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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529-552 of 1,605 Results
Cylinder Head: O.S. FS-64V Cylinder Head: O.S. FS-64V
5 out of 5 Customer Rating
Cylinder Head: O.S. FS-64V
$76.99
Valve Spring: FS155A-P Valve Spring: FS155A-P
4.4 out of 5 Customer Rating
Valve Spring: FS155A-P
$6.49
Valve Spring: F90 160 Valve Spring: F90 160
4.8 out of 5 Customer Rating
Valve Spring: F90 160
$6.49
Woodruff Key: 61S RFH Woodruff Key: 61S RFH
5 out of 5 Customer Rating
Woodruff Key: 61S RFH
$7.46
Inner Head: R2102 Speed Inner Head: R2102 Speed
4 out of 5 Customer Rating
Inner Head: R2102 Speed
$51.64
Mixture Control Screw #10ER Mixture Control Screw #10ER
5 out of 5 Customer Rating
Mixture Control Screw #10ER
$9.85
Crankshaft: 12XZ Speed Crankshaft: 12XZ Speed
4.4 out of 5 Customer Rating
Crankshaft: 12XZ Speed
$94.99
Crankshaft: T1202 Speed Crankshaft: T1202 Speed
4.8 out of 5 Customer Rating
Crankshaft: T1202 Speed
$37.63 Price reduced from $125.42 to
Clearance Sale! ⓘ
O.S. Crankshaft OS Speed R21GT O.S. Crankshaft OS Speed R21GT
4.8 out of 5 Customer Rating
O.S. Crankshaft OS Speed R21GT
$238.82
Outer Head: B21 Speed Adam Drake Outer Head: B21 Speed Adam Drake
4.4 out of 5 Customer Rating
Outer Head: B21 Speed Adam Drake
$108.03
Inner Head: 21XZ-B Inner Head: 21XZ-B
3.4 out of 5 Customer Rating
Inner Head: 21XZ-B
$52.99
202 Super Air Cleaner 202 Super Air Cleaner
4 out of 5 Customer Rating
202 Super Air Cleaner
$22.26
Carburetor Reducer 6.5mm: Speed 21 V-SpecII Carburetor Reducer 6.5mm: Speed 21 V-SpecII
4.4 out of 5 Customer Rating
Carburetor Reducer 6.5mm: Speed 21 V-SpecII
$20.05
Speed P4 Gold Super Hot Plug Speed P4 Gold Super Hot Plug
3.6 out of 5 Customer Rating
Speed P4 Gold Super Hot Plug
$16.99
Outter Head: O.S.SPEED R21GT2 Outter Head: O.S.SPEED R21GT2
5 out of 5 Customer Rating
Outter Head: O.S.SPEED R21GT2
$133.99
Inner Head: T1202 Speed Inner Head: T1202 Speed
5 out of 5 Customer Rating
Inner Head: T1202 Speed
$37.99
Outer Head: 21XZ-R Speed Outer Head: 21XZ-R Speed
5 out of 5 Customer Rating
Outer Head: 21XZ-R Speed
$102.35
Dust Cap Set, 16mm (3) Dust Cap Set, 16mm (3)
5 out of 5 Customer Rating
Dust Cap Set, 16mm (3)
$11.91
Needle Assembly #10E Needle Assembly #10E
5 out of 5 Customer Rating
Needle Assembly #10E
$25.44
O-Ring Small #2K IFN O-Ring Small #2K IFN
5 out of 5 Customer Rating
O-Ring Small #2K IFN
$6.49
Throttle Lever #11K Throttle Lever #11K
4 out of 5 Customer Rating
Throttle Lever #11K
$16.09
Needle Metering 21M: 21XZ-R VII Needle Metering 21M: 21XZ-R VII
5 out of 5 Customer Rating
Needle Metering 21M: 21XZ-R VII
$17.99
O.S. Carburetor 22E (B) Without Reducer Type R O.S. Carburetor 22E (B) Without Reducer Type R
4.2 out of 5 Customer Rating
O.S. Carburetor 22E (B) Without Reducer Type R
$162.83
M2000SC 75mm Exhaust Manifold M2000SC 75mm Exhaust Manifold
3.4 out of 5 Customer Rating
M2000SC 75mm Exhaust Manifold
$63.18
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