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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1,568-1,591 of 1,808 Results
Cylinder Rebuild Kit: 21XZ-B Speed Spec III Cylinder Rebuild Kit: 21XZ-B Speed Spec III
4.7 out of 5 Customer Rating
Cylinder Rebuild Kit: 21XZ-B Speed Spec III
$221.55
Cylinder Rebuild Kit: 21XR-B Cylinder Rebuild Kit: 21XR-B
4.1 out of 5 Customer Rating
Cylinder Rebuild Kit: 21XR-B
$149.93
Cylinder & Piston: 21XZ-GT Speed Cylinder & Piston: 21XZ-GT Speed
4.1 out of 5 Customer Rating
Cylinder & Piston: 21XZ-GT Speed
$177.63
O.S. Inner Head with O-Ring Speed B2103 Type R & S O.S. Inner Head with O-Ring Speed B2103 Type R & S
5 out of 5 Customer Rating
O.S. Inner Head with O-Ring Speed B2103 Type R & S
$57.75
Needle Holder #20E Needle Holder #20E
3.7 out of 5 Customer Rating
Needle Holder #20E
$16.09
Metering Needle Assembly: 21VG Metering Needle Assembly: 21VG
3.9 out of 5 Customer Rating
Metering Needle Assembly: 21VG
$16.99
Start Shaft: 18CV-RX Start Shaft: 18CV-RX
4.7 out of 5 Customer Rating
Start Shaft: 18CV-RX
$19.14
Valve Spring: FS-26S-C Valve Spring: FS-26S-C
4.1 out of 5 Customer Rating
Valve Spring: FS-26S-C
$6.49
Carburetor 40L: 55HZ Hyper Carburetor 40L: 55HZ Hyper
4 out of 5 Customer Rating
Carburetor 40L: 55HZ Hyper
$152.36
Carburetor 61R: FS81 Alpha Pump Carburetor 61R: FS81 Alpha Pump
4 out of 5 Customer Rating
Carburetor 61R: FS81 Alpha Pump
$141.93
Exhaust Adapter: FS-120S Exhaust Adapter: FS-120S
5 out of 5 Customer Rating
Exhaust Adapter: FS-120S
$9.99
Heat Sink Head: 55HZ Hyper Heat Sink Head: 55HZ Hyper
4.8 out of 5 Customer Rating
Heat Sink Head: 55HZ Hyper
$125.47
Breather Nipple: FS-20, 40 Breather Nipple: FS-20, 40
3.4 out of 5 Customer Rating
Breather Nipple: FS-20, 40
$6.49
Cam Cover: FS-120 III Cam Cover: FS-120 III
3.4 out of 5 Customer Rating
Cam Cover: FS-120 III
$10.86
Cam Follower: FS-61, 48 Surpass Cam Follower: FS-61, 48 Surpass
3.8 out of 5 Customer Rating
Cam Follower: FS-61, 48 Surpass
$17.08
Carburetor Body: #40G Carburetor Body: #40G
4.8 out of 5 Customer Rating
Carburetor Body: #40G
$29.49
Carburetor Body: 70R, FS155A-P Carburetor Body: 70R, FS155A-P
5 out of 5 Customer Rating
Carburetor Body: 70R, FS155A-P
$97.81
Carburetor Body: #60M Carburetor Body: #60M
3.4 out of 5 Customer Rating
Carburetor Body: #60M
$71.43
Connecting Rod: 20-28 Connecting Rod: 20-28
4.8 out of 5 Customer Rating
Connecting Rod: 20-28
$19.05
Cover Plate: GGT10 Cover Plate: GGT10
3.4 out of 5 Customer Rating
Cover Plate: GGT10
$22.26
Crankcase: 55HZ Hyper Crankcase: 55HZ Hyper
4.8 out of 5 Customer Rating
Crankcase: 55HZ Hyper
$70.56
Crankcase: 37SZ-H Crankcase: 37SZ-H
5 out of 5 Customer Rating
Crankcase: 37SZ-H
$52.69
Cylinder Head: 56 FS Cylinder Head: 56 FS
5 out of 5 Customer Rating
Cylinder Head: 56 FS
$63.20
Cylinder Jacket: FT-160 Cylinder Jacket: FT-160
4 out of 5 Customer Rating
Cylinder Jacket: FT-160
$70.37
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