Spare Gearbox for AC 25-25 "300" Motors (Gear Ratio "5:1" Type)

Old Price: $18.25

Special Price: $6.66

Part Number: MPJ-8202

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MP JET s.r.o. is a Czech company producing model engines, gearboxes and broad sortiment of screws, control linkages and accessories for flying models.

This is the GearBox BB 5:1 with pinion 2mm dia recommended for use with MP Jet Electromotor AC 25-25 (MPJ 20120-20127). The design features a single stage gearbox with two ball bearings supporting a 3mm dia hardened main shaft.


  • Single stage gearbox with inner-driven gear construction
  • Hardened main shaft 3 mm dia
  • Close type gearbox
  • Metal pinion wheel
  • Two possibilities of mounting (front adapter or lugs)
  • Tooth size (modul) 0,5
  • Ball bearing supported shaft

Included in the package:

  • Gearbox for AC 25-25 (Gear Ratio 5:1) x 1
    • Gearbox x 1
    • Pinion wheel x1
    • PAN HEAD tapping screws 2,2x9,5 x 3
    • Thread locking adhesive x 1
    • Instruction manual x 1


    • Material: Plastic/Metal
    • Gear Ratio: 5:1
    • Module: 0.5
    • Output Shaft dia: 3mm
    • Pinion Dia: 9mm
    • Pinion I.D: 2mm