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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1,537-1,584 of 1,758 Results
Powerboost Pipe: III 50, 55HZ-H Powerboost Pipe: III 50, 55HZ-H
3.3 out of 5 Customer Rating
Powerboost Pipe: III 50, 55HZ-H
$184.86
Rear Bearing: 108-160 Rear Bearing: 108-160
4.9 out of 5 Customer Rating
Rear Bearing: 108-160
$26.34
Cam Cover: FS-40 Surpass Cam Cover: FS-40 Surpass
5 out of 5 Customer Rating
Cam Cover: FS-40 Surpass
$9.44
Carburetor Screw: #103A2A Carburetor Screw: #103A2A
3.3 out of 5 Customer Rating
Carburetor Screw: #103A2A
$6.49
Back Plate Parallel Pin: Sirius 7 Back Plate Parallel Pin: Sirius 7
4.5 out of 5 Customer Rating
Back Plate Parallel Pin: Sirius 7
$6.49
Crankcase: GGT10 Crankcase: GGT10
4.1 out of 5 Customer Rating
Crankcase: GGT10
$104.09
Cylinder Head: FS155A-P Cylinder Head: FS155A-P
3.1 out of 5 Customer Rating
Cylinder Head: FS155A-P
$114.61
Cylinder Head: GT15 Cylinder Head: GT15
5 out of 5 Customer Rating
Cylinder Head: GT15
$15.81 Price reduced from $52.69 to
Clearance Sale! ⓘ
Cylinder Jacket: IL-300 Dia-Star Cylinder Jacket: IL-300 Dia-Star
4.1 out of 5 Customer Rating
Cylinder Jacket: IL-300 Dia-Star
$162.95
Cylinder Liner: 55HZ Hyper Cylinder Liner: 55HZ Hyper
5 out of 5 Customer Rating
Cylinder Liner: 55HZ Hyper
$64.39
Drive Spacer: GT33 Drive Spacer: GT33
4.1 out of 5 Customer Rating
Drive Spacer: GT33
$13.26 Price reduced from $44.22 to
Clearance Sale! ⓘ
Cylinder Liner: FS72 Alpha Cylinder Liner: FS72 Alpha
3.3 out of 5 Customer Rating
Cylinder Liner: FS72 Alpha
$43.02
Gasket Set: 50SX-H Gasket Set: 50SX-H
3.7 out of 5 Customer Rating
Gasket Set: 50SX-H
$8.43
Carburetor Spacer: Sirius 7 Carburetor Spacer: Sirius 7
5 out of 5 Customer Rating
Carburetor Spacer: Sirius 7
$3.26 Price reduced from $10.86 to
Clearance Sale! ⓘ
Intake Cam: Sirius 7 Intake Cam: Sirius 7
5 out of 5 Customer Rating
Intake Cam: Sirius 7
$21.11 Price reduced from $70.37 to
Clearance Sale! ⓘ
Link Pin: Sirius 7 Link Pin: Sirius 7
3.3 out of 5 Customer Rating
Link Pin: Sirius 7
$3.54 Price reduced from $11.80 to
Clearance Sale! ⓘ
Locknut: GT33 Locknut: GT33
5 out of 5 Customer Rating
Locknut: GT33
$17.16
Muffler Screws #871 (2) Muffler Screws #871 (2)
4.7 out of 5 Customer Rating
Muffler Screws #871 (2)
$6.49
Needle 25 2SX: 61FX Needle 25 2SX: 61FX
3.7 out of 5 Customer Rating
Needle 25 2SX: 61FX
$13.78
Main Needle Valve Assembly: 61ER Main Needle Valve Assembly: 61ER
5 out of 5 Customer Rating
Main Needle Valve Assembly: 61ER
$22.30
Piston Pin Retainer: BGX 3500 Piston Pin Retainer: BGX 3500
3.3 out of 5 Customer Rating
Piston Pin Retainer: BGX 3500
$7.46
Screw Fixing 40x5mm WLA-2: GT55 Screw Fixing 40x5mm WLA-2: GT55
5 out of 5 Customer Rating
Screw Fixing 40x5mm WLA-2: GT55
$6.49
Silencer Body: F-4051 O.S. FS-64V Silencer Body: F-4051 O.S. FS-64V
5 out of 5 Customer Rating
Silencer Body: F-4051 O.S. FS-64V
$28.99
Throttle Lever #40D Throttle Lever #40D
4.1 out of 5 Customer Rating
Throttle Lever #40D
$7.46
Bearing L-840ZZ Bearing L-840ZZ
4.1 out of 5 Customer Rating
Bearing L-840ZZ
$14.99
Main Shaft: OMA-2820-950 Main Shaft: OMA-2820-950
4.3 out of 5 Customer Rating
Main Shaft: OMA-2820-950
$6.99
Cover Plate: FS-120 III Cover Plate: FS-120 III
4.5 out of 5 Customer Rating
Cover Plate: FS-120 III
$6.33 Price reduced from $21.10 to
Clearance Sale! ⓘ
Crankshaft: GT15HZ Crankshaft: GT15HZ
5 out of 5 Customer Rating
Crankshaft: GT15HZ
$102.35
Cylinder Block: GT60 Cylinder Block: GT60
5 out of 5 Customer Rating
Cylinder Block: GT60
$233.99
Cylinder & Piston Assembly: 55AX Cylinder & Piston Assembly: 55AX
5 out of 5 Customer Rating
Cylinder & Piston Assembly: 55AX
$104.95
Cylinder Head: 91HZ-PS Cylinder Head: 91HZ-PS
3.7 out of 5 Customer Rating
Cylinder Head: 91HZ-PS
$89.99
Cylinder Liner: F91, 160, 320 Cylinder Liner: F91, 160, 320
4.7 out of 5 Customer Rating
Cylinder Liner: F91, 160, 320
$45.01
Gasket Set: 32SX-H Gasket Set: 32SX-H
5 out of 5 Customer Rating
Gasket Set: 32SX-H
$7.46
Muffler Screws #744B Muffler Screws #744B
5 out of 5 Customer Rating
Muffler Screws #744B
$6.49
Mixture Control Valve #61B: 91HZ Mixture Control Valve #61B: 91HZ
4.7 out of 5 Customer Rating
Mixture Control Valve #61B: 91HZ
$29.49
Needle Valve Assembly 61H: GT15 Needle Valve Assembly 61H: GT15
3.7 out of 5 Customer Rating
Needle Valve Assembly 61H: GT15
$22.04
Piston: FS-120 Piston: FS-120
3.3 out of 5 Customer Rating
Piston: FS-120
$51.47
Piston: 61-300 Piston: 61-300
4.7 out of 5 Customer Rating
Piston: 61-300
$38.84
Piston Pin with Pads: FS30S Piston Pin with Pads: FS30S
3.9 out of 5 Customer Rating
Piston Pin with Pads: FS30S
$9.85
Rocker Cover,, Black: FSa-72II Rocker Cover,, Black: FSa-72II
4.1 out of 5 Customer Rating
Rocker Cover,, Black: FSa-72II
$7.65 Price reduced from $25.51 to
Clearance Sale! ⓘ
Cap Screw 4x20mm (10): GT55 Cap Screw 4x20mm (10): GT55
3.9 out of 5 Customer Rating
Cap Screw 4x20mm (10): GT55
$11.80
Thrust Washer: 20-40FP Thrust Washer: 20-40FP
5 out of 5 Customer Rating
Thrust Washer: 20-40FP
$7.99
Valve Exhaust: FS-52 Surpass Valve Exhaust: FS-52 Surpass
3.3 out of 5 Customer Rating
Valve Exhaust: FS-52 Surpass
$19.14
Security Ring: OMA-2820-950 Security Ring: OMA-2820-950
3.9 out of 5 Customer Rating
Security Ring: OMA-2820-950
$5.99
Air Funnel #60RA: FS81 Alpha Air Funnel #60RA: FS81 Alpha
5 out of 5 Customer Rating
Air Funnel #60RA: FS81 Alpha
$5.74 Price reduced from $19.14 to
Clearance Sale! ⓘ
Carburetor #20C: 32SX-H HX Carburetor #20C: 32SX-H HX
3.3 out of 5 Customer Rating
Carburetor #20C: 32SX-H HX
$71.61
PowerBoost Pipe: 105HZ PowerBoost Pipe: 105HZ
5 out of 5 Customer Rating
PowerBoost Pipe: 105HZ
$293.00
Long Spinner Nut 1/4"-28 Long Spinner Nut 1/4"-28
4.1 out of 5 Customer Rating
Long Spinner Nut 1/4"-28
$11.80
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