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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337-384 of 1,758 Results
Carburetor Rotor: 80T Sirius 7 Carburetor Rotor: 80T Sirius 7
5 out of 5 Customer Rating
Carburetor Rotor: 80T Sirius 7
$13.25 Price reduced from $44.18 to
Clearance Sale! ⓘ
Cover Plate: FS91-P Cover Plate: FS91-P
5 out of 5 Customer Rating
Cover Plate: FS91-P
$21.10
Crankshaft: 50SX Crankshaft: 50SX
5 out of 5 Customer Rating
Crankshaft: 50SX
$47.99
Cylinder Liner: FT-300 Cylinder Liner: FT-300
5 out of 5 Customer Rating
Cylinder Liner: FT-300
$59.99
Drive Washer: 25LA-S Drive Washer: 25LA-S
4.8 out of 5 Customer Rating
Drive Washer: 25LA-S
$6.49
Head Gasket: FT-160 Head Gasket: FT-160
4.4 out of 5 Customer Rating
Head Gasket: FT-160
$6.45
Intake Pipe AS-R: FT-240 Intake Pipe AS-R: FT-240
4.8 out of 5 Customer Rating
Intake Pipe AS-R: FT-240
$22.16
Head Gasket: FR5 Head Gasket: FR5
3.6 out of 5 Customer Rating
Head Gasket: FR5
$11.72
Hex Head Screw 5x55mm (10) Hex Head Screw 5x55mm (10)
3.2 out of 5 Customer Rating
Hex Head Screw 5x55mm (10)
$13.78
Valve Exhaust: FS-120 Surpass Valve Exhaust: FS-120 Surpass
5 out of 5 Customer Rating
Valve Exhaust: FS-120 Surpass
$37.80
Front Bearing: 21-61 Front Bearing: 21-61
4.8 out of 5 Customer Rating
Front Bearing: 21-61
$21.17
Cam Cover: FS-20 Supass Cam Cover: FS-20 Supass
4 out of 5 Customer Rating
Cam Cover: FS-20 Supass
$7.99
Collector Exhaust Pipe: IL-300 Dia Star Collector Exhaust Pipe: IL-300 Dia Star
5 out of 5 Customer Rating
Collector Exhaust Pipe: IL-300 Dia Star
$411.70
Pushrod Cover Assembly: 200 Surpass Pushrod Cover Assembly: 200 Surpass
5 out of 5 Customer Rating
Pushrod Cover Assembly: 200 Surpass
$11.84
Pushrod Cover Assembly: FT-120-240 Pushrod Cover Assembly: FT-120-240
3.6 out of 5 Customer Rating
Pushrod Cover Assembly: FT-120-240
$21.10
Piston Pin: GT55 Piston Pin: GT55
4.4 out of 5 Customer Rating
Piston Pin: GT55
$6.30 Price reduced from $19.14 to
Clearance Sale! ⓘ
Rear Housing: FT-160 Rear Housing: FT-160
5 out of 5 Customer Rating
Rear Housing: FT-160
$97.81
Rotor Guide Screw: F90-300 Rotor Guide Screw: F90-300
3.6 out of 5 Customer Rating
Rotor Guide Screw: F90-300
$6.49
Hex Head Screw 4x15mm (10) Hex Head Screw 4x15mm (10)
5 out of 5 Customer Rating
Hex Head Screw 4x15mm (10)
$11.80
Valve Assembly Intake: FS-120 Surpass Valve Assembly Intake: FS-120 Surpass
4.8 out of 5 Customer Rating
Valve Assembly Intake: FS-120 Surpass
$44.10
Bearing Set: OMA-2820-950 Bearing Set: OMA-2820-950
3.6 out of 5 Customer Rating
Bearing Set: OMA-2820-950
$30.99
Needle Valve Holder 61ER Needle Valve Holder 61ER
4 out of 5 Customer Rating
Needle Valve Holder 61ER
$11.80
Screw Set (8): 30VG Screw Set (8): 30VG
5 out of 5 Customer Rating
Screw Set (8): 30VG
$9.85
Throttle Lever Nut #10ER Throttle Lever Nut #10ER
5 out of 5 Customer Rating
Throttle Lever Nut #10ER
$6.45
T-1070SC L52 Pipe Set T-1070SC L52 Pipe Set
4.4 out of 5 Customer Rating
T-1070SC L52 Pipe Set
$190.29
Cover Plate Assembly: GGT10 Cover Plate Assembly: GGT10
5 out of 5 Customer Rating
Cover Plate Assembly: GGT10
$16.39 Price reduced from $54.63 to
Clearance Sale! ⓘ
Crankshaft: FS72 Alpha Crankshaft: FS72 Alpha
3.7 out of 5 Customer Rating
Crankshaft: FS72 Alpha
$74.90
Rocker Cover Gasket: GF40 Rocker Cover Gasket: GF40
3.7 out of 5 Customer Rating
Rocker Cover Gasket: GF40
$10.94
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
Head Gasket: 56 FS Head Gasket: 56 FS
5 out of 5 Customer Rating
Head Gasket: 56 FS
$6.49
Exhaust Header Pipe Assembly F-5050: FS-95V Exhaust Header Pipe Assembly F-5050: FS-95V
3.9 out of 5 Customer Rating
Exhaust Header Pipe Assembly F-5050: FS-95V
$19.14
Cover Plate: 200 Surpass Cover Plate: 200 Surpass
5 out of 5 Customer Rating
Cover Plate: 200 Surpass
$22.30
Lever Metering WLA-2: GT55 Lever Metering WLA-2: GT55
5 out of 5 Customer Rating
Lever Metering WLA-2: GT55
$11.87
Nozzle: 15FP-S RN Nozzle: 15FP-S RN
5 out of 5 Customer Rating
Nozzle: 15FP-S RN
$9.85
Pushrod Cover Assembly: 120Surpass Pushrod Cover Assembly: 120Surpass
4.7 out of 5 Customer Rating
Pushrod Cover Assembly: 120Surpass
$22.04
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! ⓘ
Intake Manifold: 56 FS Intake Manifold: 56 FS
4.1 out of 5 Customer Rating
Intake Manifold: 56 FS
$19.14
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
$14.55 Price reduced from $48.51 to
Clearance Sale! ⓘ
Crankcase: T1201 Speed Crankcase: T1201 Speed
5 out of 5 Customer Rating
Crankcase: T1201 Speed
$87.17
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
Fuel Nipple: #20A, B Fuel Nipple: #20A, B
3.1 out of 5 Customer Rating
Fuel Nipple: #20A, B
$10.86
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
$8.19 Price reduced from $27.29 to
Clearance Sale! ⓘ
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! ⓘ
Cover Plate: 21VG-P Cover Plate: 21VG-P
3.7 out of 5 Customer Rating
Cover Plate: 21VG-P
$13.78
Outer Head: R2102 Speed Outer Head: R2102 Speed
5 out of 5 Customer Rating
Outer Head: R2102 Speed
$91.34
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