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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937-960 of 1,812 Results
Crankcase: 21XZ-R Speed Crankcase: 21XZ-R Speed
5 out of 5 Customer Rating
Crankcase: 21XZ-R Speed
$157.24
O.S. Cover Plate Speed B2103 Type R & Type S O.S. Cover Plate Speed B2103 Type R & Type S
3.4 out of 5 Customer Rating
O.S. Cover Plate Speed B2103 Type R & Type S
$25.40
Crankshaft: 19XZ-B Speed Crankshaft: 19XZ-B Speed
4.8 out of 5 Customer Rating
Crankshaft: 19XZ-B Speed
$52.61 Price reduced from $175.75 to
Clearance Sale! ⓘ
O.S. Cylindr & Piston Assy OS Speed R21GT O.S. Cylindr & Piston Assy OS Speed R21GT
4.4 out of 5 Customer Rating
O.S. Cylindr & Piston Assy OS Speed R21GT
$232.21
Cylinder & Piston Set: O.S. Max .12 TG Version 4 Cylinder & Piston Set: O.S. Max .12 TG Version 4
5 out of 5 Customer Rating
Cylinder & Piston Set: O.S. Max .12 TG Version 4
$78.13
Outer Head O.S. Speed T1204 Outer Head O.S. Speed T1204
3.8 out of 5 Customer Rating
Outer Head O.S. Speed T1204
$89.99
103 Air Cleaner Body 103 Air Cleaner Body
4.8 out of 5 Customer Rating
103 Air Cleaner Body
$10.99
Carburetor 22B2: 21XZ-B V2 Carburetor 22B2: 21XZ-B V2
5 out of 5 Customer Rating
Carburetor 22B2: 21XZ-B V2
$129.99
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
T-2090SC Tune Pipe Set: 21XZ-B, 21VZ-B, 25XZ, 30VG T-2090SC Tune Pipe Set: 21XZ-B, 21VZ-B, 25XZ, 30VG
5 out of 5 Customer Rating
T-2090SC Tune Pipe Set: 21XZ-B, 21VZ-B, 25XZ, 30VG
$217.45
Connecting Rod: 30VG Connecting Rod: 30VG
5 out of 5 Customer Rating
Connecting Rod: 30VG
$27.48
Crankshaft: 30VG Crankshaft: 30VG
4 out of 5 Customer Rating
Crankshaft: 30VG
$52.99
Cylinder/Piston/Rod: T1201 Speed Cylinder/Piston/Rod: T1201 Speed
5 out of 5 Customer Rating
Cylinder/Piston/Rod: T1201 Speed
$193.94
Cylinder Rebuild Kit: 21XZ-B Spec 2 Cylinder Rebuild Kit: 21XZ-B Spec 2
4 out of 5 Customer Rating
Cylinder Rebuild Kit: 21XZ-B Spec 2
$254.73
Cylinder Piston Rod Rebuild Kit: R2103 Speed Cylinder Piston Rod Rebuild Kit: R2103 Speed
5 out of 5 Customer Rating
Cylinder Piston Rod Rebuild Kit: R2103 Speed
$253.61
Outer Head: R21 Outer Head: R21
3.6 out of 5 Customer Rating
Outer Head: R21
$96.84
Inner Head: 19XZ-B Speed Inner Head: 19XZ-B Speed
5 out of 5 Customer Rating
Inner Head: 19XZ-B Speed
$57.73
Inner Head: B2101 Speed Inner Head: B2101 Speed
4.4 out of 5 Customer Rating
Inner Head: B2101 Speed
$57.96
Dust Cap Set: RZ-V P Dust Cap Set: RZ-V P
5 out of 5 Customer Rating
Dust Cap Set: RZ-V P
$7.46
Dust Cap Set: 12-30 Class Dust Cap Set: 12-30 Class
3.6 out of 5 Customer Rating
Dust Cap Set: 12-30 Class
$9.85
Screw Idle Speed WLA-2: GT55 Screw Idle Speed WLA-2: GT55
3.4 out of 5 Customer Rating
Screw Idle Speed WLA-2: GT55
$23.99
Mixture Control Screw #11L Mixture Control Screw #11L
5 out of 5 Customer Rating
Mixture Control Screw #11L
$11.80
Slide Valve 12F2: 12XZ Speed Spec 3 Slide Valve 12F2: 12XZ Speed Spec 3
4 out of 5 Customer Rating
Slide Valve 12F2: 12XZ Speed Spec 3
$33.61
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