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 1,605 Results
Carburetor Body: 40L, 55HZ Hyper Carburetor Body: 40L, 55HZ Hyper
4.1 out of 5 Customer Rating
Carburetor Body: 40L, 55HZ Hyper
$23.00 Price reduced from $76.68 to
Clearance Sale! ⓘ
O.S. Carburetor Body 22D (B) Speed B2103 Type S O.S. Carburetor Body 22D (B) Speed B2103 Type S
4.1 out of 5 Customer Rating
O.S. Carburetor Body 22D (B) Speed B2103 Type S
$87.19
Carburetor Body: #20H Carburetor Body: #20H
3.7 out of 5 Customer Rating
Carburetor Body: #20H
$19.14
Carburetor Body: 22B, 21XR-B Carburetor Body: 22B, 21XR-B
4.1 out of 5 Customer Rating
Carburetor Body: 22B, 21XR-B
$18.95 Price reduced from $63.18 to
Clearance Sale! ⓘ
Crankcase: T1201 Speed Crankcase: T1201 Speed
5 out of 5 Customer Rating
Crankcase: T1201 Speed
$87.17
Crankcase: R21 Crankcase: R21
3.7 out of 5 Customer Rating
Crankcase: R21
$119.70
Crankcase: 12XZ Spec II Speed Crankcase: 12XZ Spec II Speed
4.1 out of 5 Customer Rating
Crankcase: 12XZ Spec II Speed
$21.00 Price reduced from $69.99 to
Clearance Sale! ⓘ
Crankcase: B2101 Speed Crankcase: B2101 Speed
5 out of 5 Customer Rating
Crankcase: B2101 Speed
$152.45
Crankcase: 120 Surpass Crankcase: 120 Surpass
3.7 out of 5 Customer Rating
Crankcase: 120 Surpass
$162.87
Powerboost Pipe: GT15HZ Powerboost Pipe: GT15HZ
5 out of 5 Customer Rating
Powerboost Pipe: GT15HZ
$281.62
Spinner Nut: 20-48 Spinner Nut: 20-48
4 out of 5 Customer Rating
Spinner Nut: 20-48
$11.91
Crankcase: GGT10 Crankcase: GGT10
4.1 out of 5 Customer Rating
Crankcase: GGT10
$104.09
Carburetor Body: #70A Carburetor Body: #70A
4.8 out of 5 Customer Rating
Carburetor Body: #70A
$13.79 Price reduced from $45.99 to
Clearance Sale! ⓘ
Cylinder & Piston: 25LA Cylinder & Piston: 25LA
5 out of 5 Customer Rating
Cylinder & Piston: 25LA
$35.48
Cylinder Rebuild Kit: 21XR-B Cylinder Rebuild Kit: 21XR-B
4.1 out of 5 Customer Rating
Cylinder Rebuild Kit: 21XR-B
$44.98 Price reduced from $149.93 to
Clearance Sale! ⓘ
Cylinder & Piston: 21XZ-GT Speed Cylinder & Piston: 21XZ-GT Speed
4.1 out of 5 Customer Rating
Cylinder & Piston: 21XZ-GT Speed
$177.63
Carburetor Body: 61R, FS81 Alpha Pump Carburetor Body: 61R, FS81 Alpha Pump
5 out of 5 Customer Rating
Carburetor Body: 61R, FS81 Alpha Pump
$87.39
Inner Head: speed 21XZ-B Spec III Inner Head: speed 21XZ-B Spec III
3.3 out of 5 Customer Rating
Inner Head: speed 21XZ-B Spec III
$15.81 Price reduced from $52.69 to
Clearance Sale! ⓘ
Inner Head: 28XZ Inner Head: 28XZ
5 out of 5 Customer Rating
Inner Head: 28XZ
$57.86
Connecting Rod: 56 FS Connecting Rod: 56 FS
3.2 out of 5 Customer Rating
Connecting Rod: 56 FS
$22.04
O.S. Pistion Pin: .12XZ O.S. Pistion Pin: .12XZ
4.8 out of 5 Customer Rating
O.S. Pistion Pin: .12XZ
$8.99
Heat Sink Head: 30VG Heat Sink Head: 30VG
3.1 out of 5 Customer Rating
Heat Sink Head: 30VG
$91.34
Cylinder Head: FS81 Alpha Cylinder Head: FS81 Alpha
5 out of 5 Customer Rating
Cylinder Head: FS81 Alpha
$76.86
Inner Head: 25XZ Inner Head: 25XZ
3.7 out of 5 Customer Rating
Inner Head: 25XZ
$57.99
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