Complete differential package for the G87 M2, G80 / G81 M3, and G82 / G83 M4: high-capacity baffled sump, dual differential mount, and output shaft heat shields in one track-ready bundle.

BMW RTV sealant required for installation (optional add-on at order)

MMX Ultimate Differential Track Pack for G8X BMW M2 / M3 / M4

The MMX G8X M2 M3 M4 Differential Track Pack bundles all three of MMX’s differential upgrades into one coordinated package for enthusiasts pushing the G8X platform on circuit. The high-capacity baffled sump manages oil temperature, the dual differential mount locks down drivetrain movement, and the output shaft heat shields control heat soak around the assembly. Together they keep the rear differential stable, cool, and consistent through hard braking, acceleration, and sustained high-G cornering.

Features

• Complete differential reliability and thermal-management package for the G8X platform
• Includes the MMX billet high-capacity baffled differential sump (MMR55-1600)
• Includes the MMX dual differential mount (MMR55-1606)
• Includes the MMX rear differential output shaft heat shield set (MMR55-1607)
• Improves differential cooling capacity, drivetrain stability, and long-term reliability
• Direct-fit installation with no permanent modifications required
• 1-year manufacturer warranty against defects in materials and workmanship

G8X M2 M3 M4 Differential Track Pack Specifications

• Sump: CNC-machined 6061-T6 billet, up to 2 liters added capacity, baffled windage tray, -8AN cooler port
• Mount: CNC-machined 6061-T6 billet secondary differential mount
• Heat shields: Rear differential output shaft heat shield set
• Sealant option: Available with BMW RTV sealant (83190404517), choose at order

Applications

• BMW M2: G87 | 2023 to present
• BMW M3: G80, G81 | 2021 to present
• BMW M4: G82, G83 | 2021 to present

Notes

• BMW RTV sealant is required to seal the sump, select the option with sealant if you do not already have it.
• The dual differential mount requires a differential bushing to complete installation (OEM or aftermarket, not included).
• Professional installation recommended. Components are also available individually. Contact us with any fitment questions.

Frequently Asked Questions

What is included in the pack?

The G8X M2 M3 M4 Differential Track Pack includes the billet high-capacity baffled sump, the dual differential mount, and the output shaft heat shield set, everything MMX makes for G8X differential reliability.

Why buy the pack instead of individual parts?

The three components were engineered to work together, the sump and mount integrate with no extra hardware, and the bundle saves money versus buying separately.

Does this stop the track-day diff overheat warning?

Yes, the added capacity, baffling, and cooling are designed to prevent the “Driving Stability Limited” warning that interrupts sessions when OEM diff temperatures climb.

Does it fit xDrive cars?

Yes, RWD and xDrive G8X drivetrains are both supported.

What else do I need for installation?

BMW RTV sealant for the sump (available as an option at order) and a differential bushing for the mount, plus standard workshop tools.

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.