Arrma Gear Differential Maintenance Set

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This is a replacement Arrma Gear Differential Maintenance Set. This high-quality diff maintenance set provides replacement parts for your kit supplied items.


  • Easily service an ARRMA diff with this set of internal parts
  • Super-tough steel gears provide long-lasting durability and super-smooth operation
  • Precision manufactured tooth configurations for consistent gear mesh
  • High-quality rubber O-rings for increased seal security
  • Strong and durable cross shafts for consistent planetary gear operation
  • Includes locking sun gear for use with Electronic Diff Control - (EDC)
  • Super-tough steel shims for increased durability

Planetry gear:
Sun gear: 20T
Locking sun gear: 20T


  • (4) Planetry gear - 10T
  • (1) Sun gear - 20T
  • (1) Locking sun gear 20T
  • (2) Cross shafts
  • (2) O-ring 7x1.5mm
  • (4) Shim 4x12x0.3mm
  • (1) Shim 7x12x0.3mm
  • (1) Shim 7x18x0.3mm
  • (1) O-ring 18x1.2mm

This product was added to our catalog on April 5, 2017