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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1,197-1,220 of 1,605 Results
Crankshaft: 18TM Crankshaft: 18TM
5 out of 5 Customer Rating
Crankshaft: 18TM
$55.14
Crankshaft: Speed B2102 Crankshaft: Speed B2102
5 out of 5 Customer Rating
Crankshaft: Speed B2102
$193.70
Cylinder & Piston: 21XZ-B Cylinder & Piston: 21XZ-B
4.4 out of 5 Customer Rating
Cylinder & Piston: 21XZ-B
$165.99
Outer Head: B2102 Speed Outer Head: B2102 Speed
3.6 out of 5 Customer Rating
Outer Head: B2102 Speed
$102.52
Carburetor 61G: 91HZ-R Speed 3D 3C Carburetor 61G: 91HZ-R Speed 3D 3C
5 out of 5 Customer Rating
Carburetor 61G: 91HZ-R Speed 3D 3C
$303.60
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
Carburetor Body: 22B2, 21XZ-B Ver2 Carburetor Body: 22B2, 21XZ-B Ver2
5 out of 5 Customer Rating
Carburetor Body: 22B2, 21XZ-B Ver2
$23.99 Price reduced from $79.99 to
Clearance Sale! ⓘ
Crankshaft: 21XR-B Version II Crankshaft: 21XR-B Version II
4.8 out of 5 Customer Rating
Crankshaft: 21XR-B Version II
$18.83 Price reduced from $62.78 to
Clearance Sale! ⓘ
Outer Head: R2101 Speed Outer Head: R2101 Speed
3.4 out of 5 Customer Rating
Outer Head: R2101 Speed
$102.35
Universal Nipple #12 Universal Nipple #12
5 out of 5 Customer Rating
Universal Nipple #12
$6.49
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! ⓘ
Rear Adapter Fixing Screws (10): 21TM Rear Adapter Fixing Screws (10): 21TM
5 out of 5 Customer Rating
Rear Adapter Fixing Screws (10): 21TM
$7.46
Connecting Rod O.S. Speed R21 Connecting Rod O.S. Speed R21
4.1 out of 5 Customer Rating
Connecting Rod O.S. Speed R21
$59.99
Motor Mount: 140RX, FS120, 120AX, FS200S Motor Mount: 140RX, FS120, 120AX, FS200S
3.3 out of 5 Customer Rating
Motor Mount: 140RX, FS120, 120AX, FS200S
$77.99
Spinner Nut: 10FP, FSR Spinner Nut: 10FP, FSR
4.1 out of 5 Customer Rating
Spinner Nut: 10FP, FSR
$9.49
Rear Bearing: GT55 Rear Bearing: GT55
3.7 out of 5 Customer Rating
Rear Bearing: GT55
$6.29 Price reduced from $20.99 to
Clearance Sale! ⓘ
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
Control Arm: #9B Control Arm: #9B
4.5 out of 5 Customer Rating
Control Arm: #9B
$14.73
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 Shaft Spacer: Sirius 7 Drive Shaft Spacer: Sirius 7
4.7 out of 5 Customer Rating
Drive Shaft Spacer: Sirius 7
$2.80 Price reduced from $9.44 to
Clearance Sale! ⓘ
Drive Washer: FS-48 Surpass Drive Washer: FS-48 Surpass
5 out of 5 Customer Rating
Drive Washer: FS-48 Surpass
$13.75
Exhaust Pipe Assembly: FS81 Alpha Exhaust Pipe Assembly: FS81 Alpha
4.7 out of 5 Customer Rating
Exhaust Pipe Assembly: FS81 Alpha
$19.14
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