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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577-624 of 1,758 Results
Vavle Exhaust: FS-91 Surpass Vavle Exhaust: FS-91 Surpass
5 out of 5 Customer Rating
$34.86
Air Funnel: 56FS Air Funnel: 56FS
4.4 out of 5 Customer Rating
$5.28 Price reduced from $17.08 to
Clearance Sale!
Carburetor: GT15HZ Carburetor: GT15HZ
5 out of 5 Customer Rating
$190.20
Piston Ring: 70SZ-H Piston Ring: 70SZ-H
5 out of 5 Customer Rating
$26.24
Cam Cover Screws: FS-70 Ultimate (2) Cam Cover Screws: FS-70 Ultimate (2)
4.8 out of 5 Customer Rating
$7.46
Carburetor Retaining Screws: 2.6x18mm (10) Carburetor Retaining Screws: 2.6x18mm (10)
4.4 out of 5 Customer Rating
$9.85
Connecting Rod: 56 FS Connecting Rod: 56 FS
3.2 out of 5 Customer Rating
$22.04
Connecting Rod: 91SX-H Complete Connecting Rod: 91SX-H Complete
5 out of 5 Customer Rating
$27.48
Cover Plate Gasket: 75AX Cover Plate Gasket: 75AX
4 out of 5 Customer Rating
$6.49
Cover Plate: 15LA Cover Plate: 15LA
4 out of 5 Customer Rating
$10.86
Cover Plate: 120AX Cover Plate: 120AX
4 out of 5 Customer Rating
$17.16
Cover Plate: FL-70 Cover Plate: FL-70
5 out of 5 Customer Rating
$9.99
Crankcase: FS72 Alpha Crankcase: FS72 Alpha
5 out of 5 Customer Rating
$29.79 Price reduced from $87.39 to
Clearance Sale!
Cylinder Head: FS72 Alpha Cylinder Head: FS72 Alpha
4.2 out of 5 Customer Rating
$76.70
Cylinder Liner: GT33 Cylinder Liner: GT33
3.6 out of 5 Customer Rating
$23.48 Price reduced from $78.25 to
Clearance Sale!
Drive Gear Screw: 240-300 Drive Gear Screw: 240-300
3.6 out of 5 Customer Rating
$6.49
Lever Metering Pin WLA-2: GT55 Lever Metering Pin WLA-2: GT55
4.8 out of 5 Customer Rating
$1.95 Price reduced from $6.49 to
Clearance Sale!
Nozzle Assembly: FL-70 Nozzle Assembly: FL-70
3.6 out of 5 Customer Rating
$21.10
Pushrod Cover: FS155A-P Pushrod Cover: FS155A-P
5 out of 5 Customer Rating
$10.94
Piston: FS-95V Piston: FS-95V
5 out of 5 Customer Rating
$48.43
Piston: GGT10 Piston: GGT10
5 out of 5 Customer Rating
$52.58
Piston Ring: 32FH Piston Ring: 32FH
5 out of 5 Customer Rating
$26.24
Rotor Gear Screw: 30Wankel Rotor Gear Screw: 30Wankel
5 out of 5 Customer Rating
$4.15 Price reduced from $13.83 to
Clearance Sale!
Screw Set (12): FS-40 Surpass Screw Set (12): FS-40 Surpass
5 out of 5 Customer Rating
$9.44
Valve Assembly Exhaust: FS-52 Surpass Valve Assembly Exhaust: FS-52 Surpass
5 out of 5 Customer Rating
$22.26
Slide Valve 2 (21M) Slide Valve 2 (21M)
5 out of 5 Customer Rating
$32.99
Heatsink Head 55HZ.HZ-R Heatsink Head 55HZ.HZ-R
4.7 out of 5 Customer Rating
$138.99
Camshaft Bearing: F 40-120 Camshaft Bearing: F 40-120
3.1 out of 5 Customer Rating
$17.16
Nipple: GGT10 Nipple: GGT10
4.5 out of 5 Customer Rating
$7.57 Price reduced from $25.25 to
Clearance Sale!
Carburetor Body: 40L, 55HZ Hyper Carburetor Body: 40L, 55HZ Hyper
4.1 out of 5 Customer Rating
$23.00 Price reduced from $76.68 to
Clearance Sale!
Crankcase: FS81 Alpha Crankcase: FS81 Alpha
4.1 out of 5 Customer Rating
$87.19
Crankshaft: FT-120 160 Crankshaft: FT-120 160
4.1 out of 5 Customer Rating
$87.53 Price reduced from $199.31 to
Clearance Sale!
Cylinder Head with Valve: FS-91-P Cylinder Head with Valve: FS-91-P
4.5 out of 5 Customer Rating
$135.63
Insulator, 60K Insulator, 60K
3.7 out of 5 Customer Rating
$19.05
Cylinder Head Gasket: 25AX Cylinder Head Gasket: 25AX
5 out of 5 Customer Rating
$6.49
Gasket Head: 46AXII Gasket Head: 46AXII
4.1 out of 5 Customer Rating
$6.49
Intake Pipe Left: FT-120 240 Intake Pipe Left: FT-120 240
4.1 out of 5 Customer Rating
$21.10
Muffler Assembly Screw F-4050: FS-62V Muffler Assembly Screw F-4050: FS-62V
4.7 out of 5 Customer Rating
$2.85 Price reduced from $9.49 to
Clearance Sale!
Needle Assembly: #60K/C Needle Assembly: #60K/C
4.3 out of 5 Customer Rating
$8.88 Price reduced from $29.60 to
Clearance Sale!
Shaft Throttle WLA-2: GT55 Shaft Throttle WLA-2: GT55
5 out of 5 Customer Rating
$29.60
Throttle Lever Assembly: GT15HZ Throttle Lever Assembly: GT15HZ
4.1 out of 5 Customer Rating
$9.49
Cover Plate: FS-62V Cover Plate: FS-62V
4.5 out of 5 Customer Rating
$4.73 Price reduced from $15.76 to
Clearance Sale!
Crankcase: 25FX Crankcase: 25FX
5 out of 5 Customer Rating
$44.10
Crankshaft: 70SZ-H Crankshaft: 70SZ-H
3.3 out of 5 Customer Rating
$20.40 Price reduced from $67.99 to
Clearance Sale!
Crankshaft: GGT10 Crankshaft: GGT10
3.7 out of 5 Customer Rating
$19.84 Price reduced from $66.13 to
Clearance Sale!
Drive Shaft Fixing Screw: Sirius 7 Drive Shaft Fixing Screw: Sirius 7
5 out of 5 Customer Rating
$4.43 Price reduced from $14.75 to
Clearance Sale!
Drive Washer: FS-62V Drive Washer: FS-62V
4.5 out of 5 Customer Rating
$10.94
Super Can Filter, Large Super Can Filter, Large
5 out of 5 Customer Rating
$14.99