Why upgrade the BMW F8x M3 M4 control arm bushings to spherical bearings?

The factory rubber front control arm bushings flex under load, allowing the front toe geometry to shift dynamically during hard braking and cornering. This introduces steering vagueness and instability at the limit. The MMX BMW F8x M3 M4 control arm bushings replace the rubber with rigid spherical bearings that lock geometry in place, eliminating deflection and giving sharper, more predictable handling.

Are these suitable for daily driving or track use only?

The MMX spherical bearing conversion is used on both street and track. The improvement in steering feedback and braking stability is noticeable on public roads as well as on circuit. NVH (noise, vibration, harshness) will increase compared to rubber bushings, which is expected with any spherical bearing conversion.

Do the BMW F8x M3 M4 control arm bushings fit the F87 M2 and F83 M4 Convertible?

Yes to the F87 M2 (2016-2021). The F83 M4 Convertible fitment has not been confirmed; do not order for the F83 without verifying compatibility first.

What tools are required for installation?

A hydraulic or fly press is required to press the bearings into the control arm. A custom 3D-printed press tool is included in the kit to protect the bearing face during pressing. Professional installation is strongly recommended.

What is included in the kit?

The kit includes two spherical bearing assemblies (one pair), stainless steel spacers, and a custom 3D-printed press tool. It covers one axle (front).

Description

Additional Info

Shipping policy

BP PRICING DIFFERENCE

Reviews

Product Inquiry

Description

MMX Front Control Arm Spherical Bearings for F8x BMW M2 / M3 / M4

BMW F8x M3 M4 control arm bushings from MMX Performance replace the factory rubber front control arm bushings on the F87 M2, F80 M3, and F82 M4 with a motorsport-grade spherical bearing conversion, eliminating the flex, deflection, and progressive wear that make OEM rubber bushings a handling liability under hard use. The factory rubber allows the front toe to shift dynamically under braking and cornering load, introducing vagueness and instability at the limit; the MMX spherical bearing units lock geometry in place for sharper turn-in, improved steering feedback, and more consistent braking behavior. Each housing is CNC-machined from anodized 7075 aluminum and paired with stainless steel spacers for long-term durability. A high-quality spherical bearing is pressed into each housing, and a custom 3D-printed press tool is included to protect the bearing during installation. The result is a direct OEM replacement that improves tire contact consistency, extends tire life, and translates the chassis’s full potential to the driver.

Features

Replaces OEM rubber front control arm bushings with motorsport-grade spherical bearings
CNC-machined from anodized 7075 aluminum with stainless steel spacers
Eliminates bushing deflection under hard braking and aggressive cornering
Stabilizes front toe under load for sharper turn-in and consistent braking
Improves steering feedback and response
Reduces tire wear and maintains optimal tire contact patch
Includes custom 3D-printed press tool to protect bearing during installation
Direct OEM replacement; sold as a pair

Applications

BMW M2: F87 | 2016-2021
BMW M3: F80 | 2014-2018
BMW M4 Coupe: F82 | 2014-2020

Notes

Fitment not confirmed on F83 M4 Convertible models
A hydraulic or fly press is required for installation. Professional installation is strongly recommended
Images are generic; actual product may vary

Frequently Asked Questions

Why upgrade the BMW F8x M3 M4 control arm bushings to spherical bearings? The factory rubber front control arm bushings flex under load, allowing the front toe geometry to shift dynamically during hard braking and cornering. This introduces steering vagueness and instability at the limit. The MMX BMW F8x M3 M4 control arm bushings replace the rubber with rigid spherical bearings that lock geometry in place, eliminating deflection and giving sharper, more predictable handling.
Are these suitable for daily driving or track use only? The MMX spherical bearing conversion is used on both street and track. The improvement in steering feedback and braking stability is noticeable on public roads as well as on circuit. NVH (noise, vibration, harshness) will increase compared to rubber bushings, which is expected with any spherical bearing conversion.
Do the BMW F8x M3 M4 control arm bushings fit the F87 M2 and F83 M4 Convertible? Yes to the F87 M2 (2016-2021). The F83 M4 Convertible fitment has not been confirmed; do not order for the F83 without verifying compatibility first.
What tools are required for installation? A hydraulic or fly press is required to press the bearings into the control arm. A custom 3D-printed press tool is included in the kit to protect the bearing face during pressing. Professional installation is strongly recommended.
What is included in the kit? The kit includes two spherical bearing assemblies (one pair), stainless steel spacers, and a custom 3D-printed press tool. It covers one axle (front).

About MMX Performance

MMX Performance is a UK-based specialist in performance parts for BMW and MINI vehicles, crafting high-quality upgrades that blend precision engineering, rigorous testing, and motorsport heritage. Driven by enthusiast culture, MMX designs its products in the UK and puts them through track validation to ensure durability, fitment accuracy, and on-road performance. Their catalog spans drivetrain components, spacers, hardware, and chassis enhancements, all tailored to elevate both the driving experience and visual appeal of BMW and MINI models.

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.

MMX Front Control Arm Spherical Bearings for F8x BMW M2 / M3 / M4 [MMR45-1001]

Guaranteed Safe Checkout

MMX Front Control Arm Spherical Bearings for F8x BMW M2 / M3 / M4

Features

Applications

Notes

Frequently Asked Questions

About MMX Performance

Reviews