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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913-936 of 1,605 Results
7.0mm Carb Reducer (Red): AL2 O.S.SPEED R21GT2 7.0mm Carb Reducer (Red): AL2 O.S.SPEED R21GT2
3.1 out of 5 Customer Rating
7.0mm Carb Reducer (Red): AL2 O.S.SPEED R21GT2
$21.99
Air Bleed Screw: #10G Air Bleed Screw: #10G
4.5 out of 5 Customer Rating
Air Bleed Screw: #10G
$6.49
Carburetor Body: 61C, 95AX Carburetor Body: 61C, 95AX
5 out of 5 Customer Rating
Carburetor Body: 61C, 95AX
$14.55 Price reduced from $48.51 to
Clearance Sale! ⓘ
Carburetor Body: 18TM Carburetor Body: 18TM
3.1 out of 5 Customer Rating
Carburetor Body: 18TM
$46.31
Carburetor Body: 21JN Carburetor Body: 21JN
3.7 out of 5 Customer Rating
Carburetor Body: 21JN
$79.99
Carburetor Body: #10H Carburetor Body: #10H
4.5 out of 5 Customer Rating
Carburetor Body: #10H
$13.99
Cover Plate: FS-120 III Cover Plate: FS-120 III
4.5 out of 5 Customer Rating
Cover Plate: FS-120 III
$6.33 Price reduced from $21.10 to
Clearance Sale! ⓘ
Cover Plate: 91SZ-H Cover Plate: 91SZ-H
5 out of 5 Customer Rating
Cover Plate: 91SZ-H
$20.99
Crankcase: 75AX Crankcase: 75AX
3.3 out of 5 Customer Rating
Crankcase: 75AX
$35.93 Price reduced from $119.78 to
Clearance Sale! ⓘ
Cover Plate: FS-200S-P Cover Plate: FS-200S-P
4.1 out of 5 Customer Rating
Cover Plate: FS-200S-P
$25.44
Crankcase: FS81 Alpha Crankcase: FS81 Alpha
4.1 out of 5 Customer Rating
Crankcase: FS81 Alpha
$87.19
Crankcase: 25LA Natural Crankcase: 25LA Natural
5 out of 5 Customer Rating
Crankcase: 25LA Natural
$34.86
Cylinder & Piston: B21 Speed Adam Drake Cylinder & Piston: B21 Speed Adam Drake
4.1 out of 5 Customer Rating
Cylinder & Piston: B21 Speed Adam Drake
$188.33
Carburetor Body: #60R Carburetor Body: #60R
4 out of 5 Customer Rating
Carburetor Body: #60R
$41.99
70T Carburetor: GF30 Gasoline Engine 70T Carburetor: GF30 Gasoline Engine
3.6 out of 5 Customer Rating
70T Carburetor: GF30 Gasoline Engine
$174.34
Cylinder & Piston Assembly: 55AX Cylinder & Piston Assembly: 55AX
5 out of 5 Customer Rating
Cylinder & Piston Assembly: 55AX
$104.95
Outer Head: 28XZ Outer Head: 28XZ
3.7 out of 5 Customer Rating
Outer Head: 28XZ
$102.52
Cir Clip In-Flight Needle Valve Cir Clip In-Flight Needle Valve
5 out of 5 Customer Rating
Cir Clip In-Flight Needle Valve
$6.49
Inner Head: O.S.SPEED R21GT2 Inner Head: O.S.SPEED R21GT2
4.9 out of 5 Customer Rating
Inner Head: O.S.SPEED R21GT2
$57.99
Front Crankshaft Bearing: Speed T1202 Front Crankshaft Bearing: Speed T1202
5 out of 5 Customer Rating
Front Crankshaft Bearing: Speed T1202
$22.04
Rear Bearing: GT55 Rear Bearing: GT55
3.7 out of 5 Customer Rating
Rear Bearing: GT55
$6.29 Price reduced from $20.99 to
Clearance Sale! ⓘ
Crankshaft Bearing, Front: FS-91 Crankshaft Bearing, Front: FS-91
5 out of 5 Customer Rating
Crankshaft Bearing, Front: FS-91
$26.34
Rear Bearing: FS-62V Rear Bearing: FS-62V
4.5 out of 5 Customer Rating
Rear Bearing: FS-62V
$25.19
Carburetor Body: 22C(B), Speed B2102 Carburetor Body: 22C(B), Speed B2102
4.7 out of 5 Customer Rating
Carburetor Body: 22C(B), Speed B2102
$26.16 Price reduced from $87.19 to
Clearance Sale! ⓘ
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