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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846-893 of 1,758 Results
Drive Washer: 12CV Drive Washer: 12CV
4.1 out of 5 Customer Rating
Drive Washer: 12CV
$6.49
Cover Plate: 65LA Cover Plate: 65LA
4.2 out of 5 Customer Rating
Cover Plate: 65LA
$10.99
Crankshaft: 18TZ-TX Crankshaft: 18TZ-TX
3.3 out of 5 Customer Rating
Crankshaft: 18TZ-TX
$60.65
Screw Set 21-32 (10) Screw Set 21-32 (10)
3.6 out of 5 Customer Rating
Screw Set 21-32 (10)
$9.85
Silencer Set: F6040, GF40 Silencer Set: F6040, GF40
5 out of 5 Customer Rating
Silencer Set: F6040, GF40
$97.82
M2004SC 85mm Manifold M2004SC 85mm Manifold
4.8 out of 5 Customer Rating
M2004SC 85mm Manifold
$65.28
Cylinder Liner: GGT10 Cylinder Liner: GGT10
5 out of 5 Customer Rating
Cylinder Liner: GGT10
$64.22
Needle Valve Assembly: #61B, 91HZ Needle Valve Assembly: #61B, 91HZ
4.1 out of 5 Customer Rating
Needle Valve Assembly: #61B, 91HZ
$22.30
Needle Ext Cable: FR5 300 Needle Ext Cable: FR5 300
4.1 out of 5 Customer Rating
Needle Ext Cable: FR5 300
$8.49
Cylinder Liner: FR5 Cylinder Liner: FR5
4 out of 5 Customer Rating
Cylinder Liner: FR5
$15.79 Price reduced from $45.22 to
Clearance Sale! ⓘ
Piston Pin: 200 Surpass Piston Pin: 200 Surpass
4.4 out of 5 Customer Rating
Piston Pin: 200 Surpass
$19.22
Carburetor Rotor: #61B, 91HZ Carburetor Rotor: #61B, 91HZ
3.6 out of 5 Customer Rating
Carburetor Rotor: #61B, 91HZ
$13.19 Price reduced from $43.99 to
Clearance Sale! ⓘ
Regulator Seat: 61E-R Regulator Seat: 61E-R
4.1 out of 5 Customer Rating
Regulator Seat: 61E-R
$3.56 Price reduced from $11.87 to
Clearance Sale! ⓘ
Crankcase: GT15 Crankcase: GT15
5 out of 5 Customer Rating
Crankcase: GT15
$37.51 Price reduced from $125.03 to
Clearance Sale! ⓘ
Piston: GT33 Piston: GT33
3.2 out of 5 Customer Rating
Piston: GT33
$68.27
Slide Valve Stop Screw #21J Slide Valve Stop Screw #21J
5 out of 5 Customer Rating
Slide Valve Stop Screw #21J
$3.56 Price reduced from $11.87 to
Clearance Sale! ⓘ
Manifold Nut M9 Manifold Nut M9
3.6 out of 5 Customer Rating
Manifold Nut M9
$6.49
Crankcase: 21XZ-B Speed Spec II Crankcase: 21XZ-B Speed Spec II
4.1 out of 5 Customer Rating
Crankcase: 21XZ-B Speed Spec II
$157.70
Screw Set (12): FS-120 Surpass Screw Set (12): FS-120 Surpass
4.7 out of 5 Customer Rating
Screw Set (12): FS-120 Surpass
$17.08
O.S. Crankshaft OS Speed R21GT O.S. Crankshaft OS Speed R21GT
4.8 out of 5 Customer Rating
O.S. Crankshaft OS Speed R21GT
$238.82
Cover Plate: 55AX Cover Plate: 55AX
3.4 out of 5 Customer Rating
Cover Plate: 55AX
$17.16
T-1070SC L52 Pipe Set T-1070SC L52 Pipe Set
4.4 out of 5 Customer Rating
T-1070SC L52 Pipe Set
$190.29
Piston: FS72 Alpha Piston: FS72 Alpha
5 out of 5 Customer Rating
Piston: FS72 Alpha
$12.63 Price reduced from $42.11 to
Clearance Sale! ⓘ
Cylinder Liner: 50SX-H Cylinder Liner: 50SX-H
4.8 out of 5 Customer Rating
Cylinder Liner: 50SX-H
$37.47
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! ⓘ
Piston Ring: FS30S Piston Ring: FS30S
3.9 out of 5 Customer Rating
Piston Ring: FS30S
$7.87 Price reduced from $26.24 to
Clearance Sale! ⓘ
Carburetor Body: 61T, FS-62V Carburetor Body: 61T, FS-62V
4.1 out of 5 Customer Rating
Carburetor Body: 61T, FS-62V
$11.68 Price reduced from $38.95 to
Clearance Sale! ⓘ
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
Slide Valve 12D: 18TM Slide Valve 12D: 18TM
5 out of 5 Customer Rating
Slide Valve 12D: 18TM
$9.77 Price reduced from $32.56 to
Clearance Sale! ⓘ
Connecting Rod: 21VF/SE Connecting Rod: 21VF/SE
4.1 out of 5 Customer Rating
Connecting Rod: 21VF/SE
$21.10
Crankshaft O.S.Speed B21 Adam Drake II Crankshaft O.S.Speed B21 Adam Drake II
5 out of 5 Customer Rating
Crankshaft O.S.Speed B21 Adam Drake II
$193.59
O-Ring Small #2K IFN O-Ring Small #2K IFN
5 out of 5 Customer Rating
O-Ring Small #2K IFN
$6.49
Thrust Washer: FT-120 160 Thrust Washer: FT-120 160
5 out of 5 Customer Rating
Thrust Washer: FT-120 160
$6.49
O-Ring Large: FS90IIS O-Ring Large: FS90IIS
4.1 out of 5 Customer Rating
O-Ring Large: FS90IIS
$6.49
Motor Mount: OMA-28 Series Motor Mount: OMA-28 Series
3.9 out of 5 Customer Rating
Motor Mount: OMA-28 Series
$8.99
Gasket Set: 46AX Gasket Set: 46AX
3.1 out of 5 Customer Rating
Gasket Set: 46AX
$11.80
Ignition Module IG-05: GT15HZ Ignition Module IG-05: GT15HZ
4.4 out of 5 Customer Rating
Ignition Module IG-05: GT15HZ
$119.78
Gasket Head, .1mm: 105HZ Gasket Head, .1mm: 105HZ
5 out of 5 Customer Rating
Gasket Head, .1mm: 105HZ
$7.46
Metering Needle #11H #11HB Metering Needle #11H #11HB
4.7 out of 5 Customer Rating
Metering Needle #11H #11HB
$4.83 Price reduced from $16.09 to
Clearance Sale! ⓘ
Thrust Washer: 20-40FP Thrust Washer: 20-40FP
5 out of 5 Customer Rating
Thrust Washer: 20-40FP
$7.99
Cylinder Liner: 95AX Cylinder Liner: 95AX
4.1 out of 5 Customer Rating
Cylinder Liner: 95AX
$88.92
Carburetor Reducer 6.5mm: Speed 21 V-SpecII Carburetor Reducer 6.5mm: Speed 21 V-SpecII
4.4 out of 5 Customer Rating
Carburetor Reducer 6.5mm: Speed 21 V-SpecII
$20.05
Stator Assembly: 5025-375 .50 Stator Assembly: 5025-375 .50
4.7 out of 5 Customer Rating
Stator Assembly: 5025-375 .50
$27.90 Price reduced from $92.99 to
Clearance Sale! ⓘ
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! ⓘ
80 Degree Exhaust Header: 155FS-a 80 Degree Exhaust Header: 155FS-a
5 out of 5 Customer Rating
80 Degree Exhaust Header: 155FS-a
$48.43
Needle Holder #7H #7M #7L Needle Holder #7H #7M #7L
4.1 out of 5 Customer Rating
Needle Holder #7H #7M #7L
$11.80
Prop Washer: 20-40 Prop Washer: 20-40
5 out of 5 Customer Rating
Prop Washer: 20-40
$6.49
Speed P4 Gold Super Hot Plug Speed P4 Gold Super Hot Plug
3.6 out of 5 Customer Rating
Speed P4 Gold Super Hot Plug
$16.99
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