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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313-336 of 1,755 Results
Crankshaft: 25XZ Crankshaft: 25XZ
3.4 out of 5 Customer Rating
Crankshaft: 25XZ
$114.99
Universal Nipple: #15, 21M Universal Nipple: #15, 21M
4.2 out of 5 Customer Rating
Universal Nipple: #15, 21M
$10.86
Crankcase: 21XZ-GT Speed Crankcase: 21XZ-GT Speed
5 out of 5 Customer Rating
Crankcase: 21XZ-GT Speed
$181.59
Exhaust Seal Ring (10) Exhaust Seal Ring (10)
5 out of 5 Customer Rating
Exhaust Seal Ring (10)
$33.61
Crankshaft O.S. Speed T1204 Crankshaft O.S. Speed T1204
4.6 out of 5 Customer Rating
Crankshaft O.S. Speed T1204
$126.49
Cylinder & Piston Set: O.S. Max .12 TG Version 4 Cylinder & Piston Set: O.S. Max .12 TG Version 4
5 out of 5 Customer Rating
Cylinder & Piston Set: O.S. Max .12 TG Version 4
$78.13
Carburetor 12D2: 12TG VII Carburetor 12D2: 12TG VII
5 out of 5 Customer Rating
Carburetor 12D2: 12TG VII
$135.44
Carburetor 22B: 21XR-B Carburetor 22B: 21XR-B
4.8 out of 5 Customer Rating
Carburetor 22B: 21XR-B
$119.78
Connecting Rod: 30VG Connecting Rod: 30VG
5 out of 5 Customer Rating
Connecting Rod: 30VG
$27.48
Cylinder/Piston/Rod: T1201 Speed Cylinder/Piston/Rod: T1201 Speed
5 out of 5 Customer Rating
Cylinder/Piston/Rod: T1201 Speed
$193.94
Dust Cap Set: 12-30 Class Dust Cap Set: 12-30 Class
3.6 out of 5 Customer Rating
Dust Cap Set: 12-30 Class
$9.85
Mixture Control Screw #11L Mixture Control Screw #11L
5 out of 5 Customer Rating
Mixture Control Screw #11L
$11.80
Slide Valve 12F2: 12XZ Speed Spec 3 Slide Valve 12F2: 12XZ Speed Spec 3
4 out of 5 Customer Rating
Slide Valve 12F2: 12XZ Speed Spec 3
$10.08 Price reduced from $33.61 to
Clearance Sale! ⓘ
Throttle Stop Screw 22C(B): Speed B2102 Throttle Stop Screw 22C(B): Speed B2102
3.6 out of 5 Customer Rating
Throttle Stop Screw 22C(B): Speed B2102
$11.87
Cylinder Head: 25LA Natural Cylinder Head: 25LA Natural
5 out of 5 Customer Rating
Cylinder Head: 25LA Natural
$17.08
Rear Bearing: FS-62V Rear Bearing: FS-62V
4.5 out of 5 Customer Rating
Rear Bearing: FS-62V
$25.19
Cam Cover: FS-120 Surpass Cam Cover: FS-120 Surpass
4.1 out of 5 Customer Rating
Cam Cover: FS-120 Surpass
$10.86
Carburetor Body: 61ER Carburetor Body: 61ER
5 out of 5 Customer Rating
Carburetor Body: 61ER
$97.88
Carburetor Rotor: 60PS, FS-95V Carburetor Rotor: 60PS, FS-95V
5 out of 5 Customer Rating
Carburetor Rotor: 60PS, FS-95V
$30.44
Cover Plate: FSa-72II Cover Plate: FSa-72II
5 out of 5 Customer Rating
Cover Plate: FSa-72II
$19.25
Crankshaft: 25FX Crankshaft: 25FX
5 out of 5 Customer Rating
Crankshaft: 25FX
$38.71
Cylinder Liner: GF30 Cylinder Liner: GF30
4.7 out of 5 Customer Rating
Cylinder Liner: GF30
$59.03
Drive Pin: FL-70 Drive Pin: FL-70
3.3 out of 5 Customer Rating
Drive Pin: FL-70
$6.49
Piston Ring: FS-120 III Piston Ring: FS-120 III
5 out of 5 Customer Rating
Piston Ring: FS-120 III
$32.56
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