Do these BMW G8x carbon ceramic rotors require new calipers or brackets?

No. The BMW G8x carbon ceramic rotors rear set is a direct plug-and-play upgrade for the factory iron-brake hardware — no caliper swap, bracket changes, or recalibration required.

My G8x has factory carbon ceramic brakes. Will this fit?

No. The BMW G8x carbon ceramic rotors rear set is an iron-to-CCB conversion designed only for cars that left the factory with iron brakes. If your car already has factory CCB, this rotor is not compatible as a direct bolt-on.

Why upgrade the rear axle to BMW G8x carbon ceramic rotors?

The rear discs are smaller and concentrate heat faster, so they are typically the first to fade on track. The BMW G8x carbon ceramic rotors rear set keeps rear temperatures dramatically lower than steel, maintaining consistent brake bias and fade-free performance from the first session to the last.

What pads are recommended with these BMW G8x carbon ceramic rotors?

MMX pairs these rotors with the Pagid RSL29 carbon ceramic pad compound, developed specifically for MMX carbon ceramic discs and available as the matching rear pad set (MMR27-1610-R) linked in the Notes section.

Can I run just the rear BMW G8x carbon ceramic rotors without the front?

MMX recommends converting both axles together to keep thermal behavior and brake balance consistent front to rear. Pairing with the matching 380x36mm front carbon ceramic rotor (MMR30-1603F) completes the full iron-to-CCB conversion.

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Description

MMX Carbon Ceramic Rear Rotor Conversion 370x24mm for G8x BMW M2, M3, and M4

BMW G8x carbon ceramic rotors rear set from MMX Performance is the matching rear-axle component to the MMX iron-to-CCB front conversion, bolting directly to the OE iron-brake hardware on the G87 M2, G80 M3, and G82/G83 M4. On a hard-driven G8x, the rear axle is where steel rotors hit their thermal limit first. The smaller rear discs concentrate heat faster, causing fade and brake bias drift that compound through consecutive heavy braking events. The BMW G8x carbon ceramic rotors rear set flips that limit with dramatically lower operating temperatures, minimal fade from the first stop to the last lap of a hot session, and consistent rear brake balance throughout. At 4.45kg per disc, these are 46% lighter than the factory steel unit, reducing unsprung and rotating mass so the rear axle responds faster and the car feels more immediate on corner entry. The 2-piece floating construction pairs the carbon ceramic rotor ring with a separate anodized black hat, eliminating the warping and cracking common to single-piece rotors under sustained thermal load. A cross-drilled face evacuates gas and pad material under hard use. Bolts directly to factory iron-brake calipers and hardware with no caliper swap, bracket changes, or recalibration required. Pairs with the Pagid RSL29 carbon ceramic pad compound developed specifically for MMX carbon ceramic discs.

Features

True iron-to-CCB rear conversion bolts to factory iron-brake calipers and hardware
No caliper swap, bracket changes, or recalibration required
Carbon ceramic construction runs dramatically cooler than steel with minimal fade
4.45kg per disc 46% lighter than the OE steel unit
Reduces unsprung and rotating mass for faster rear-axle response
2-piece floating design (carbon ceramic ring + separate anodized black hat)
Cross-drilled face evacuates gas and pad material under hard use
1-year manufacturer warranty against defects in materials and workmanship

Applications

BMW M2: G87 | 2023-present
BMW M3: G80 | 2021-present
BMW M4: G82, G83 | 2021-present

Notes

Fits G8x M cars with factory iron brakes only. Cars equipped with factory carbon ceramic brakes (CCB) cannot use this rotor as a direct bolt-on
Pairs with the 380x36mm front carbon ceramic rotor (MMR30-1603F) for a full iron-to-CCB conversion, and with the Pagid RSL29 carbon ceramic rear pad set (MMR27-1610-R).
Contact us with your build details if you are unsure of your factory brake configuration

Frequently Asked Questions

Do these BMW G8x carbon ceramic rotors require new calipers or brackets? No. The BMW G8x carbon ceramic rotors rear set is a direct plug-and-play upgrade for the factory iron-brake hardware — no caliper swap, bracket changes, or recalibration required.
My G8x has factory carbon ceramic brakes. Will this fit? No. The BMW G8x carbon ceramic rotors rear set is an iron-to-CCB conversion designed only for cars that left the factory with iron brakes. If your car already has factory CCB, this rotor is not compatible as a direct bolt-on.
Why upgrade the rear axle to BMW G8x carbon ceramic rotors? The rear discs are smaller and concentrate heat faster, so they are typically the first to fade on track. The BMW G8x carbon ceramic rotors rear set keeps rear temperatures dramatically lower than steel, maintaining consistent brake bias and fade-free performance from the first session to the last.
What pads are recommended with these BMW G8x carbon ceramic rotors? MMX pairs these rotors with the Pagid RSL29 carbon ceramic pad compound, developed specifically for MMX carbon ceramic discs and available as the matching rear pad set (MMR27-1610-R) linked in the Notes section.
Can I run just the rear BMW G8x carbon ceramic rotors without the front? MMX recommends converting both axles together to keep thermal behavior and brake balance consistent front to rear. Pairing with the matching 380x36mm front carbon ceramic rotor (MMR30-1603F) completes the full iron-to-CCB conversion.

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, often putting 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.

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MMX Carbon Ceramic Rear Rotor Conversion 370x24mm for G8X BMW M2 / M3 / M4 [MMR30-1604R]

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MMX Carbon Ceramic Rear Rotor Conversion 370x24mm for G8x BMW M2, M3, and M4

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About MMX Performance

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