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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1,273-1,296 of 1,808 Results
Hyper Head: 50SX-H Hyper Head: 50SX-H
5 out of 5 Customer Rating
Hyper Head: 50SX-H
$97.88
Locknut Set: FS-120 Surpass Locknut Set: FS-120 Surpass
5 out of 5 Customer Rating
Locknut Set: FS-120 Surpass
$26.24
Silencer Set: F6040, GF40 Silencer Set: F6040, GF40
5 out of 5 Customer Rating
Silencer Set: F6040, GF40
$97.82
Silencer: F-4020, 56FS Silencer: F-4020, 56FS
5 out of 5 Customer Rating
Silencer: F-4020, 56FS
$48.51
Breather Nipple: 120-300 Breather Nipple: 120-300
5 out of 5 Customer Rating
Breather Nipple: 120-300
$6.49
Camshaft Gear: FR5-300 Camshaft Gear: FR5-300
3.7 out of 5 Customer Rating
Camshaft Gear: FR5-300
$44.13
Camshaft: FS-120 Surpass Camshaft: FS-120 Surpass
4.1 out of 5 Customer Rating
Camshaft: FS-120 Surpass
$60.72
Carburetor Body: 75AX Carburetor Body: 75AX
5 out of 5 Customer Rating
Carburetor Body: 75AX
$48.51
Carburetor Insert: 80T, Sirius 7 Carburetor Insert: 80T, Sirius 7
3.3 out of 5 Customer Rating
Carburetor Insert: 80T, Sirius 7
$13.83
Connecting Rod: FS-95V Connecting Rod: FS-95V
5 out of 5 Customer Rating
Connecting Rod: FS-95V
$30.44
Cover Plate Assembly: 15LA Cover Plate Assembly: 15LA
4.1 out of 5 Customer Rating
Cover Plate Assembly: 15LA
$17.03
Starting Shaft: 18TM Starting Shaft: 18TM
3.9 out of 5 Customer Rating
Starting Shaft: 18TM
$17.01
Speed Flywheel Key Speed Flywheel Key
5 out of 5 Customer Rating
Speed Flywheel Key
$36.84
Inner Head O.S.Speed B21 Adam Drake II Inner Head O.S.Speed B21 Adam Drake II
3.7 out of 5 Customer Rating
Inner Head O.S.Speed B21 Adam Drake II
$57.75
Thrust Plate: O.S. Speed B2104 Thrust Plate: O.S. Speed B2104
5 out of 5 Customer Rating
Thrust Plate: O.S. Speed B2104
$9.53
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
Carburetor Body: 22B, 21XR-B Carburetor Body: 22B, 21XR-B
4.1 out of 5 Customer Rating
Carburetor Body: 22B, 21XR-B
$63.18
Crankcase: R21 Crankcase: R21
3.7 out of 5 Customer Rating
Crankcase: R21
$119.70
Crankcase: 30VG Crankcase: 30VG
4.5 out of 5 Customer Rating
Crankcase: 30VG
$87.39
Cylinder & Piston: 15CV Cylinder & Piston: 15CV
5 out of 5 Customer Rating
Cylinder & Piston: 15CV
$64.42
Outer Head: B2101 Speed Outer Head: B2101 Speed
3.3 out of 5 Customer Rating
Outer Head: B2101 Speed
$108.03
Mixture Control Valve: 12F2 Mixture Control Valve: 12F2
5 out of 5 Customer Rating
Mixture Control Valve: 12F2
$17.16
Inner Head: T1204 with O-Ring Inner Head: T1204 with O-Ring
4.9 out of 5 Customer Rating
Inner Head: T1204 with O-Ring
$39.26
101/102 Elements (6) 101/102 Elements (6)
4.1 out of 5 Customer Rating
101/102 Elements (6)
$13.83
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