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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1,321-1,344 of 1,605 Results
Carburetor 61H: GT15 Carburetor 61H: GT15
3.7 out of 5 Customer Rating
Carburetor 61H: GT15
$147.01
Front Crankshaft Bearing: Speed T1202 Front Crankshaft Bearing: Speed T1202
5 out of 5 Customer Rating
Front Crankshaft Bearing: Speed T1202
$22.04
Crankshaft: 50SX-H Crankshaft: 50SX-H
4.1 out of 5 Customer Rating
Crankshaft: 50SX-H
$55.12
90 Degree Muffler Extension: 120AX 90 Degree Muffler Extension: 120AX
4.3 out of 5 Customer Rating
90 Degree Muffler Extension: 120AX
$34.86
Outer Head: 12XZ Speed Spec II Outer Head: 12XZ Speed Spec II
5 out of 5 Customer Rating
Outer Head: 12XZ Speed Spec II
$79.99
Muffler Extension: 120AX Muffler Extension: 120AX
3.2 out of 5 Customer Rating
Muffler Extension: 120AX
$26.24
Drive Washer: GT15HZ Drive Washer: GT15HZ
3.3 out of 5 Customer Rating
Drive Washer: GT15HZ
$48.51
Gasket Carburetor: FS-120 Gasket Carburetor: FS-120
4.5 out of 5 Customer Rating
Gasket Carburetor: FS-120
$6.49
Cover Plate with BPS-1 Mount: 55HZ-R Cover Plate with BPS-1 Mount: 55HZ-R
5 out of 5 Customer Rating
Cover Plate with BPS-1 Mount: 55HZ-R
$11.72
Crankcase: GGT10 Crankcase: GGT10
4.1 out of 5 Customer Rating
Crankcase: GGT10
$104.09
Crankcase: FT-160 Crankcase: FT-160
5 out of 5 Customer Rating
Crankcase: FT-160
$174.34
Connecting Rod: 30VG Connecting Rod: 30VG
5 out of 5 Customer Rating
Connecting Rod: 30VG
$27.48
Cylinder Liner: FS72 Alpha Cylinder Liner: FS72 Alpha
3.3 out of 5 Customer Rating
Cylinder Liner: FS72 Alpha
$43.02
Pump Plate 1 (PD-09): GF30 II Pump Plate 1 (PD-09): GF30 II
5 out of 5 Customer Rating
Pump Plate 1 (PD-09): GF30 II
$44.30
Muffler Screws #871 (2) Muffler Screws #871 (2)
4.7 out of 5 Customer Rating
Muffler Screws #871 (2)
$6.49
Cap Screw 5x50mm (10): GT55 Cap Screw 5x50mm (10): GT55
5 out of 5 Customer Rating
Cap Screw 5x50mm (10): GT55
$13.78
Cover Plate: 200 Surpass Cover Plate: 200 Surpass
5 out of 5 Customer Rating
Cover Plate: 200 Surpass
$22.30
Rotor Guide Screw #10A Rotor Guide Screw #10A
4.4 out of 5 Customer Rating
Rotor Guide Screw #10A
$2.59 Price reduced from $8.66 to
Clearance Sale! ⓘ
Muffler Screws 20-46 (2) Muffler Screws 20-46 (2)
3.2 out of 5 Customer Rating
Muffler Screws 20-46 (2)
$6.49
Outer Head O.S. Speed R2106 Outer Head O.S. Speed R2106
3.7 out of 5 Customer Rating
Outer Head O.S. Speed R2106
$124.99
Valve Collet: FS-120 Surpass Valve Collet: FS-120 Surpass
5 out of 5 Customer Rating
Valve Collet: FS-120 Surpass
$10.86
Head Gasket: FF-320 Head Gasket: FF-320
4.4 out of 5 Customer Rating
Head Gasket: FF-320
$4.20 Price reduced from $6.49 to
Clearance Sale! ⓘ
Carburetor Gasket: 200 Surpass Carburetor Gasket: 200 Surpass
4.1 out of 5 Customer Rating
Carburetor Gasket: 200 Surpass
$7.46
Back Plate Gasket O-Ring: FL70 Back Plate Gasket O-Ring: FL70
3.3 out of 5 Customer Rating
Back Plate Gasket O-Ring: FL70
$6.49
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