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 1,755 Results
Mid Needle Valve Assebly: 61ER, 941HZ-R Mid Needle Valve Assebly: 61ER, 941HZ-R
3.6 out of 5 Customer Rating
Mid Needle Valve Assebly: 61ER, 941HZ-R
$22.30
Rear Housing: GT60 Rear Housing: GT60
4.4 out of 5 Customer Rating
Rear Housing: GT60
$87.18
Rocker Cover: 120 Surpass Rocker Cover: 120 Surpass
4.4 out of 5 Customer Rating
Rocker Cover: 120 Surpass
$14.73
Throttle Lever #2F #2FB Throttle Lever #2F #2FB
4.8 out of 5 Customer Rating
Throttle Lever #2F #2FB
$7.49
Thermo Insulator 21J3 Thermo Insulator 21J3
4.6 out of 5 Customer Rating
Thermo Insulator 21J3
$19.14
Inner Head O-Ring O.S. T1204 (S30-FKM) Inner Head O-Ring O.S. T1204 (S30-FKM)
5 out of 5 Customer Rating
Inner Head O-Ring O.S. T1204 (S30-FKM)
$9.89
Carburetor Reducer, 6.5mm: OS Speed B21 Pink Rhonda Drake Edition Carburetor Reducer, 6.5mm: OS Speed B21 Pink Rhonda Drake Edition
5 out of 5 Customer Rating
Carburetor Reducer, 6.5mm: OS Speed B21 Pink Rhonda Drake Edition
$22.11
Crankcase: R21 Crankcase: R21
4 out of 5 Customer Rating
Crankcase: R21
$136.57
Crankshaft: 28XZ Crankshaft: 28XZ
4 out of 5 Customer Rating
Crankshaft: 28XZ
$131.09
Carburetor Reducer 8mm, Blue Carburetor Reducer 8mm, Blue
4.2 out of 5 Customer Rating
Carburetor Reducer 8mm, Blue
$6.33 Price reduced from $21.10 to
Clearance Sale! ⓘ
M1006SC Manifold M1006SC Manifold
3.6 out of 5 Customer Rating
M1006SC Manifold
$21.48 Price reduced from $71.60 to
Clearance Sale! ⓘ
O.S. Pistion Pin: .12XZ O.S. Pistion Pin: .12XZ
4.8 out of 5 Customer Rating
O.S. Pistion Pin: .12XZ
$8.99
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
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
Locknut Set: FT, FR5 Locknut Set: FT, FR5
4.1 out of 5 Customer Rating
Locknut Set: FT, FR5
$41.12
Cam Cover: 56 FS Cam Cover: 56 FS
4.5 out of 5 Customer Rating
Cam Cover: 56 FS
$11.91
Camshaft Bearing: F 120-300 Camshaft Bearing: F 120-300
4.5 out of 5 Customer Rating
Camshaft Bearing: F 120-300
$22.37
Gasket Set: FS-91-P Gasket Set: FS-91-P
5 out of 5 Customer Rating
Gasket Set: FS-91-P
$10.94
Needle Adj Screw New: #60B Needle Adj Screw New: #60B
3.3 out of 5 Customer Rating
Needle Adj Screw New: #60B
$7.57
Piston Pin Retainer: 40PS Piston Pin Retainer: 40PS
5 out of 5 Customer Rating
Piston Pin Retainer: 40PS
$6.49
Prop Washer 10-12 Prop Washer 10-12
5 out of 5 Customer Rating
Prop Washer 10-12
$6.49
Pushrod: FS-62V Pushrod: FS-62V
5 out of 5 Customer Rating
Pushrod: FS-62V
$11.99
Needle Assembly Screw: 65LA Needle Assembly Screw: 65LA
5 out of 5 Customer Rating
Needle Assembly Screw: 65LA
$6.49
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