ARRMA Gorgon diff case & idler gear upgrade MGO1200A by GPM  [MGO1200A]

ARRMA GORGON MEGA Hard Anodized 7075 Alloy Differential Case And Idler Gear set (47/29T/0.8m) - GPM MGO1200A
Price:
NZD$56.65
Brand:
GPM
Model:
MGO1200A
Condition:
Brand New
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alt="ARRMA GORGON MEGA Hard Anodized 7075 Alloy Differential Case And Idler Gear set (47/29T/0.8m) - GPM MGO1200A" title="ARRMA GORGON MEGA Hard Anodized 7075 Alloy Differential Case And Idler Gear set (47/29T/0.8m) - GPM MGO1200A"

7075 alloy differential case designed for ARRMA

This aftermarket assembly is supplied as a differential case and idler gear set that replaces ARRMA part ARA311095, intended for ARRMA 1/10 monster and stadium platforms. Components are CNC-machined from 7075-T6 aluminum and hard anodized to reduce wear while maintaining consistent engagement under hobby driving conditions. The design fits where the original mounting interfaces and 0.8M gear pitch are used.

Focus is on improving gearbox robustness and repeatable mesh rather than changing final drive ratios. In normal RC tuning the set helps limit wear during demanding runs and provides a stable base for other drivetrain adjustments. Follow the chassis assembly layout and fit the supplied bearings and fasteners to complete the unit. Reference model: MGO1200A.

Box contents

  • Diff Case And Idler Gear Set (47/29T, 0.8M) - 2pcs
  • Bearing 6x15x5 - 2pcs
  • Bearing 12x18x4 - 2pcs
  • Grade 12.9 black Flat Head Screws 3x8 - 4pcs

Original Name / Part No:

ARA311095

Compatible Models

  • ARRMA 1/10 Gorgon 4X2 Mega 550 Brushed Monster Truck RTR-ARA3230S
  • ARRMA 1/10 Gorgon 2WD RTA Kit Brushed Monster Truck-ARA3230SK
  • ARRMA 1/10 Gorgon 4X2 Mega 550 Brushed Monster Truck RTR-ARA3230
  • ARRMA 1/10 Vorteks 2WD Stadium Truck RTR-ARA3205
  • ARRMA 1/10 Vorteks 2WD RTR Brushed Stadium Truck-ARA3205S
  • ARRMA 1/10 Fury Mega 550 2WD Short Course Truck RTR-ARA3221
  • ARRMA 1/10 Fury 2WD RTR Brushed Short Course Truck-ARA3221S
  • ARRMA 1/10 Quake 223S DSC 2WD RTR Brushless Monster Truck-ARA3537
  • ARRMA 1/10 Fury 223S DSC 2WD RTR Brushless Short Course Truck-ARA3521
  • ARRMA 1/10 Vorteks 223S DSC 2WD RTR Brushless Stadium Truck-ARA3505
  • ARRMA 1/10 Freedom Flyer 223S 2WD RTR Brushless Monster Truck-ARA3530S
  • ARRMA 1/10 Gorgon 223S 2WD RTR Brushless Monster Truck-ARA3530

Hobbyists running ARRMA Gorgon and related 1/10 platforms can use MGO1200A as a like-for-like 7075 alloy replacement to recover drivetrain durability and consistent gear engagement; always consult the vehicle service manual for correct torque and assembly steps when installing bearings and screws.

Why choose a 7075-T6 case over the stock unit?

7075-T6 offers higher strength than typical cast alloys, and the hard anodize finish helps resist surface wear, extending service life under hobby stresses.

Will this part fit my ARRMA without modification?

Yes, it is designed to be a direct-fit replacement for part number ARA311095 on the listed ARRMA models and uses the same mounting interfaces and 0.8M gear pitch.

Does the kit include bearings and screws?

The kit ships with the listed bearings (6x15x5 and 12x18x4) and Grade 12.9 black flat head screws 3x8, so you can rebuild the differential assembly.

Should gear mesh be rechecked after fitting?

Always set and verify proper backlash and mesh per your chassis manual after fitting to ensure smooth operation and avoid premature wear.

Is there a specific model code to order?

Order using reference MGO1200A to ensure you receive the correct 7075 alloy diff case and idler gear set.

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