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 1,812 Results
O.S. Pistion Pin: .12XZ O.S. Pistion Pin: .12XZ
4.8 out of 5 Customer Rating
O.S. Pistion Pin: .12XZ
$8.99
Crankshaft: 21XZ-R Crankshaft: 21XZ-R
4.2 out of 5 Customer Rating
Crankshaft: 21XZ-R
$144.99
Crankshaft: 21XZ-B Speed Crankshaft: 21XZ-B Speed
5 out of 5 Customer Rating
Crankshaft: 21XZ-B Speed
$174.99
S. Cylinder & Piston Assembly: 12XZ Speed Spec 3 S. Cylinder & Piston Assembly: 12XZ Speed Spec 3
5 out of 5 Customer Rating
S. Cylinder & Piston Assembly: 12XZ Speed Spec 3
$127.39
Cylinder & Piston Assembly: 21TM Cylinder & Piston Assembly: 21TM
5 out of 5 Customer Rating
Cylinder & Piston Assembly: 21TM
$122.17
Inner Head: 12XZ Speed Spec 3 Inner Head: 12XZ Speed Spec 3
5 out of 5 Customer Rating
Inner Head: 12XZ Speed Spec 3
$31.99
Outer Head: Speed 21 V-Spec Outer Head: Speed 21 V-Spec
3.4 out of 5 Customer Rating
Outer Head: Speed 21 V-Spec
$139.99
Exhaust Gasket: 21RZ Exhaust Gasket: 21RZ
4.4 out of 5 Customer Rating
Exhaust Gasket: 21RZ
$13.78
Head Gasket: 30VG Head Gasket: 30VG
4.4 out of 5 Customer Rating
Head Gasket: 30VG
$7.46
Mixture Control Valve #10A Mixture Control Valve #10A
3.6 out of 5 Customer Rating
Mixture Control Valve #10A
$13.67
Mixture Control Valve 18TM Mixture Control Valve 18TM
4.4 out of 5 Customer Rating
Mixture Control Valve 18TM
$14.73
Metering Needle Assembly: 30VG Metering Needle Assembly: 30VG
5 out of 5 Customer Rating
Metering Needle Assembly: 30VG
$19.14
O.S. Metering Needle Assembly 22D Speed B2103 O.S. Metering Needle Assembly 22D Speed B2103
3.4 out of 5 Customer Rating
O.S. Metering Needle Assembly 22D Speed B2103
$19.14
Metering Needle Assembly 22C(B): Speed B2102 Metering Needle Assembly 22C(B): Speed B2102
5 out of 5 Customer Rating
Metering Needle Assembly 22C(B): Speed B2102
$19.14
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
Carburetor Reducer 7mm, Yellow: 21XZ-B Carburetor Reducer 7mm, Yellow: 21XZ-B
3.6 out of 5 Customer Rating
Carburetor Reducer 7mm, Yellow: 21XZ-B
$11.80
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
Cover Plate: 21XZ-B Speed Cover Plate: 21XZ-B Speed
5 out of 5 Customer Rating
Cover Plate: 21XZ-B Speed
$25.44
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
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