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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457-480 of 1,755 Results
Cylinder Liner: 37SZ-H Cylinder Liner: 37SZ-H
3.3 out of 5 Customer Rating
Cylinder Liner: 37SZ-H
$38.67
Under Cover: IL-300 Dia-Star Under Cover: IL-300 Dia-Star
3.7 out of 5 Customer Rating
Under Cover: IL-300 Dia-Star
$16.81
Lever Metering WLA-2: GT55 Lever Metering WLA-2: GT55
5 out of 5 Customer Rating
Lever Metering WLA-2: GT55
$11.87
O-Ring 10.5mm: GT55 O-Ring 10.5mm: GT55
5 out of 5 Customer Rating
O-Ring 10.5mm: GT55
$6.49
Piston: 50SX-H Piston: 50SX-H
4.1 out of 5 Customer Rating
Piston: 50SX-H
$37.80
Rocker Arm Assembly: 200 Surpass Rocker Arm Assembly: 200 Surpass
4.1 out of 5 Customer Rating
Rocker Arm Assembly: 200 Surpass
$11.05 Price reduced from $36.85 to
Clearance Sale! ⓘ
Stator Assembly: 5025-375 .50 Stator Assembly: 5025-375 .50
4.7 out of 5 Customer Rating
Stator Assembly: 5025-375 .50
$92.99
Intake Manifold: 56 FS Intake Manifold: 56 FS
4.1 out of 5 Customer Rating
Intake Manifold: 56 FS
$19.14
Rear Bearing: 61-300 Rear Bearing: 61-300
4.5 out of 5 Customer Rating
Rear Bearing: 61-300
$22.16
Carburetor Screw: FS61-FT300 Carburetor Screw: FS61-FT300
4.1 out of 5 Customer Rating
Carburetor Screw: FS61-FT300
$6.49
Connecting Rod: GT15HZ Connecting Rod: GT15HZ
3.1 out of 5 Customer Rating
Connecting Rod: GT15HZ
$17.33 Price reduced from $57.77 to
Clearance Sale! ⓘ
Connecting Rod: 28XZ Connecting Rod: 28XZ
5 out of 5 Customer Rating
Connecting Rod: 28XZ
$48.51
Heat Sink Head: 21TM Heat Sink Head: 21TM
4.1 out of 5 Customer Rating
Heat Sink Head: 21TM
$80.41
Mixture Control Valve #20K Mixture Control Valve #20K
3.9 out of 5 Customer Rating
Mixture Control Valve #20K
$19.05
Needle Valve Assembly 12F2-B: Speed T1202 Needle Valve Assembly 12F2-B: Speed T1202
3.9 out of 5 Customer Rating
Needle Valve Assembly 12F2-B: Speed T1202
$27.29
Rotor Stop Screw #2FB #2F Rotor Stop Screw #2FB #2F
3.9 out of 5 Customer Rating
Rotor Stop Screw #2FB #2F
$6.45
Crankcase O.S. Speed T1204 Crankcase O.S. Speed T1204
3.5 out of 5 Customer Rating
Crankcase O.S. Speed T1204
$86.74
M2001SC Manifold: 21XZ-R, 21VG M2001SC Manifold: 21XZ-R, 21VG
5 out of 5 Customer Rating
M2001SC Manifold: 21XZ-R, 21VG
$67.39
O.S. Cylinder Piston Rod Set Speed: T1203 O.S. Cylinder Piston Rod Set Speed: T1203
3.3 out of 5 Customer Rating
O.S. Cylinder Piston Rod Set Speed: T1203
$176.79
Outer Head: R2102 Speed Outer Head: R2102 Speed
5 out of 5 Customer Rating
Outer Head: R2102 Speed
$91.34
O.S. Dust Cover 21E 21F 22D 22J O.S. Dust Cover 21E 21F 22D 22J
4.7 out of 5 Customer Rating
O.S. Dust Cover 21E 21F 22D 22J
$11.91
Piston Pin: 30VG Piston Pin: 30VG
4.7 out of 5 Customer Rating
Piston Pin: 30VG
$11.91
Carburetor 40L: 55HZ Hyper Carburetor 40L: 55HZ Hyper
4 out of 5 Customer Rating
Carburetor 40L: 55HZ Hyper
$152.36
Cam Cover: FS-120 III Cam Cover: FS-120 III
3.4 out of 5 Customer Rating
Cam Cover: FS-120 III
$10.86
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