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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1,221-1,244 of 1,605 Results
Exhaust Pipe Assembly: FS81 Alpha Exhaust Pipe Assembly: FS81 Alpha
4.7 out of 5 Customer Rating
Exhaust Pipe Assembly: FS81 Alpha
$19.14
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
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
E3071 Muffler E3071 Muffler
3.3 out of 5 Customer Rating
E3071 Muffler
$34.82
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
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
Rocker Cover Gasket: 200 Surpass Rocker Cover Gasket: 200 Surpass
5 out of 5 Customer Rating
Rocker Cover Gasket: 200 Surpass
$6.49
Drive Washer: 120AX Drive Washer: 120AX
5 out of 5 Customer Rating
Drive Washer: 120AX
$8.19 Price reduced from $27.29 to
Clearance Sale! ⓘ
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
Cover Plate Assembly: GGT10 Cover Plate Assembly: GGT10
5 out of 5 Customer Rating
Cover Plate Assembly: GGT10
$16.39 Price reduced from $54.63 to
Clearance Sale! ⓘ
Cylinder Liner: 37SZ-H Cylinder Liner: 37SZ-H
3.3 out of 5 Customer Rating
Cylinder Liner: 37SZ-H
$38.67
Crankshaft: FS72 Alpha Crankshaft: FS72 Alpha
3.7 out of 5 Customer Rating
Crankshaft: FS72 Alpha
$74.90
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
Piston/Sleeve/Rod set: O.S. SPEED R2106 Piston/Sleeve/Rod set: O.S. SPEED R2106
4.5 out of 5 Customer Rating
Piston/Sleeve/Rod set: O.S. SPEED R2106
$279.99
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
Pump Unit PD-08: FS-200S-P Pump Unit PD-08: FS-200S-P
5 out of 5 Customer Rating
Pump Unit PD-08: FS-200S-P
$87.29
Camshaft Bearing: F 40-120 Camshaft Bearing: F 40-120
3.1 out of 5 Customer Rating
Camshaft Bearing: F 40-120
$17.16
Carburetor Body: #10H Carburetor Body: #10H
4.5 out of 5 Customer Rating
Carburetor Body: #10H
$13.99
Carburetor Body: 40L, 55HZ Hyper Carburetor Body: 40L, 55HZ Hyper
4.1 out of 5 Customer Rating
Carburetor Body: 40L, 55HZ Hyper
$23.00 Price reduced from $76.68 to
Clearance Sale! ⓘ
Connecting Rod: 21VF/SE Connecting Rod: 21VF/SE
4.1 out of 5 Customer Rating
Connecting Rod: 21VF/SE
$21.10
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