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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145-192 of 1,758 Results
Front Bearing: 21-61 Front Bearing: 21-61
4.8 out of 5 Customer Rating
Front Bearing: 21-61
$21.17
Pump Fixing Screw Assembly: 91SZ-H Hyper Pump Fixing Screw Assembly: 91SZ-H Hyper
4.2 out of 5 Customer Rating
Pump Fixing Screw Assembly: 91SZ-H Hyper
$5.70
Rear Bearing: 50SX-H, 55HZ, 55AX Rear Bearing: 50SX-H, 55HZ, 55AX
5 out of 5 Customer Rating
Rear Bearing: 50SX-H, 55HZ, 55AX
$34.76
Cover Plate: GF30 II Cover Plate: GF30 II
4.2 out of 5 Customer Rating
Cover Plate: GF30 II
$44.17
Carburetor 12D2: 12TG VII Carburetor 12D2: 12TG VII
5 out of 5 Customer Rating
Carburetor 12D2: 12TG VII
$135.44
Carburetor 22B: 21XR-B Carburetor 22B: 21XR-B
4.8 out of 5 Customer Rating
Carburetor 22B: 21XR-B
$119.78
Air Funnel: 56FS Air Funnel: 56FS
4.4 out of 5 Customer Rating
Air Funnel: 56FS
$5.28 Price reduced from $17.08 to
Clearance Sale! ⓘ
Plug Terminal: Sirius 7 Plug Terminal: Sirius 7
4.2 out of 5 Customer Rating
Plug Terminal: Sirius 7
$10.94
Carburetor Rotor: 61T, FS-62V Carburetor Rotor: 61T, FS-62V
3.6 out of 5 Customer Rating
Carburetor Rotor: 61T, FS-62V
$9.13 Price reduced from $30.44 to
Clearance Sale! ⓘ
Carburetor Complete #61N: FS72 Alpha Carburetor Complete #61N: FS72 Alpha
5 out of 5 Customer Rating
Carburetor Complete #61N: FS72 Alpha
$102.96
Universal Nipple: #15, 21M Universal Nipple: #15, 21M
4.2 out of 5 Customer Rating
Universal Nipple: #15, 21M
$3.26 Price reduced from $10.86 to
Clearance Sale! ⓘ
Cam Cover Screws: FS-70 Ultimate (2) Cam Cover Screws: FS-70 Ultimate (2)
4.8 out of 5 Customer Rating
Cam Cover Screws: FS-70 Ultimate (2)
$7.46
Carburetor Rotor: #60J Carburetor Rotor: #60J
4.4 out of 5 Customer Rating
Carburetor Rotor: #60J
$13.78
Carburetor Rotor: #120AX Carburetor Rotor: #120AX
5 out of 5 Customer Rating
Carburetor Rotor: #120AX
$37.80
Carburetor: GT15HZ Carburetor: GT15HZ
5 out of 5 Customer Rating
Carburetor: GT15HZ
$190.20
60 Degree Exhaust Header: 155FS-a 60 Degree Exhaust Header: 155FS-a
4.8 out of 5 Customer Rating
60 Degree Exhaust Header: 155FS-a
$14.55 Price reduced from $48.51 to
Clearance Sale! ⓘ
Cam Cover: FS-20 Supass Cam Cover: FS-20 Supass
4 out of 5 Customer Rating
Cam Cover: FS-20 Supass
$7.99
Carburetor Reducer 8mm, Red: Speed 21 V-Spec Carburetor Reducer 8mm, Red: Speed 21 V-Spec
4 out of 5 Customer Rating
Carburetor Reducer 8mm, Red: Speed 21 V-Spec
$21.10
103 Air Cleaner Body 103 Air Cleaner Body
4.8 out of 5 Customer Rating
103 Air Cleaner Body
$10.99
Heat Sink Head: 37SZ-H Heat Sink Head: 37SZ-H
4 out of 5 Customer Rating
Heat Sink Head: 37SZ-H
$50.72
Silencer: F-6010, 200 Surpass Silencer: F-6010, 200 Surpass
4 out of 5 Customer Rating
Silencer: F-6010, 200 Surpass
$87.15
Rear Bearing: FS52 Rear Bearing: FS52
5 out of 5 Customer Rating
Rear Bearing: FS52
$22.04
Rear Bearing: GT60 Rear Bearing: GT60
3.8 out of 5 Customer Rating
Rear Bearing: GT60
$25.44
Cam Gear: Sirius 7 Cam Gear: Sirius 7
4 out of 5 Customer Rating
Cam Gear: Sirius 7
$19.29 Price reduced from $52.66 to
Clearance Sale! ⓘ
Carburetor Retaining Screws: 2.6x18mm (10) Carburetor Retaining Screws: 2.6x18mm (10)
4.4 out of 5 Customer Rating
Carburetor Retaining Screws: 2.6x18mm (10)
$9.85
Connecting Rod: FS72 Alpha Connecting Rod: FS72 Alpha
4.2 out of 5 Customer Rating
Connecting Rod: FS72 Alpha
$26.24
Crankcase: 15LA Natural Crankcase: 15LA Natural
4.8 out of 5 Customer Rating
Crankcase: 15LA Natural
$29.49
Outer Head: 21XZ-R Speed Outer Head: 21XZ-R Speed
5 out of 5 Customer Rating
Outer Head: 21XZ-R Speed
$102.35
Cylinder Head: 91HZR Cylinder Head: 91HZR
5 out of 5 Customer Rating
Cylinder Head: 91HZR
$99.54
Carburetor Reducer 7.0MM AL2, Blue Carburetor Reducer 7.0MM AL2, Blue
5 out of 5 Customer Rating
Carburetor Reducer 7.0MM AL2, Blue
$20.05
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
Cap Screw 5x50mm (10): GT55 Cap Screw 5x50mm (10): GT55
5 out of 5 Customer Rating
Cap Screw 5x50mm (10): GT55
$13.78
Hex Head Screw M3 (10): 91SZ-H Hex Head Screw M3 (10): 91SZ-H
5 out of 5 Customer Rating
Hex Head Screw M3 (10): 91SZ-H
$9.85
Pushrod Cover: FS155A-P Pushrod Cover: FS155A-P
5 out of 5 Customer Rating
Pushrod Cover: FS155A-P
$10.94
Piston: FS-95V Piston: FS-95V
5 out of 5 Customer Rating
Piston: FS-95V
$48.43
Piston Pin: 18CV-R Piston Pin: 18CV-R
4.4 out of 5 Customer Rating
Piston Pin: 18CV-R
$4.22 Price reduced from $14.07 to
Clearance Sale! ⓘ
Hex Head Screw 4x15mm (10) Hex Head Screw 4x15mm (10)
5 out of 5 Customer Rating
Hex Head Screw 4x15mm (10)
$11.80
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! ⓘ
Piston Ring: 32FH Piston Ring: 32FH
5 out of 5 Customer Rating
Piston Ring: 32FH
$26.24
Piston Ring: 120AX Piston Ring: 120AX
4.4 out of 5 Customer Rating
Piston Ring: 120AX
$33.61
Screw Set (12): FS-40 Surpass Screw Set (12): FS-40 Surpass
5 out of 5 Customer Rating
Screw Set (12): FS-40 Surpass
$9.44
Cap Screw 3x28mm (10) Cap Screw 3x28mm (10)
3.6 out of 5 Customer Rating
Cap Screw 3x28mm (10)
$9.85
Prop Nut Safety: FT-120 II FT-160 Prop Nut Safety: FT-120 II FT-160
3.2 out of 5 Customer Rating
Prop Nut Safety: FT-120 II FT-160
$36.85
Prop Washer: GT55 Prop Washer: GT55
4.8 out of 5 Customer Rating
Prop Washer: GT55
$9.85
Pushrod: FS-95V Pushrod: FS-95V
4.2 out of 5 Customer Rating
Pushrod: FS-95V
$10.49
Rear Housing: FT-160 Rear Housing: FT-160
5 out of 5 Customer Rating
Rear Housing: FT-160
$97.81
Rear Housing: GT60 Rear Housing: GT60
4.4 out of 5 Customer Rating
Rear Housing: GT60
$87.18
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