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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1,297-1,320 of 1,755 Results
Connecting Rod: FT-120, 160 Connecting Rod: FT-120, 160
5 out of 5 Customer Rating
Connecting Rod: FT-120, 160
$67.22
Carburetor 22C-B: Speed B2102 Carburetor 22C-B: Speed B2102
3.1 out of 5 Customer Rating
Carburetor 22C-B: Speed B2102
$152.36
Crankcase: T1201 Speed Crankcase: T1201 Speed
5 out of 5 Customer Rating
Crankcase: T1201 Speed
$87.17
Crankshaft: 18TZ-TX Crankshaft: 18TZ-TX
3.3 out of 5 Customer Rating
Crankshaft: 18TZ-TX
$60.65
Crankshaft: 91HZ-R Speed 3D 3C Crankshaft: 91HZ-R Speed 3D 3C
4.7 out of 5 Customer Rating
Crankshaft: 91HZ-R Speed 3D 3C
$102.54
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
Outer Head: Speed 21XZ-GT Outer Head: Speed 21XZ-GT
3.9 out of 5 Customer Rating
Outer Head: Speed 21XZ-GT
$102.52
Fuel Nipple: #20A, B Fuel Nipple: #20A, B
3.1 out of 5 Customer Rating
Fuel Nipple: #20A, B
$10.86
Gasket Set: 25XZ Gasket Set: 25XZ
5 out of 5 Customer Rating
Gasket Set: 25XZ
$7.99
Slide Valve 22C(B): Speed B2102 Slide Valve 22C(B): Speed B2102
4.7 out of 5 Customer Rating
Slide Valve 22C(B): Speed B2102
$10.08 Price reduced from $33.61 to
Clearance Sale! ⓘ
Outer Head O.S. Speed B21 Adam Drake Edition 3 Outer Head O.S. Speed B21 Adam Drake Edition 3
3.1 out of 5 Customer Rating
Outer Head O.S. Speed B21 Adam Drake Edition 3
$97.99
Cover Plate: 21VG-P Cover Plate: 21VG-P
3.7 out of 5 Customer Rating
Cover Plate: 21VG-P
$13.78
Crankshaft: B2101 Speed Crankshaft: B2101 Speed
4.5 out of 5 Customer Rating
Crankshaft: B2101 Speed
$205.99
Outerhead: 21XR-B Version II Outerhead: 21XR-B Version II
3.3 out of 5 Customer Rating
Outerhead: 21XR-B Version II
$80.29
Carburetor 61R: FS81 Alpha Pump Carburetor 61R: FS81 Alpha Pump
4 out of 5 Customer Rating
Carburetor 61R: FS81 Alpha Pump
$141.93
Breather Nipple: FS-20, 40 Breather Nipple: FS-20, 40
3.4 out of 5 Customer Rating
Breather Nipple: FS-20, 40
$6.49
Carburetor Body: #40G Carburetor Body: #40G
4.8 out of 5 Customer Rating
Carburetor Body: #40G
$8.84 Price reduced from $29.49 to
Clearance Sale! ⓘ
Connecting Rod: 20-28 Connecting Rod: 20-28
4.8 out of 5 Customer Rating
Connecting Rod: 20-28
$19.05
Crankcase: 55HZ Hyper Crankcase: 55HZ Hyper
4.8 out of 5 Customer Rating
Crankcase: 55HZ Hyper
$70.56
Cylinder Head: 56 FS Cylinder Head: 56 FS
5 out of 5 Customer Rating
Cylinder Head: 56 FS
$63.20
Cylinder Jacket: FT-160 Cylinder Jacket: FT-160
4 out of 5 Customer Rating
Cylinder Jacket: FT-160
$70.37
Cylinder Liner: 56 FS Cylinder Liner: 56 FS
3.6 out of 5 Customer Rating
Cylinder Liner: 56 FS
$30.10
Exhaust Pipe Assembly: T-120 160 Exhaust Pipe Assembly: T-120 160
3.6 out of 5 Customer Rating
Exhaust Pipe Assembly: T-120 160
$22.04
Water Nipple: #2 Water Nipple: #2
5 out of 5 Customer Rating
Water Nipple: #2
$6.49
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