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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78-125 of 1,758 Results
Idle Adj Valve; FS-90/120 Idle Adj Valve; FS-90/120
4.7 out of 5 Customer Rating
Idle Adj Valve; FS-90/120
$11.80
42mm Carbon Fiber Propeller: 21XM 42mm Carbon Fiber Propeller: 21XM
5 out of 5 Customer Rating
42mm Carbon Fiber Propeller: 21XM
$20.05
Screw Set (10): 21XM Screw Set (10): 21XM
5 out of 5 Customer Rating
Screw Set (10): 21XM
$11.75
Rear Board Unit Fixing Screw: 21XM V2 Outboard Rear Board Unit Fixing Screw: 21XM V2 Outboard
5 out of 5 Customer Rating
Rear Board Unit Fixing Screw: 21XM V2 Outboard
$10.86
Steering Arm: 21XM Steering Arm: 21XM
4.7 out of 5 Customer Rating
Steering Arm: 21XM
$13.75
Gasket Cover: 21XM V2 Outboard Marine Gasket Cover: 21XM V2 Outboard Marine
5 out of 5 Customer Rating
Gasket Cover: 21XM V2 Outboard Marine
$6.49
#8 Glow Plug Long Medium Air Car #8 Glow Plug Long Medium Air Car
4.1 out of 5 Customer Rating
#8 Glow Plug Long Medium Air Car
$11.99
Cylinder Head: 95AX Cylinder Head: 95AX
3.4 out of 5 Customer Rating
Cylinder Head: 95AX
$48.41
Piston: 37SZ-H Piston: 37SZ-H
3.6 out of 5 Customer Rating
Piston: 37SZ-H
$32.56
Locknut Set: FS-120 Surpass Locknut Set: FS-120 Surpass
5 out of 5 Customer Rating
Locknut Set: FS-120 Surpass
$26.24
Carburetor: #11K Slide, 18TZ, 21TM Carburetor: #11K Slide, 18TZ, 21TM
3.3 out of 5 Customer Rating
Carburetor: #11K Slide, 18TZ, 21TM
$96.66
Drive Washer: FS-95V8 Drive Washer: FS-95V8
3.4 out of 5 Customer Rating
Drive Washer: FS-95V8
$10.94
Rotor Spring #2CK #2B Rotor Spring #2CK #2B
5 out of 5 Customer Rating
Rotor Spring #2CK #2B
$6.49
Inner Head O-Ring: (S-32)(Black) B2104 Inner Head O-Ring: (S-32)(Black) B2104
4.9 out of 5 Customer Rating
Inner Head O-Ring: (S-32)(Black) B2104
$10.70
P3 Turbo Glow Plug V-Spec Ultra Hot Off-Road P3 Turbo Glow Plug V-Spec Ultra Hot Off-Road
3.9 out of 5 Customer Rating
P3 Turbo Glow Plug V-Spec Ultra Hot Off-Road
$14.99
Rear Bearing: FS-62V Rear Bearing: FS-62V
4.5 out of 5 Customer Rating
Rear Bearing: FS-62V
$25.19
Front Bearing: GT55 Front Bearing: GT55
3.7 out of 5 Customer Rating
Front Bearing: GT55
$30.44
Rear Bearing: 25FX, 32F Rear Bearing: 25FX, 32F
4.1 out of 5 Customer Rating
Rear Bearing: 25FX, 32F
$21.17
Bearing Rear: 65AX Bearing Rear: 65AX
5 out of 5 Customer Rating
Bearing Rear: 65AX
$22.16
Rear Bearing: 61RX, SX-H Rear Bearing: 61RX, SX-H
4.5 out of 5 Customer Rating
Rear Bearing: 61RX, SX-H
$30.44
Plug Cable: Sirius 7 Plug Cable: Sirius 7
3.1 out of 5 Customer Rating
Plug Cable: Sirius 7
$10.94
Cylinder and Piston Assembly: O.S. Speed B2104 Cylinder and Piston Assembly: O.S. Speed B2104
4.5 out of 5 Customer Rating
Cylinder and Piston Assembly: O.S. Speed B2104
$193.70
Carb Reducer 7.5mm, Blue Carb Reducer 7.5mm, Blue
5 out of 5 Customer Rating
Carb Reducer 7.5mm, Blue
$20.99
Diaphragm (PD-09): GF30 II Diaphragm (PD-09): GF30 II
4.5 out of 5 Customer Rating
Diaphragm (PD-09): GF30 II
$7.99
Carburetor Complete 70T2: GF30 II Carburetor Complete 70T2: GF30 II
5 out of 5 Customer Rating
Carburetor Complete 70T2: GF30 II
$174.34
Carburetor Reducer 6mm: Speed 21 V-Spec II Carburetor Reducer 6mm: Speed 21 V-Spec II
3.3 out of 5 Customer Rating
Carburetor Reducer 6mm: Speed 21 V-Spec II
$20.05
Intake Manifold Assembly A: IL-300 Dia Star Intake Manifold Assembly A: IL-300 Dia Star
4.1 out of 5 Customer Rating
Intake Manifold Assembly A: IL-300 Dia Star
$11.05 Price reduced from $36.85 to
Clearance Sale! ⓘ
Cylinder Head: 25LA Natural Cylinder Head: 25LA Natural
5 out of 5 Customer Rating
Cylinder Head: 25LA Natural
$17.08
Locknut Set: FT, FR5 Locknut Set: FT, FR5
4.1 out of 5 Customer Rating
Locknut Set: FT, FR5
$41.12
Cam Holder: Sirius 7 Cam Holder: Sirius 7
5 out of 5 Customer Rating
Cam Holder: Sirius 7
$48.41
Nipple: GGT10 Nipple: GGT10
4.5 out of 5 Customer Rating
Nipple: GGT10
$7.57 Price reduced from $25.25 to
Clearance Sale! ⓘ
Cam Cover: 56 FS Cam Cover: 56 FS
4.5 out of 5 Customer Rating
Cam Cover: 56 FS
$3.57 Price reduced from $11.91 to
Clearance Sale! ⓘ
Cam Follower: 200 Surpass Cam Follower: 200 Surpass
3.3 out of 5 Customer Rating
Cam Follower: 200 Surpass
$22.26
Camshaft Bearing: F 40-120 Camshaft Bearing: F 40-120
3.1 out of 5 Customer Rating
Camshaft Bearing: F 40-120
$17.16
Camshaft: FS-40, 48 Surpass Camshaft: FS-40, 48 Surpass
3.7 out of 5 Customer Rating
Camshaft: FS-40, 48 Surpass
$41.94
Needle Adj Screw New: #60B Needle Adj Screw New: #60B
3.3 out of 5 Customer Rating
Needle Adj Screw New: #60B
$7.57
Meter Needle Assembly #12FB: 12XZ Speed Meter Needle Assembly #12FB: 12XZ Speed
5 out of 5 Customer Rating
Meter Needle Assembly #12FB: 12XZ Speed
$17.99
Piston Pin: 25XZ Piston Pin: 25XZ
5 out of 5 Customer Rating
Piston Pin: 25XZ
$7.99
Piston Pin: 25F FP Piston Pin: 25F FP
3.3 out of 5 Customer Rating
Piston Pin: 25F FP
$9.85
O-Ring Muffler Gasket F6020: FS155A-P O-Ring Muffler Gasket F6020: FS155A-P
5 out of 5 Customer Rating
O-Ring Muffler Gasket F6020: FS155A-P
$8.49
O-Ring PRC: 120Surpass O-Ring PRC: 120Surpass
4.7 out of 5 Customer Rating
O-Ring PRC: 120Surpass
$6.49
Screw Assembly: F-5030 FS81 Alpha Screw Assembly: F-5030 FS81 Alpha
4.3 out of 5 Customer Rating
Screw Assembly: F-5030 FS81 Alpha
$9.85
Muffler Assembly Screw #843 #892 Muffler Assembly Screw #843 #892
3.3 out of 5 Customer Rating
Muffler Assembly Screw #843 #892
$8.43
Piston Pin: 40 46VFR Piston Pin: 40 46VFR
5 out of 5 Customer Rating
Piston Pin: 40 46VFR
$9.85
Outer Head: 21XZ-B Spec 2 Outer Head: 21XZ-B Spec 2
3.7 out of 5 Customer Rating
Outer Head: 21XZ-B Spec 2
$125.67
Cylinder Head: FT-160 Cylinder Head: FT-160
4.5 out of 5 Customer Rating
Cylinder Head: FT-160
$87.19
Cylinder Head: FF-320 Cylinder Head: FF-320
5 out of 5 Customer Rating
Cylinder Head: FF-320
$76.85
Cylinder Head with Valve: FS-40 Surpass Cylinder Head with Valve: FS-40 Surpass
5 out of 5 Customer Rating
Cylinder Head with Valve: FS-40 Surpass
$87.39
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