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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1,729-1,758 of 1,758 Results
Silencer Body: F6040, GF40 Silencer Body: F6040, GF40
3.6 out of 5 Customer Rating
Silencer Body: F6040, GF40
$26.22 Price reduced from $87.39 to
Clearance Sale! ⓘ
Muffler Body F-4050: FS-62V Muffler Body F-4050: FS-62V
3.2 out of 5 Customer Rating
Muffler Body F-4050: FS-62V
$14.52 Price reduced from $48.43 to
Clearance Sale! ⓘ
Cylinder/Piston/Rod: Speed T1202 Cylinder/Piston/Rod: Speed T1202
5 out of 5 Customer Rating
Cylinder/Piston/Rod: Speed T1202
$176.79
Drive Washer: 65LA Drive Washer: 65LA
3.3 out of 5 Customer Rating
Drive Washer: 65LA
$12.99
O-Ring Rubber Gasket: 120AX O-Ring Rubber Gasket: 120AX
5 out of 5 Customer Rating
O-Ring Rubber Gasket: 120AX
$3.28 Price reduced from $10.94 to
Clearance Sale! ⓘ
Piston Ring: FS-95V Piston Ring: FS-95V
5 out of 5 Customer Rating
Piston Ring: FS-95V
$10.42 Price reduced from $34.76 to
Clearance Sale! ⓘ
Crankcase: 55HZ Hyper Crankcase: 55HZ Hyper
4.8 out of 5 Customer Rating
Crankcase: 55HZ Hyper
$21.17 Price reduced from $70.56 to
Clearance Sale! ⓘ
Crankshaft: 21VZ-R Crankshaft: 21VZ-R
4 out of 5 Customer Rating
Crankshaft: 21VZ-R
$109.99
Dust Cap Set, 18mm (3) Dust Cap Set, 18mm (3)
3.2 out of 5 Customer Rating
Dust Cap Set, 18mm (3)
$3.57 Price reduced from $11.91 to
Clearance Sale! ⓘ
Rocker Cover: GF40 Rocker Cover: GF40
3.9 out of 5 Customer Rating
Rocker Cover: GF40
$6.35 Price reduced from $21.17 to
Clearance Sale! ⓘ
T-2080SC II Tuned Silencer Complete Set T-2080SC II Tuned Silencer Complete Set
4.4 out of 5 Customer Rating
T-2080SC II Tuned Silencer Complete Set
$81.26 Price reduced from $270.89 to
Clearance Sale! ⓘ
Cover Plate: 21XZ-B Speed Cover Plate: 21XZ-B Speed
5 out of 5 Customer Rating
Cover Plate: 21XZ-B Speed
$7.63 Price reduced from $25.44 to
Clearance Sale! ⓘ
Drive Washer: GF40 Drive Washer: GF40
4.8 out of 5 Customer Rating
Drive Washer: GF40
$12.63 Price reduced from $42.11 to
Clearance Sale! ⓘ
Cylinder & Piston Assembly: O.S. Speed R2104 Cylinder & Piston Assembly: O.S. Speed R2104
3.3 out of 5 Customer Rating
Cylinder & Piston Assembly: O.S. Speed R2104
$72.91 Price reduced from $243.06 to
Clearance Sale! ⓘ
Valve Assembly Exhaust: FS-120 Surpass Valve Assembly Exhaust: FS-120 Surpass
5 out of 5 Customer Rating
Valve Assembly Exhaust: FS-120 Surpass
$13.23 Price reduced from $44.10 to
Clearance Sale! ⓘ
Pilot Shaft: GT60 Pilot Shaft: GT60
5 out of 5 Customer Rating
Pilot Shaft: GT60
$5.97 Price reduced from $19.90 to
Clearance Sale! ⓘ
Exhaust Header Pipe Assembly F5040: FS110A Exhaust Header Pipe Assembly F5040: FS110A
3.6 out of 5 Customer Rating
Exhaust Header Pipe Assembly F5040: FS110A
$6.01 Price reduced from $20.05 to
Clearance Sale! ⓘ
Valve Spring Retainer: 120Surpass Valve Spring Retainer: 120Surpass
3.7 out of 5 Customer Rating
Valve Spring Retainer: 120Surpass
$2.55 Price reduced from $8.49 to
Clearance Sale! ⓘ
Intake Manifold: FS72 Alpha Intake Manifold: FS72 Alpha
5 out of 5 Customer Rating
Intake Manifold: FS72 Alpha
$7.26 Price reduced from $24.23 to
Clearance Sale! ⓘ
Thermo Insulator: GT15 Thermo Insulator: GT15
4.5 out of 5 Customer Rating
Thermo Insulator: GT15
$4.13 Price reduced from $13.78 to
Clearance Sale! ⓘ
Carburetor #21K: 35AX Carburetor #21K: 35AX
4.5 out of 5 Customer Rating
Carburetor #21K: 35AX
$87.29
Cylinder Assembly Rebuild Kit: 21XZ-R VII Cylinder Assembly Rebuild Kit: 21XZ-R VII
4.8 out of 5 Customer Rating
Cylinder Assembly Rebuild Kit: 21XZ-R VII
$82.83 Price reduced from $276.13 to
Clearance Sale! ⓘ
Dust Cap Set, 7mm (3) Dust Cap Set, 7mm (3)
5 out of 5 Customer Rating
Dust Cap Set, 7mm (3)
$2.96 Price reduced from $9.85 to
Clearance Sale! ⓘ
Mixture Control Screw #9B Mixture Control Screw #9B
4 out of 5 Customer Rating
Mixture Control Screw #9B
$13.83
Rocker Cover: 56 FS Rocker Cover: 56 FS
3.6 out of 5 Customer Rating
Rocker Cover: 56 FS
$17.16
Muffler Power Box: 120AX Muffler Power Box: 120AX
5 out of 5 Customer Rating
Muffler Power Box: 120AX
$21.46 Price reduced from $71.53 to
Clearance Sale! ⓘ
Connecting Rod: 35AX Connecting Rod: 35AX
3.6 out of 5 Customer Rating
Connecting Rod: 35AX
$6.61 Price reduced from $22.04 to
Clearance Sale! ⓘ
Cylinder Piston Rod Rebuild Kit: R2103 Speed Cylinder Piston Rod Rebuild Kit: R2103 Speed
5 out of 5 Customer Rating
Cylinder Piston Rod Rebuild Kit: R2103 Speed
$76.08 Price reduced from $253.61 to
Clearance Sale! ⓘ
Carburetor Retainer: 12CV Carburetor Retainer: 12CV
4.8 out of 5 Customer Rating
Carburetor Retainer: 12CV
$11.87
Crankshft Ball Bearing, Rear: 12TZ Spec II Crankshft Ball Bearing, Rear: 12TZ Spec II
5 out of 5 Customer Rating
Crankshft Ball Bearing, Rear: 12TZ Spec II
$68.45
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