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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601-624 of 1,755 Results
Front Bearing: 21XZ-B Front Bearing: 21XZ-B
5 out of 5 Customer Rating
Front Bearing: 21XZ-B
$30.44
Cover Plate: R21 Cover Plate: R21
4 out of 5 Customer Rating
Cover Plate: R21
$6.61 Price reduced from $22.04 to
Clearance Sale! ⓘ
M2003SC 70mm Manifold, Top Speed, On-Road M2003SC 70mm Manifold, Top Speed, On-Road
5 out of 5 Customer Rating
M2003SC 70mm Manifold, Top Speed, On-Road
$67.39
Crankshaft: 21XR-B Version II Crankshaft: 21XR-B Version II
4.8 out of 5 Customer Rating
Crankshaft: 21XR-B Version II
$62.78
Cylinder & Piston Assembly: 12TG Cylinder & Piston Assembly: 12TG
4.8 out of 5 Customer Rating
Cylinder & Piston Assembly: 12TG
$78.15
Locknut Nozzle #2BK Locknut Nozzle #2BK
5 out of 5 Customer Rating
Locknut Nozzle #2BK
$2.59 Price reduced from $8.66 to
Clearance Sale! ⓘ
Carburetor #70D: 120AX Carburetor #70D: 120AX
3.3 out of 5 Customer Rating
Carburetor #70D: 120AX
$102.08
Intake Manifold Gasket 200 Surpass Intake Manifold Gasket 200 Surpass
5 out of 5 Customer Rating
Intake Manifold Gasket 200 Surpass
$7.46
Camshaft: FS-40, 48 Surpass Camshaft: FS-40, 48 Surpass
3.7 out of 5 Customer Rating
Camshaft: FS-40, 48 Surpass
$41.94
Connecting Rod: 95AX Connecting Rod: 95AX
3.7 out of 5 Customer Rating
Connecting Rod: 95AX
$29.60
Crankcase: 120 Surpass Crankcase: 120 Surpass
3.7 out of 5 Customer Rating
Crankcase: 120 Surpass
$162.87
Crankshaft: FS-95V Crankshaft: FS-95V
3.9 out of 5 Customer Rating
Crankshaft: FS-95V
$102.45
Drive Hub: 35AX Drive Hub: 35AX
4.1 out of 5 Customer Rating
Drive Hub: 35AX
$13.83
Silencer Assembly Screw: 56 FS Silencer Assembly Screw: 56 FS
4.7 out of 5 Customer Rating
Silencer Assembly Screw: 56 FS
$8.43
Mufler Body F6020: FS155A-P Mufler Body F6020: FS155A-P
3.9 out of 5 Customer Rating
Mufler Body F6020: FS155A-P
$70.40
Muffler Assembly Screw #843 #892 Muffler Assembly Screw #843 #892
3.3 out of 5 Customer Rating
Muffler Assembly Screw #843 #892
$8.43
Spring Needle Adjust WLA-2: GT55 Spring Needle Adjust WLA-2: GT55
5 out of 5 Customer Rating
Spring Needle Adjust WLA-2: GT55
$10.99
Rocker Cover Gasket: 200 Surpass Rocker Cover Gasket: 200 Surpass
5 out of 5 Customer Rating
Rocker Cover Gasket: 200 Surpass
$6.49
Crankshaft: O.S. FS-64V Crankshaft: O.S. FS-64V
4.7 out of 5 Customer Rating
Crankshaft: O.S. FS-64V
$66.99
Woodruff Key: 30Wankel Woodruff Key: 30Wankel
3.9 out of 5 Customer Rating
Woodruff Key: 30Wankel
$6.49
Main Shaft: 3820-960 Main Shaft: 3820-960
3.5 out of 5 Customer Rating
Main Shaft: 3820-960
$8.99
Cylinder Liner 91HZ-R Speed 3D Cylinder Liner 91HZ-R Speed 3D
3.3 out of 5 Customer Rating
Cylinder Liner 91HZ-R Speed 3D
$121.99
Slide Valve 2 (21M) Slide Valve 2 (21M)
5 out of 5 Customer Rating
Slide Valve 2 (21M)
$32.99
Heatsink Head 55HZ.HZ-R Heatsink Head 55HZ.HZ-R
4.7 out of 5 Customer Rating
Heatsink Head 55HZ.HZ-R
$138.99
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