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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717-740 of 1,605 Results
Crankcase: 19XZ-B Speed Crankcase: 19XZ-B Speed
3.3 out of 5 Customer Rating
Crankcase: 19XZ-B Speed
$47.31 Price reduced from $157.70 to
Clearance Sale! ⓘ
Crankshaft: 12TG-P Crankshaft: 12TG-P
4.5 out of 5 Customer Rating
Crankshaft: 12TG-P
$50.83
Crankshaft: 21 Speed V-Spec Crankshaft: 21 Speed V-Spec
5 out of 5 Customer Rating
Crankshaft: 21 Speed V-Spec
$174.99
Inner Head: T1201 Speed Inner Head: T1201 Speed
4.7 out of 5 Customer Rating
Inner Head: T1201 Speed
$37.99
O.S. Outer Head Speed: T1203 O.S. Outer Head Speed: T1203
3.9 out of 5 Customer Rating
O.S. Outer Head Speed: T1203
$89.99
Heat Sink Head: 30VG Heat Sink Head: 30VG
3.1 out of 5 Customer Rating
Heat Sink Head: 30VG
$91.34
Gasket Set: 12TG Gasket Set: 12TG
4.5 out of 5 Customer Rating
Gasket Set: 12TG
$10.94
Pan Head Screw +3.0X12 (10) Pan Head Screw +3.0X12 (10)
4.8 out of 5 Customer Rating
Pan Head Screw +3.0X12 (10)
$9.53
90 Degree In-Cowl Header: FS110A 90 Degree In-Cowl Header: FS110A
4.8 out of 5 Customer Rating
90 Degree In-Cowl Header: FS110A
$36.85
Intake Manifold 200 Surpass Intake Manifold 200 Surpass
4.2 out of 5 Customer Rating
Intake Manifold 200 Surpass
$34.86
Motor Mount: 15CV-A, 10LA Motor Mount: 15CV-A, 10LA
4 out of 5 Customer Rating
Motor Mount: 15CV-A, 10LA
$25.44
Front Bearing: 90-300 Front Bearing: 90-300
4 out of 5 Customer Rating
Front Bearing: 90-300
$22.16
Camshaft: FS72 Alpha Camshaft: FS72 Alpha
4.2 out of 5 Customer Rating
Camshaft: FS72 Alpha
$54.63
Connecting Rod: FS-120 SP Connecting Rod: FS-120 SP
5 out of 5 Customer Rating
Connecting Rod: FS-120 SP
$40.12
Connecting Rod Bearing: GGT10 Connecting Rod Bearing: GGT10
5 out of 5 Customer Rating
Connecting Rod Bearing: GGT10
$7.63 Price reduced from $25.44 to
Clearance Sale! ⓘ
Back Plate: Sirius 7 Back Plate: Sirius 7
4.2 out of 5 Customer Rating
Back Plate: Sirius 7
$192.56 Price reduced from $466.21 to
Clearance Sale! ⓘ
Crankpin Stop Screw: GT60 Crankpin Stop Screw: GT60
4.8 out of 5 Customer Rating
Crankpin Stop Screw: GT60
$11.80
Cylinder & Piston: 25FX Cylinder & Piston: 25FX
5 out of 5 Customer Rating
Cylinder & Piston: 25FX
$40.73
Piston: 37SZ-H Piston: 37SZ-H
3.6 out of 5 Customer Rating
Piston: 37SZ-H
$32.56
Cylinder Head: FS-91-P Cylinder Head: FS-91-P
4.8 out of 5 Customer Rating
Cylinder Head: FS-91-P
$81.94
Cylinder Liner: GT55 Cylinder Liner: GT55
4.2 out of 5 Customer Rating
Cylinder Liner: GT55
$44.33 Price reduced from $118.99 to
Clearance Sale! ⓘ
Collector Ring: FR7 Sirius 7 Collector Ring: FR7 Sirius 7
5 out of 5 Customer Rating
Collector Ring: FR7 Sirius 7
$346.62
Exhaust Valve Assembly: FS-70 Ultimate Exhaust Valve Assembly: FS-70 Ultimate
5 out of 5 Customer Rating
Exhaust Valve Assembly: FS-70 Ultimate
$40.12
Cover Gasket: FS-70 Ultimate Cover Gasket: FS-70 Ultimate
3.4 out of 5 Customer Rating
Cover Gasket: FS-70 Ultimate
$11.91
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