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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169-192 of 1,808 Results
Long Spinner Nut 1/4"-28 Long Spinner Nut 1/4"-28
4.1 out of 5 Customer Rating
Long Spinner Nut 1/4"-28
$11.80
Dust Cap Set, 7mm (3) Dust Cap Set, 7mm (3)
5 out of 5 Customer Rating
Dust Cap Set, 7mm (3)
$9.85
Dust Cap Set, 10mm (3) Dust Cap Set, 10mm (3)
4.4 out of 5 Customer Rating
Dust Cap Set, 10mm (3)
$9.85
Head Gasket: 21TM Head Gasket: 21TM
4 out of 5 Customer Rating
Head Gasket: 21TM
$9.74
Cylinder Piston Rod Set: O.S. Speed B2104 Cylinder Piston Rod Set: O.S. Speed B2104
3.4 out of 5 Customer Rating
Cylinder Piston Rod Set: O.S. Speed B2104
$242.95
Cover Plate: O.S. Speed B2104 Cover Plate: O.S. Speed B2104
4.2 out of 5 Customer Rating
Cover Plate: O.S. Speed B2104
$28.35
Carburetor Retainer: 21EX-B, R Carburetor Retainer: 21EX-B, R
4 out of 5 Customer Rating
Carburetor Retainer: 21EX-B, R
$11.87
Crankcase: 21XZ-B Crankcase: 21XZ-B
4.8 out of 5 Customer Rating
Crankcase: 21XZ-B
$124.99
Cylinder Rebuild Kit: R2101 Speed Cylinder Rebuild Kit: R2101 Speed
5 out of 5 Customer Rating
Cylinder Rebuild Kit: R2101 Speed
$232.21
Cylinder & Piston Speed: T1202 Cylinder & Piston Speed: T1202
4 out of 5 Customer Rating
Cylinder & Piston Speed: T1202
$127.43
Outer Head: T1201 Speed Outer Head: T1201 Speed
5 out of 5 Customer Rating
Outer Head: T1201 Speed
$102.46
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
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