O.S. Engines

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Quality and performance has made O.S. the standard in RC engines for over 80 years.
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985-1,008 of 1,808 Results
Outer Head: 19XZ-B Speed Outer Head: 19XZ-B Speed
5 out of 5 Customer Rating
Outer Head: 19XZ-B Speed
$102.20
Air Filter: INS Air Filter: INS
3.4 out of 5 Customer Rating
Air Filter: INS
$40.99
Carb Reducer 5.5mm: #11H, #11HB, 12TZ Carb Reducer 5.5mm: #11H, #11HB, 12TZ
5 out of 5 Customer Rating
Carb Reducer 5.5mm: #11H, #11HB, 12TZ
$11.80
Carburetor Body: 21J3 Carburetor Body: 21J3
4 out of 5 Customer Rating
Carburetor Body: 21J3
$97.70
Carburetor Rotor: #11J Carburetor Rotor: #11J
5 out of 5 Customer Rating
Carburetor Rotor: #11J
$29.60
Connecting Rod: 21XR-B Version II Connecting Rod: 21XR-B Version II
4.8 out of 5 Customer Rating
Connecting Rod: 21XR-B Version II
$29.56
Crankcase: 21XZ-B Ver2 Crankcase: 21XZ-B Ver2
4.2 out of 5 Customer Rating
Crankcase: 21XZ-B Ver2
$124.95
O.S. Crankshaft Speed B2103 Type S & Type R O.S. Crankshaft Speed B2103 Type S & Type R
4.8 out of 5 Customer Rating
O.S. Crankshaft Speed B2103 Type S & Type R
$193.70
Cylinder Piston Assembly: 21XZ-B Spec 2 Cylinder Piston Assembly: 21XZ-B Spec 2
4 out of 5 Customer Rating
Cylinder Piston Assembly: 21XZ-B Spec 2
$204.38
Inner Head: 21XZ-B Spec 2 Inner Head: 21XZ-B Spec 2
4.8 out of 5 Customer Rating
Inner Head: 21XZ-B Spec 2
$57.96
Gasket Head Aluminum, .2mm: 19XZ-B Speed Gasket Head Aluminum, .2mm: 19XZ-B Speed
5 out of 5 Customer Rating
Gasket Head Aluminum, .2mm: 19XZ-B Speed
$5.31
Thermo Insulator, 11K: 18TM Thermo Insulator, 11K: 18TM
4 out of 5 Customer Rating
Thermo Insulator, 11K: 18TM
$19.14
Gasket Head, .1 Brass: 21XZ-R Gasket Head, .1 Brass: 21XZ-R
3.6 out of 5 Customer Rating
Gasket Head, .1 Brass: 21XZ-R
$6.49
Slide Valve 21M Slide Valve 21M
5 out of 5 Customer Rating
Slide Valve 21M
$32.56
Rear Adapter: 18TM Rear Adapter: 18TM
3.2 out of 5 Customer Rating
Rear Adapter: 18TM
$19.05
Speed Flywheel Puller Speed Flywheel Puller
4 out of 5 Customer Rating
Speed Flywheel Puller
$48.34
Speed Hex Driver Replacement Tip 2.5 Speed Hex Driver Replacement Tip 2.5
3.6 out of 5 Customer Rating
Speed Hex Driver Replacement Tip 2.5
$18.39
Heat Sink Head: 91SX-H Heat Sink Head: 91SX-H
5 out of 5 Customer Rating
Heat Sink Head: 91SX-H
$57.99
Motor Mount: 15LA Motor Mount: 15LA
4.1 out of 5 Customer Rating
Motor Mount: 15LA
$22.26
Bearing Rear: 65AX Bearing Rear: 65AX
5 out of 5 Customer Rating
Bearing Rear: 65AX
$22.16
Rear Bearing: 108-160 Rear Bearing: 108-160
4.9 out of 5 Customer Rating
Rear Bearing: 108-160
$26.34
Cam Holder: Sirius 7 Cam Holder: Sirius 7
5 out of 5 Customer Rating
Cam Holder: Sirius 7
$48.41
Cam Cover: FS-40 Surpass Cam Cover: FS-40 Surpass
5 out of 5 Customer Rating
Cam Cover: FS-40 Surpass
$9.44
Carburetor Screw: #103A2A Carburetor Screw: #103A2A
3.3 out of 5 Customer Rating
Carburetor Screw: #103A2A
$6.49
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