O.S. Engines

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

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Back Plate: Sirius 7

$192.56 ~~Price reduced from $466.21 to~~

Clearance Sale! ⓘ

Crankcase: GT15

$37.51 ~~Price reduced from $125.03 to~~

Clearance Sale! ⓘ

Crankpin Stop Screw: GT60

$11.80

Cylinder & Piston: 25FX

$40.73

Piston: 37SZ-H

$32.56

Cylinder Head: FS-91-P

$81.94

Cylinder Liner: GT55

$44.33 ~~Price reduced from $118.99 to~~

Clearance Sale! ⓘ

Exhaust Valve Assembly: FS-70 Ultimate

$40.12

Cover Gasket: FS-70 Ultimate

$11.91

Case Gasket: GT60

$7.46

Silencer Body: 200 Surpass

$87.21

Pan Head Screw 3x18mm (10)

$3.57 ~~Price reduced from $11.91 to~~

Clearance Sale! ⓘ

Pushrod Cover: FS-26 Surpass

$8.49

Piston Ring: 55HZ

$26.24

Piston Ring: FS-91 FT-160

$26.24

Reduction Gear Bearing: FR5

$8.90 ~~Price reduced from $29.68 to~~

Clearance Sale! ⓘ

Stator Assembly: 3820-1200 .25

$13.79 ~~Price reduced from $45.99 to~~

Clearance Sale! ⓘ

Carburetor 61D: 65AX

$97.71

Carburetor: GT15HZ

$190.20

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

$40.12

Radial Mount Standoffs: Sirius 7

$2.80 ~~Price reduced from $9.44 to~~

Clearance Sale! ⓘ

Powerboost Pipe: GT15HZ

$281.62

Cam Cover Screws: FS-70 Ultimate (2)

$7.46

Carburetor Body: 70T, GF30

$97.90