2025 YEAR IN REVIEW

Our biggest releases of 2025

NEW & IN STOCK

Available now and ready to ship

BEST RC AIRCRAFT OF 2025

Top aircraft from 2025

2025 YEAR IN REVIEW

Our biggest releases of 2025

NEW & IN STOCK

Available now and ready to ship

BEST RC AIRCRAFT OF 2025

Top aircraft from 2025

O.S. Engines

O.S. Engines

Quality and performance has made O.S. the standard in RC engines for over 80 years.

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649-672 of 1605 Results

    Cylinder & Piston: 25FX

    $40.73

    Clearance Sale!

    Cylinder Liner: GT55

    $44.33$118.99

    Clearance Sale!

    Collector Ring: FR7 Sirius 7

    $346.62

    Exhaust Valve Assembly: FS-70 Ultimate

    $40.12

    Cover Gasket: FS-70 Ultimate

    $11.91

    Case Gasket: GT60

    $7.46

    Pushrod Cover: FS-26 Surpass

    $8.49

    Piston Ring: 55HZ

    $26.24

    Clearance Sale!

    Reduction Gear Bearing: FR5

    $8.90$29.68

    Clearance Sale!

    Piston Ring: FS-91 FT-160

    $26.24

    Screw Fixing 4x40mm WLA-2 (1): GT55

    $6.49

    Throttle Link WLA-2: GT55

    $10.99

    Vavle Exhaust: FS-91 Surpass

    $34.86

    Clearance Sale!

    Stator Assembly: 3820-1200 .25

    $13.79$45.99

    Clearance Sale!

    Carburetor 61D: 65AX

    $97.71

    Carburetor: GT15HZ

    $190.20

    Muffler Extension: #842

    $11.72

    Motor Mount: 65LA, 61-91FX, 75AX

    $40.12

    Piston Ring: 70SZ-H

    $26.24

    Clearance Sale!

    Radial Mount Standoffs: Sirius 7

    $2.80$9.44

    Clearance Sale!

    Powerboost Pipe: GT15HZ

    $281.62

    Cam Cover Screws: FS-70 Ultimate (2)

    $7.46

    Carburetor Body: 70T, GF30

    $97.90

    70T Carburetor: GF30 Gasoline Engine

    $174.34

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