O.S. Engines

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

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Cylinder Head: 91SX-H Complete

$30.00 ~~Price reduced from $99.99 to~~

Clearance Sale! ⓘ

Cylinder Rebuild Kit: R21

$188.45

Gasket Set: 50SX-H

$8.43

Intake Pipe Right: FT-120 160

$6.71 ~~Price reduced from $22.37 to~~

Clearance Sale! ⓘ

Piston Ring: FT-120 240

$29.60

Piston: FS110A

$48.51

Crankshaft: 56 FS

$18.20 ~~Price reduced from $60.65 to~~

Clearance Sale! ⓘ

Rear Bearing: 40-50

$26.34

Piston: 91HZ

$91.99

Carburetor Gasket: 70T, GF30

$7.46

Rocker Arm: FS-40-48S

$25.44

Piston Ring: 108FSR

$29.60

Piston Ring: 91FX

$26.24

Head Gasket: 200 Surpass

$6.49

Air Bleed Screw: #10G

$6.49

Cylinder Liner: FS-62V

$35.47

Collector Exhaust Pipe: IL-300 Dia Star

$411.70

O-Ring 1.2x54mm: GT55

$7.46

Carburetor Retainer: 55HZ Hyper

$11.70

Drive Hub: 200 Surpass

$29.60

Pushrod Cover Assembly: FT-120-240

$21.10

Piston Pin Retainer: 40PS

$6.49

Needle Control Lever In Flight Needle Valve

$6.49

Motor Mount: 15CV-A, 10LA

$25.44