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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49-72 of 1,808 Results
42mm Carbon Fiber Propeller: 21XM 42mm Carbon Fiber Propeller: 21XM
5 out of 5 Customer Rating
42mm Carbon Fiber Propeller: 21XM
$20.05
Connecting Rod: RXB/R/M Connecting Rod: RXB/R/M
4.4 out of 5 Customer Rating
Connecting Rod: RXB/R/M
$26.24
Crankshaft: 21XM V2 Outboard Marine Crankshaft: 21XM V2 Outboard Marine
5 out of 5 Customer Rating
Crankshaft: 21XM V2 Outboard Marine
$130.94
Prop Shaft: 21XM Prop Shaft: 21XM
5 out of 5 Customer Rating
Prop Shaft: 21XM
$57.74
Side Plate: 21XM Side Plate: 21XM
3.3 out of 5 Customer Rating
Side Plate: 21XM
$22.24
Cylinder & Piston Assembly: 21XM V2 Outboard Marine Cylinder & Piston Assembly: 21XM V2 Outboard Marine
4.1 out of 5 Customer Rating
Cylinder & Piston Assembly: 21XM V2 Outboard Marine
$155.31
Gasket Head: 21XM V2 Outboard Marine Gasket Head: 21XM V2 Outboard Marine
4.7 out of 5 Customer Rating
Gasket Head: 21XM V2 Outboard Marine
$6.49
Outboard Unit Assembly: 21XM V2 Outboard Marine Outboard Unit Assembly: 21XM V2 Outboard Marine
5 out of 5 Customer Rating
Outboard Unit Assembly: 21XM V2 Outboard Marine
$270.99
Upper Arm: 21XM Upper Arm: 21XM
5 out of 5 Customer Rating
Upper Arm: 21XM
$22.24
Rotor Spring #4B #4D #4C Rotor Spring #4B #4D #4C
4.1 out of 5 Customer Rating
Rotor Spring #4B #4D #4C
$6.49
Screw Set CZ-MX (8) Screw Set CZ-MX (8)
4.7 out of 5 Customer Rating
Screw Set CZ-MX (8)
$7.46
Mount Plate: 21XM Mount Plate: 21XM
3.7 out of 5 Customer Rating
Mount Plate: 21XM
$22.24
Flex Shaft Assembl:y 21XM Flex Shaft Assembl:y 21XM
5 out of 5 Customer Rating
Flex Shaft Assembl:y 21XM
$29.46
Muffler Assembly Screws #E-2050 (4) Muffler Assembly Screws #E-2050 (4)
4.4 out of 5 Customer Rating
Muffler Assembly Screws #E-2050 (4)
$7.49
Crankcase: 18CV-R Crankcase: 18CV-R
3.4 out of 5 Customer Rating
Crankcase: 18CV-R
$52.52
Cylinder Head: 21XM V2 Outboard Marine Cylinder Head: 21XM V2 Outboard Marine
4 out of 5 Customer Rating
Cylinder Head: 21XM V2 Outboard Marine
$91.34
Needle Assembly 21-120 Needle Assembly 21-120
5 out of 5 Customer Rating
Needle Assembly 21-120
$22.04
Screw Set CZ-M (8) Screw Set CZ-M (8)
3.6 out of 5 Customer Rating
Screw Set CZ-M (8)
$9.85
Crankshaft: 21XZ-M Inboard Marine Crankshaft: 21XZ-M Inboard Marine
5 out of 5 Customer Rating
Crankshaft: 21XZ-M Inboard Marine
$149.99
Prop Nut: 21XM Prop Nut: 21XM
3.9 out of 5 Customer Rating
Prop Nut: 21XM
$6.49
Arm Shaft Assembly: 21XM Arm Shaft Assembly: 21XM
3.9 out of 5 Customer Rating
Arm Shaft Assembly: 21XM
$13.75
Front Bearing: 11PS Front Bearing: 11PS
3.1 out of 5 Customer Rating
Front Bearing: 11PS
$22.04
Cylinder Rebuild Kit: O.S. SPEED R21 EURO Cylinder Rebuild Kit: O.S. SPEED R21 EURO
4.7 out of 5 Customer Rating
Cylinder Rebuild Kit: O.S. SPEED R21 EURO
$251.47
Low Unit Screw (4): 21XM Low Unit Screw (4): 21XM
3.6 out of 5 Customer Rating
Low Unit Screw (4): 21XM
$10.86
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