dinan's other M3/M4 sway bar set?

This set (26mm front / 26mm rear) is engineered specifically for the all-wheel-drive xDrive M3 and M4. Dinan sells a separate RWD-only set (28mm front / 26mm rear) for cars without xDrive. The two aren't interchangeable, since the AWD chassis has different front-end geometry.

Does this fit the RWD M3 or M4?

No. This bar set is built specifically around the AWD xDrive chassis and is not designed for RWD models. If your M3 or M4 is RWD, Dinan's separate RWD-specific sway bar set is the correct fit.

What does the rear bar's adjustability do?

The rear bar has two mounting holes, letting you shift roll stiffness between the front and rear of the car. A softer setting keeps a more neutral balance, while a stiffer setting sharpens rotation for aggressive driving or track days.

How much stiffer are these bars than stock?

The front bar is about 16% stiffer than the factory xDrive unit, and the rear bar ranges from 35-48% stiffer than stock depending on which hole you select, giving a real tuning range without touching springs or dampers.

Can I install this myself?

Dinan's documented labor time is 9.9 hours, and the job requires dropping the subframe to reach the mounting points. Given that, professional installation with a follow-up alignment is strongly recommended over a driveway install.

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Description

Dinan Front and Rear Sway Bar Set 26mm / 26mm for G80 BMW M3 and G82 / G83 M4 xDrive

Name: Dinan xDrive Sway Bar Set | Bulletproof Automotive
Brand: Dinan
SKU: D120-0645
Price: 849.95 USD
Availability: BackOrder

Dinan’s xDrive Sway Bar Set is purpose-built for the all-wheel-drive G80 M3 and G82/G83 M4, replacing the stock front and rear anti-roll bars with stiffer, AWD-specific units that tighten body control without disturbing the factory-tuned all-wheel-drive balance. The rear bar’s two-hole adjustability lets you fine-tune the front-to-rear roll split to suit your driving style.

Built for the AWD Chassis, Not Just Ported Over

The xDrive M3 and M4 carry a different front-end layout than their RWD siblings, so a generic sway bar isn’t a direct fit. Dinan engineered this set specifically around the AWD chassis: the front bar steps up to 26mm (a 16% stiffness increase over the factory bar), and the rear bar also lands at 26mm, adjustable for a 35-48% stiffness increase over stock depending on the hole selected. The result is flatter cornering and sharper transitions while keeping the xDrive system’s traction advantage intact.

Features

Direct-fit front and rear anti-roll bars engineered specifically for the AWD G80/G82/G83 chassis
Rear bar offers 2-hole adjustable mounting to tune the roll stiffness balance
Black polyurethane bushings included, along with the correct grease for installation
Emissions legal for all vehicle types.

Specifications

Material: high-tensile alloy steel
Type: front and rear anti-roll bar set
Front bar: 26mm
Rear bar: 26mm, adjustable
Drivetrain: xDrive all-wheel drive
Bushings: included where applicable

Applications

BMW M3 xDrive: G80 | 2022-present | 3.0L Twin-Turbo I6 S58
BMW M4 xDrive: G82 / G83 | 2022-present | 3.0L Twin-Turbo I6 S58

Notes

This is the xDrive-specific version of Dinan’s M3/M4 sway bar set, distinct from the RWD-only set sold under a separate SKU
Installation requires dropping the subframe; Dinan’s documented labor estimate is 9.9 hours, including a post-install alignment, so professional installation is strongly recommended

Frequently Asked Questions

What’s the difference between this and Dinan’s other M3/M4 sway bar set?
This set (26mm front / 26mm rear) is engineered specifically for the all-wheel-drive xDrive M3 and M4. Dinan sells a separate RWD-only set (28mm front / 26mm rear) for cars without xDrive. The two aren’t interchangeable, since the AWD chassis has different front-end geometry.
Does this fit the RWD M3 or M4?
No. This bar set is built specifically around the AWD xDrive chassis and is not designed for RWD models. If your M3 or M4 is RWD, Dinan’s separate RWD-specific sway bar set is the correct fit.
What does the rear bar’s adjustability do?
The rear bar has two mounting holes, letting you shift roll stiffness between the front and rear of the car. A softer setting keeps a more neutral balance, while a stiffer setting sharpens rotation for aggressive driving or track days.
How much stiffer are these bars than stock?
The front bar is about 16% stiffer than the factory xDrive unit, and the rear bar ranges from 35-48% stiffer than stock depending on which hole you select, giving a real tuning range without touching springs or dampers.
Can I install this myself?
Dinan’s documented labor time is 9.9 hours, and the job requires dropping the subframe to reach the mounting points. Given that, professional installation with a follow-up alignment is strongly recommended over a driveway install.

About Dinan

Founded in 1979, Dinan is North America’s leading BMW tuner, developing, manufacturing, and marketing a full line of high-performance products for BMW, MINI, and Mercedes-Benz. Dinan works through a nationwide network of Authorized Dinan Performance Centers, including select BMW dealerships and independent BMW service and performance shops. The company’s warranty program, introduced in 1996 with BMW of North America’s cooperation, matches BMW’s new car warranty and covers Dinan enhancements and the vehicle itself for up to 4 years or 50,000 miles. That coverage lets BMW owners add real performance without risking their factory warranty. Automotive publications have tested Dinan-enhanced BMWs against some of the world’s most exotic sports cars for three decades, and the results consistently hold up. Despite that performance, Dinan BMWs keep the reliability and everyday civility BMW owners expect. The product line spans engine, driveline, and chassis components across the full BMW lineup, covering acceleration, cornering, and stopping power. Every Authorized Dinan Performance Center can help build anything from a single upgrade to a complete Dinan BMW.

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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Dinan xDrive Sway Bar Set for G80 BMW M3 and G82/G83 M4 [D120-0645]

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Dinan Front and Rear Sway Bar Set 26mm / 26mm for G80 BMW M3 and G82 / G83 M4 xDrive

Built for the AWD Chassis, Not Just Ported Over

Features

Specifications

Applications

Notes

Frequently Asked Questions

About Dinan

Reviews