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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1,038-1,085 of 1,758 Results
Exhaust Valve Assembly: 56 FS Exhaust Valve Assembly: 56 FS
3.9 out of 5 Customer Rating
Exhaust Valve Assembly: 56 FS
$5.72 Price reduced from $19.05 to
Clearance Sale! ⓘ
Crankcase: 50SX-H Crankcase: 50SX-H
3.1 out of 5 Customer Rating
Crankcase: 50SX-H
$67.24
Crank Pin Stop Screw: GT22 Crank Pin Stop Screw: GT22
4.1 out of 5 Customer Rating
Crank Pin Stop Screw: GT22
$10.94
Cylinder Head: GF30 Cylinder Head: GF30
3.3 out of 5 Customer Rating
Cylinder Head: GF30
$40.67 Price reduced from $135.55 to
Clearance Sale! ⓘ
Gasket Set: 120AX Gasket Set: 120AX
4.1 out of 5 Customer Rating
Gasket Set: 120AX
$10.94
Gasket: #3A2CBD Gasket: #3A2CBD
5 out of 5 Customer Rating
Gasket: #3A2CBD
$6.49
Gasket Head, .1mm: 105HZ Gasket Head, .1mm: 105HZ
5 out of 5 Customer Rating
Gasket Head, .1mm: 105HZ
$7.46
Intake Manifold: FT-120 160 Intake Manifold: FT-120 160
3.9 out of 5 Customer Rating
Intake Manifold: FT-120 160
$13.27 Price reduced from $44.22 to
Clearance Sale! ⓘ
Intake Pipe AS-L: FT-240 Intake Pipe AS-L: FT-240
5 out of 5 Customer Rating
Intake Pipe AS-L: FT-240
$22.16
Link Pin Retainer: FR5 Link Pin Retainer: FR5
5 out of 5 Customer Rating
Link Pin Retainer: FR5
$8.43
Locknut Set Spinner: FS-52 Locknut Set Spinner: FS-52
4.7 out of 5 Customer Rating
Locknut Set Spinner: FS-52
$22.26
Silencer Body F-5040: FS110A Silencer Body F-5040: FS110A
4.7 out of 5 Customer Rating
Silencer Body F-5040: FS110A
$48.41
Muffler Assembly Screw #842 Muffler Assembly Screw #842
4.1 out of 5 Customer Rating
Muffler Assembly Screw #842
$8.43
Pushrod: 200 Surpass Pushrod: 200 Surpass
3.3 out of 5 Customer Rating
Pushrod: 200 Surpass
$10.86
Piston Pin Retainer: GT55 (2) Piston Pin Retainer: GT55 (2)
4.5 out of 5 Customer Rating
Piston Pin Retainer: GT55 (2)
$2.24 Price reduced from $7.46 to
Clearance Sale! ⓘ
Piston Pin: 108FSR Piston Pin: 108FSR
4.7 out of 5 Customer Rating
Piston Pin: 108FSR
$14.75
Piston Pin: 40-46 Piston Pin: 40-46
5 out of 5 Customer Rating
Piston Pin: 40-46
$9.46
Prop Locknut :FS40- 48Surpass Prop Locknut :FS40- 48Surpass
3.3 out of 5 Customer Rating
Prop Locknut :FS40- 48Surpass
$17.08
Tappet Screw: FS-20 48 Tappet Screw: FS-20 48
5 out of 5 Customer Rating
Tappet Screw: FS-20 48
$8.49
Carburetor #10G: 15LA Carburetor #10G: 15LA
5 out of 5 Customer Rating
Carburetor #10G: 15LA
$25.29
Intake Manifold Assembly B: IL-300 Intake Manifold Assembly B: IL-300
5 out of 5 Customer Rating
Intake Manifold Assembly B: IL-300
$22.37
Rear Bearing: 40-50 Rear Bearing: 40-50
4.1 out of 5 Customer Rating
Rear Bearing: 40-50
$26.34
Carburetor Body: #60Y, FS110A Carburetor Body: #60Y, FS110A
3.3 out of 5 Customer Rating
Carburetor Body: #60Y, FS110A
$42.11
Carburetor: #80N, FS200S Carburetor: #80N, FS200S
4.7 out of 5 Customer Rating
Carburetor: #80N, FS200S
$97.90
Carburetor Rotor: #40E Carburetor Rotor: #40E
3.3 out of 5 Customer Rating
Carburetor Rotor: #40E
$22.99
Connecting Rod: 120AX Connecting Rod: 120AX
4.3 out of 5 Customer Rating
Connecting Rod: 120AX
$36.85
Exhaust Header Pipe M1021: 21TM Exhaust Header Pipe M1021: 21TM
3.7 out of 5 Customer Rating
Exhaust Header Pipe M1021: 21TM
$48.55
Carburetor Reducer 8mm, Red: 21VZB (P) V-Spec Carburetor Reducer 8mm, Red: 21VZB (P) V-Spec
3.7 out of 5 Customer Rating
Carburetor Reducer 8mm, Red: 21VZB (P) V-Spec
$11.80
Front Crankshaft Bearing: Speed T1202 Front Crankshaft Bearing: Speed T1202
5 out of 5 Customer Rating
Front Crankshaft Bearing: Speed T1202
$22.04
Carburetor: #11G Slide, 18CVR Carburetor: #11G Slide, 18CVR
3.3 out of 5 Customer Rating
Carburetor: #11G Slide, 18CVR
$87.29
Crankcase: 21XR-B Version II Crankcase: 21XR-B Version II
4.5 out of 5 Customer Rating
Crankcase: 21XR-B Version II
$21.46 Price reduced from $71.54 to
Clearance Sale! ⓘ
Inner Head: 28XZ Inner Head: 28XZ
5 out of 5 Customer Rating
Inner Head: 28XZ
$57.86
Dust Cap Set, 3mm (5) & Carburetor Nipple Dust Cap Set, 3mm (5) & Carburetor Nipple
4.7 out of 5 Customer Rating
Dust Cap Set, 3mm (5) & Carburetor Nipple
$9.85
Gasket Head, .2mm: 105HZ Gasket Head, .2mm: 105HZ
4.1 out of 5 Customer Rating
Gasket Head, .2mm: 105HZ
$7.46
T-2100SC Tuned Pipe T-2100SC Tuned Pipe
3.3 out of 5 Customer Rating
T-2100SC Tuned Pipe
$152.41
Crankcase: 21XZ-B Speed Crankcase: 21XZ-B Speed
5 out of 5 Customer Rating
Crankcase: 21XZ-B Speed
$139.99
Cylinder & Piston: 12TR (P)-T Cylinder & Piston: 12TR (P)-T
5 out of 5 Customer Rating
Cylinder & Piston: 12TR (P)-T
$75.99
Cylinder & Piston Assembly: 28XZ Cylinder & Piston Assembly: 28XZ
4.1 out of 5 Customer Rating
Cylinder & Piston Assembly: 28XZ
$52.97 Price reduced from $176.55 to
Clearance Sale! ⓘ
Dust Cover: 18TM Dust Cover: 18TM
3.3 out of 5 Customer Rating
Dust Cover: 18TM
$9.85
Drive Washer: 12TR Drive Washer: 12TR
3.3 out of 5 Customer Rating
Drive Washer: 12TR
$7.46
Metering Needle 12F2: 12XZ Speed Spec Metering Needle 12F2: 12XZ Speed Spec
4.7 out of 5 Customer Rating
Metering Needle 12F2: 12XZ Speed Spec
$5.74 Price reduced from $19.14 to
Clearance Sale! ⓘ
Cylinder Liner: 37SZ-H Cylinder Liner: 37SZ-H
3.3 out of 5 Customer Rating
Cylinder Liner: 37SZ-H
$38.67
Cylinder Liner: FS155A-P Cylinder Liner: FS155A-P
5 out of 5 Customer Rating
Cylinder Liner: FS155A-P
$58.85
Fuel Inlet Nipple: 12-240 Fuel Inlet Nipple: 12-240
4.9 out of 5 Customer Rating
Fuel Inlet Nipple: 12-240
$6.49
Ignition Module IG-02: GT33 Ignition Module IG-02: GT33
5 out of 5 Customer Rating
Ignition Module IG-02: GT33
$104.01
Nozzle: 15FP-S RN Nozzle: 15FP-S RN
5 out of 5 Customer Rating
Nozzle: 15FP-S RN
$9.85
O-Ring 10.5mm: GT55 O-Ring 10.5mm: GT55
5 out of 5 Customer Rating
O-Ring 10.5mm: GT55
$6.49
Piston Pin: 160FX Piston Pin: 160FX
5 out of 5 Customer Rating
Piston Pin: 160FX
$19.14
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