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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1,533-1,556 of 1,605 Results
Rotor Stop #3A #2A Rotor Stop #3A #2A
5 out of 5 Customer Rating
$6.49
Main Shaft: 5020-490 .40 Main Shaft: 5020-490 .40
4.1 out of 5 Customer Rating
$10.99
Pushrod: FR5 Pushrod: FR5
5 out of 5 Customer Rating
$3.26 Price reduced from $10.86 to
Clearance Sale!
Carburetor Body: 61T, FS-62V Carburetor Body: 61T, FS-62V
4.1 out of 5 Customer Rating
$11.68 Price reduced from $38.95 to
Clearance Sale!
Cylinder Rebuild Kit: 21XR-B Cylinder Rebuild Kit: 21XR-B
4.1 out of 5 Customer Rating
$44.98 Price reduced from $149.93 to
Clearance Sale!
Cylinder Head: 91SX-H Complete Cylinder Head: 91SX-H Complete
4.4 out of 5 Customer Rating
$30.00 Price reduced from $99.99 to
Clearance Sale!
Connecting Rod: BGX-3500 Connecting Rod: BGX-3500
3.2 out of 5 Customer Rating
$43.99
Needle Holder: 65LA Needle Holder: 65LA
4 out of 5 Customer Rating
$11.80
Rocker Cover: FT-160 Rocker Cover: FT-160
4.1 out of 5 Customer Rating
$6.61 Price reduced from $22.04 to
Clearance Sale!
M16 In-Cowl Exhaust Header Pipe Side 60D: FS20S M16 In-Cowl Exhaust Header Pipe Side 60D: FS20S
5 out of 5 Customer Rating
$14.55 Price reduced from $48.51 to
Clearance Sale!
Cam Cover: FS-62V Cam Cover: FS-62V
4.5 out of 5 Customer Rating
$3.57 Price reduced from $11.91 to
Clearance Sale!
Carburetor Body: 61C, 95AX Carburetor Body: 61C, 95AX
5 out of 5 Customer Rating
$14.55 Price reduced from $48.51 to
Clearance Sale!
Connecting Rod: GT15HZ Connecting Rod: GT15HZ
3.1 out of 5 Customer Rating
$17.33 Price reduced from $57.77 to
Clearance Sale!
Cover Plate: 21VG-P Cover Plate: 21VG-P
3.7 out of 5 Customer Rating
$13.78
Outerhead: 21XR-B Version II Outerhead: 21XR-B Version II
3.3 out of 5 Customer Rating
$24.09 Price reduced from $80.29 to
Clearance Sale!
Cylinder Liner: 91FX Cylinder Liner: 91FX
4.8 out of 5 Customer Rating
$26.68 Price reduced from $88.92 to
Clearance Sale!
Screw Set (8): 25LA Screw Set (8): 25LA
3.2 out of 5 Customer Rating
$8.43
Cover Plate: FS-120E Cover Plate: FS-120E
3.4 out of 5 Customer Rating
$6.33 Price reduced from $21.10 to
Clearance Sale!
Crankshaft: GT33 Crankshaft: GT33
4 out of 5 Customer Rating
$37.64 Price reduced from $125.47 to
Clearance Sale!
Rocker Arm Support Assembly FS91-240 Rocker Arm Support Assembly FS91-240
5 out of 5 Customer Rating
$8.87 Price reduced from $29.55 to
Clearance Sale!
Outer Head: O.S. Speed B21 Pink Rhonda Drake Edition Outer Head: O.S. Speed B21 Pink Rhonda Drake Edition
4.6 out of 5 Customer Rating
$33.38 Price reduced from $111.25 to
Clearance Sale!
Carburetor #21E Slide: 30VG Series Carburetor #21E Slide: 30VG Series
5 out of 5 Customer Rating
$119.86
Cylinder Piston Assembly: R21 Cylinder Piston Assembly: R21
4.4 out of 5 Customer Rating
$39.83 Price reduced from $132.77 to
Clearance Sale!
Cylinder Rebuild Kit: 21XZ-GT Speed Cylinder Rebuild Kit: 21XZ-GT Speed
4.4 out of 5 Customer Rating
$66.47 Price reduced from $221.55 to
Clearance Sale!