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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837-860 of 1,605 Results
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! ⓘ
Crankshaft: 18TM Crankshaft: 18TM
5 out of 5 Customer Rating
Crankshaft: 18TM
$55.14
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! ⓘ
Universal Nipple #12 Universal Nipple #12
5 out of 5 Customer Rating
Universal Nipple #12
$6.49
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
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! ⓘ
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
Drive Hub: 35AX Drive Hub: 35AX
4.1 out of 5 Customer Rating
Drive Hub: 35AX
$13.83
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
Intake Pipe Assembly: FS-120 SP Intake Pipe Assembly: FS-120 SP
3.3 out of 5 Customer Rating
Intake Pipe Assembly: FS-120 SP
$36.99
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
O-Ring Muffler Gasket F6020: FS155A-P O-Ring Muffler Gasket F6020: FS155A-P
5 out of 5 Customer Rating
O-Ring Muffler Gasket F6020: FS155A-P
$8.49
O-Ring Large: FS90IIS O-Ring Large: FS90IIS
4.1 out of 5 Customer Rating
O-Ring Large: FS90IIS
$6.49
Pushrod: GF30 Pushrod: GF30
4.1 out of 5 Customer Rating
Pushrod: GF30
$7.87 Price reduced from $26.24 to
Clearance Sale! ⓘ
Needle Assembly #7M #7L Needle Assembly #7M #7L
5 out of 5 Customer Rating
Needle Assembly #7M #7L
$22.04
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