GPM Racing Medium Carbon Steel+Aluminium 7075 Front/Middle/Rear Diff Case for Arrma 1/7 Mojave EXB (MAJ011)

Aftermarket differential housing for ARRMA Mojave vehicles

This aftermarket differential housing is manufactured to fit ARRMA 1/7 and 1/8 desert truck platforms. The external section is medium carbon steel to improve wear resistance at gear and bearing interfaces, while the centre is machined from 7075 aluminium to reduce rotating mass without losing mounting stability. A rubber sealing ring is included to limit contamination and retain gearbox lubricant.

Intended for drivers who demand durability, the unit helps stabilise gear mesh under heavy loads, reducing premature wear on internal parts. It is a direct-replacement design for compatible ARRMA models; confirm fitment with your chassis and axle layout prior to installation.

Assembly notes: remove the axle or centre gearbox per the vehicle manual, transfer internal differential parts into the new case, install the supplied sealing ring, and torque fasteners to match original hardware recommendations. Check gear backlash and lubrication after assembly and re-inspect after the first run.

Packing includes

• Diff case – 1pcs
• Grade 12.9 black flat head screw 3×8 – 8pcs
• Rubber sealing ring – 1pcs

Original Name / Part No:

ARA310983

Compatible Models

• ARRMA 1/7 MOJAVE 4WD EXTREME BASH ROLLER DESERT TRUCK(EXB)-ARA7204
• ARRMA 1/8 4WD RTR OUTCAST 6S BLX STUNT TRUCK BRUSHLESS
• ARRMA 1/8 4WD TALION 6S BLX -ARA106048
• ARRMA 1/8 4WD KRATON 6S BLX SPEED MONSTER TRUCK -ARA106040T1
• ARRMA 1/8 4WD NOTORIOUS 6S STUNT TRUCK -ARA106044T2
• ARRMA 1/8 4WD OUTCAST 6S BLX -ARA106060
• ARRMA 1/7 4WD MOJAVE 6S BLX DESERT TRUCK-ARA10058T1/T2
• ARRMA 1/8 4WD KRATON EXTREME BASH ROLLER SPEED MONSTER TRUCK-ARA106053
• ARRMA 1/7 4WD FIRETEAM TACTICAL UNIT 6S BLX SPEED ASSAULT VEHICLE-ARA7618
• ARRMA 1/8 KRATON 6S V5 4WD BLX SPEED MONSTER TRUCK-ARA8608V5
• ARRMA 1/8 NOTORIOUS 6S V5 4WD BLX STUNT TRUCK-ARA8611V5
• ARRMA 1/7 MOJAVE 6S V2 4X4 BLX DESERT TRUCK WITH SPEKTRUM FIRMA RTR-ARA7604V2
• ARRMA 1/8 OUTCAST 6S BLX 4WD BRUSHLESS STUNT TRUCK WITH SPEKTRUM RTR-ARA106042
• ARRMA 1/8 TALION 6S BLX 4WD EXTREME BASH SPEED TRUGGY RTR-ARA8707
• ARRMA 1/8 KRATON 6S BLX 4X4 EXTREME BASH SPEED MONSTER TRUCK RTR-ARA8708T1
• ARRMA 1/7 BIG ROCK 6S 4X4 Blx Monster Truck Rtr-ARA7612
• ARRMA 1/8 KRATON 6S V6 4X4 BLX BRUSHLESS SPEED MONSTER TRUCK RTR-ARA8608V6
• ARRMA 1/8 NOTORIOUS 6S V6 4X4 BLX BRUSHLESS STUNT TRUCK RTR-ARA8611V6
• ARRMA 1/7 LIMITLESS 8S AVC 4X4 RTR BRUSHLESS STREET SPEED-ARA7816
• ARRMA 1/7 Mojave 6S 4X4 RTR Brushless Desert Truck-ARA7604V3
• ARRMA 1/7 Mojave 6S EXB 4X4 RTR Brushless Desert Truck-ARA7704V3

A direct-fit aftermarket replacement aimed at ARRMA desert truck owners seeking better sealing and increased durability to preserve gear life during heavy use.

Does this replace the stock differential housing exactly?

It is designed to be a direct replacement for the listed models, but confirm your chassis and axle layout before installation.

What materials are used in the MAJ011 housing?

The outer housing is medium carbon steel and the centre section is 7075 aluminium, with a rubber sealing ring included.

Are the screws provided in the package?

Yes. The package includes the Grade 12.9 black flat head screws 3×8 in the quantity shown in the packing list.

Will I need any special tools to fit the housing?

Standard hobby tools are sufficient; ensure correct torque is applied and check gear mesh and lubrication after assembly. Write Product Review Please sign in your account before you can write any review. Sign In Close

Made to order: GPM Racing parts are shipped to us from GPM’s factory, so please allow around 14 days for dispatch.