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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289-312 of 1,808 Results
Crankshaft: O.S.SPEED R21GT2 Crankshaft: O.S.SPEED R21GT2
3.8 out of 5 Customer Rating
Crankshaft: O.S.SPEED R21GT2
$249.99
O.S. Carburetor Body 22E (B) Speed B2103 Type R O.S. Carburetor Body 22E (B) Speed B2103 Type R
5 out of 5 Customer Rating
O.S. Carburetor Body 22E (B) Speed B2103 Type R
$87.19
Connecting Rod: 18TM Connecting Rod: 18TM
4.8 out of 5 Customer Rating
Connecting Rod: 18TM
$48.51
Cylinder Rebuild Kit: R21 Cylinder Rebuild Kit: R21
4.4 out of 5 Customer Rating
Cylinder Rebuild Kit: R21
$188.45
Cylinder Assembly Rebuild Kit: 21XZ-R VII Cylinder Assembly Rebuild Kit: 21XZ-R VII
4.8 out of 5 Customer Rating
Cylinder Assembly Rebuild Kit: 21XZ-R VII
$276.13
Cylinder Piston Assembly: R21 Cylinder Piston Assembly: R21
4.4 out of 5 Customer Rating
Cylinder Piston Assembly: R21
$132.77
Cylinder & Piston Assembly: 25XZ Cylinder & Piston Assembly: 25XZ
5 out of 5 Customer Rating
Cylinder & Piston Assembly: 25XZ
$159.99
O.S. Outer Head OS Speed R21GT O.S. Outer Head OS Speed R21GT
4.4 out of 5 Customer Rating
O.S. Outer Head OS Speed R21GT
$132.29
Inner Head: R2101 Speed Inner Head: R2101 Speed
4 out of 5 Customer Rating
Inner Head: R2101 Speed
$52.69
Outer Head: 21XZ-R Outer Head: 21XZ-R
4.8 out of 5 Customer Rating
Outer Head: 21XZ-R
$69.99
Outer Head O.S.Speed B21 Adam Drake II Outer Head O.S.Speed B21 Adam Drake II
4.8 out of 5 Customer Rating
Outer Head O.S.Speed B21 Adam Drake II
$107.98
LC3 T-Maxx Revo Glow Plug Hot LC3 T-Maxx Revo Glow Plug Hot
4.2 out of 5 Customer Rating
LC3 T-Maxx Revo Glow Plug Hot
$11.99
T-2080 C-Ring T-2080 C-Ring
3.6 out of 5 Customer Rating
T-2080 C-Ring
$9.19
Carburetor Rotor: 40L-R, 55HZ-R Carburetor Rotor: 40L-R, 55HZ-R
4.8 out of 5 Customer Rating
Carburetor Rotor: 40L-R, 55HZ-R
$39.91
Cylinder Rebuild Kit: 21XZ-GT Speed Cylinder Rebuild Kit: 21XZ-GT Speed
4.4 out of 5 Customer Rating
Cylinder Rebuild Kit: 21XZ-GT Speed
$221.55
Cylinder & Piston B2101 Speed Cylinder & Piston B2101 Speed
5 out of 5 Customer Rating
Cylinder & Piston B2101 Speed
$193.68
Outer Head: O.S. Speed R2104 Outer Head: O.S. Speed R2104
3.6 out of 5 Customer Rating
Outer Head: O.S. Speed R2104
$148.60
Screw Set Speed (10): 21 V-Spec Screw Set Speed (10): 21 V-Spec
4.4 out of 5 Customer Rating
Screw Set Speed (10): 21 V-Spec
$9.99
Slide Valve Stop Screw #21J Slide Valve Stop Screw #21J
5 out of 5 Customer Rating
Slide Valve Stop Screw #21J
$11.87
#5 Recoil Starter Body #5 Recoil Starter Body
4.6 out of 5 Customer Rating
#5 Recoil Starter Body
$26.24
Ball Link No.5 18TM Ball Link No.5 18TM
4.4 out of 5 Customer Rating
Ball Link No.5 18TM
$16.09
Speed Hex Driver Replacement Tip 1.5 Speed Hex Driver Replacement Tip 1.5
4.4 out of 5 Customer Rating
Speed Hex Driver Replacement Tip 1.5
$18.39
Crankshaft O.S.Speed B21 Adam Drake II Crankshaft O.S.Speed B21 Adam Drake II
5 out of 5 Customer Rating
Crankshaft O.S.Speed B21 Adam Drake II
$193.59
Inner Head With O-Ring: O.S. Speed B2104 Inner Head With O-Ring: O.S. Speed B2104
3.8 out of 5 Customer Rating
Inner Head With O-Ring: O.S. Speed B2104
$59.01
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