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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1,341-1,364 of 1,605 Results
Cylinder & Piston Assembly: R2101 Speed Cylinder & Piston Assembly: R2101 Speed
4.7 out of 5 Customer Rating
Cylinder & Piston Assembly: R2101 Speed
$177.63
Inner Head: B2102 Speed Inner Head: B2102 Speed
4.7 out of 5 Customer Rating
Inner Head: B2102 Speed
$52.69
Inner Head: O.S. Speed R2104 Inner Head: O.S. Speed R2104
5 out of 5 Customer Rating
Inner Head: O.S. Speed R2104
$76.71
Idle Adj Valve STP #6H7L8H Idle Adj Valve STP #6H7L8H
4.1 out of 5 Customer Rating
Idle Adj Valve STP #6H7L8H
$6.49
Needle Holder 21M: 21XZ-R Needle Holder 21M: 21XZ-R
5 out of 5 Customer Rating
Needle Holder 21M: 21XZ-R
$16.09
Meter Needle Assembly #12FB: 12XZ Speed Meter Needle Assembly #12FB: 12XZ Speed
5 out of 5 Customer Rating
Meter Needle Assembly #12FB: 12XZ Speed
$17.99
Piston Pin: 21XZ-R Piston Pin: 21XZ-R
4.1 out of 5 Customer Rating
Piston Pin: 21XZ-R
$9.85
Carburetor Reducer 8.5mm, Purple: 21M Carburetor Reducer 8.5mm, Purple: 21M
5 out of 5 Customer Rating
Carburetor Reducer 8.5mm, Purple: 21M
$21.10
Cover Plate: 28XZ Cover Plate: 28XZ
5 out of 5 Customer Rating
Cover Plate: 28XZ
$6.67 Price reduced from $22.26 to
Clearance Sale! ⓘ
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
Pump Plate (PD-09) 2/3 Assembly: GF30 II Pump Plate (PD-09) 2/3 Assembly: GF30 II
3.4 out of 5 Customer Rating
Pump Plate (PD-09) 2/3 Assembly: GF30 II
$71.58
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
Intake Manifold 200 Surpass Intake Manifold 200 Surpass
4.2 out of 5 Customer Rating
Intake Manifold 200 Surpass
$34.86
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
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
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! ⓘ
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