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  3. OS Engines

O.S. Engines

O.S. Engines

Quality and performance has made O.S. the standard in RC engines for over 80 years.

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22

193-288 of 1771 Results

    Outer Head: Speed 21 V-Spec

    Outer Head: Speed 21 V-Spec

    $139.99
    Mixture Control Valve #10A

    Mixture Control Valve #10A

    $13.67
    Metering Needle Assembly: 30VG

    Metering Needle Assembly: 30VG

    $19.14
    O.S. Metering Needle Assembly 22D Speed B2103

    O.S. Metering Needle Assembly 22D Speed B2103

    $19.14
    M10 In-Cowl Exhaust Header Pipe Inverted 80D: FS56A

    M10 In-Cowl Exhaust Header Pipe Inverted 80D: FS56A

    $36.85
    Booster Cable: Single

    Booster Cable: Single

    $21.04
    Carburetor Rotor: 61ER

    Carburetor Rotor: 61ER

    $45.99
    Carburetor Rotor: 61E New 91HZ

    Carburetor Rotor: 61E New 91HZ

    $48.32
    Spring Choke Friction: WLA-2, GT55

    Spring Choke Friction: WLA-2, GT55

    $5.99
    Ball Link #3 20K: 21VZ-R

    Ball Link #3 20K: 21VZ-R

    $17.16
    O.S. Ball Link #6 22D Carb Speed B2103 Type S

    O.S. Ball Link #6 22D Carb Speed B2103 Type S

    $17.16
    18TM Revo Manifold

    18TM Revo Manifold

    $52.77
    RP6 Turbo Glow Plug Medium On-Road

    RP6 Turbo Glow Plug Medium On-Road

    $14.99
    Carb Reducer 7.5mm, Blue

    Carb Reducer 7.5mm, Blue

    $20.99
    Crankcase: 12XZ Spec II Speed

    Crankcase: 12XZ Spec II Speed

    $69.99
    Crankshaft: 21XZ-B Spec 2

    Crankshaft: 21XZ-B Spec 2

    $210.21
    Cylinder & Piston Assembly: R2101 Speed

    Cylinder & Piston Assembly: R2101 Speed

    $177.63
    Inner Head: O.S. Speed R2104

    Inner Head: O.S. Speed R2104

    $76.71
    Inner Head: B2102 Speed

    Inner Head: B2102 Speed

    $52.69
    Idle Adj Valve STP #6H7L8H

    Idle Adj Valve STP #6H7L8H

    $6.49
    Needle Holder 21M: 21XZ-R

    Needle Holder 21M: 21XZ-R

    $16.09
    Metering Needle #11H #11HB

    Metering Needle #11H #11HB

    $16.09
    Meter Needle Assembly #12FB: 12XZ Speed

    Meter Needle Assembly #12FB: 12XZ Speed

    $17.99
    105HZ 1.05 Helicopter Engine
    5(1)

    105HZ 1.05 Helicopter Engine

    $649.99
    Carburetor Reducer 9mm, Red: Speed 21 V-Spec

    Carburetor Reducer 9mm, Red: Speed 21 V-Spec

    $21.10
    Rear Bearing: 12

    Rear Bearing: 12

    $21.17
    Cover Plate: 28XZ

    Cover Plate: 28XZ

    $22.26
    Crankcase: 19XZ-B Speed

    Crankcase: 19XZ-B Speed

    $157.70
    Crankshaft: 12TG-P

    Crankshaft: 12TG-P

    $50.83
    Crankshaft: 21 Speed V-Spec

    Crankshaft: 21 Speed V-Spec

    $174.99
    Inner Head: T1201 Speed

    Inner Head: T1201 Speed

    $37.99
    O.S. Outer Head Speed: T1203

    O.S. Outer Head Speed: T1203

    $89.99
    Heat Sink Head: 30VG

    Heat Sink Head: 30VG

    $91.34
    Inner Head: 12XZ Speed

    Inner Head: 12XZ Speed

    $30.99
    Pump Plate (PD-09) 2/3 Assembly: GF30 II

    Pump Plate (PD-09) 2/3 Assembly: GF30 II

    $71.58
    Pan Head Screw +3.0X12 (10)

    Pan Head Screw +3.0X12 (10)

    $9.53
    Carburetor Assemblyy Screw WLA-2: GT55

    Carburetor Assemblyy Screw WLA-2: GT55

    $5.99
    90 Degree In-Cowl Header: FS110A

    90 Degree In-Cowl Header: FS110A

    $36.85
    Intake Manifold 200 Surpass

    Intake Manifold 200 Surpass

    $34.86
    Front Bearing: 90-300

    Front Bearing: 90-300

    $22.16
    Camshaft: FS72 Alpha

    Camshaft: FS72 Alpha

    $54.63
    Connecting Rod: GF40

    Connecting Rod: GF40

    $70.40
    Back Plate: Sirius 7

    Back Plate: Sirius 7

    $466.21
    Crankcase: 65AX

    Crankcase: 65AX

    $114.52
    Crankcase: GT15

    Crankcase: GT15

    $125.03
    Crankpin Stop Screw: GT60

    Crankpin Stop Screw: GT60

    $11.80
    Cylinder & Piston: 25FX

    Cylinder & Piston: 25FX

    $40.73

    Clearance Sale!

    Cylinder Liner: GT55

    Cylinder Liner: GT55

    $44.33$118.99

    Clearance Sale!

    Cylinder Head: FS-91-P
    5(1)

    Cylinder Head: FS-91-P

    $81.94
    Collector Ring: FR7 Sirius 7

    Collector Ring: FR7 Sirius 7

    $346.62
    Cover Gasket: FS-70 Ultimate

    Cover Gasket: FS-70 Ultimate

    $11.91
    Gasket Set: FS-120 II
    5(1)

    Gasket Set: FS-120 II

    $10.94
    Silencer Body: 200 Surpass

    Silencer Body: 200 Surpass

    $87.21
    Case Gasket: GT60

    Case Gasket: GT60

    $7.46
    Muffler Body F-4050: FS-62V

    Muffler Body F-4050: FS-62V

    $48.43
    Pan Head Screw 3x18mm (10)

    Pan Head Screw 3x18mm (10)

    $11.91
    O-Ring IV PRC #6H Rubber

    O-Ring IV PRC #6H Rubber

    $6.49
    Piston Ring: 55HZ
    4.5(2)

    Piston Ring: 55HZ

    $26.24
    Piston: GT55

    Piston: GT55

    $72.99
    Piston Ring: 140RX

    Piston Ring: 140RX

    $32.56
    Piston Ring: FS-91 FT-160

    Piston Ring: FS-91 FT-160

    $26.24
    Throttle Lever Screw #10212A

    Throttle Lever Screw #10212A

    $6.49
    Stator Assembly: 3820-1200 .25

    Stator Assembly: 3820-1200 .25

    $45.99
    Air Funnel: 56FS

    Air Funnel: 56FS

    $17.08
    Carburetor #20M: 37SZ-H

    Carburetor #20M: 37SZ-H

    $87.21
    Carburetor: GT15HZ

    Carburetor: GT15HZ

    $190.20
    Muffler Extension: #842
    3(2)

    Muffler Extension: #842

    $11.72
    Piston Ring: 70SZ-H

    Piston Ring: 70SZ-H

    $26.24
    Radial Mount Standoffs: Sirius 7

    Radial Mount Standoffs: Sirius 7

    $9.44
    Powerboost Pipe: GT15HZ

    Powerboost Pipe: GT15HZ

    $281.62
    Cam Cover Screws: FS-70 Ultimate (2)
    1(1)

    Cam Cover Screws: FS-70 Ultimate (2)

    $7.46
    Carburetor Body: 70T, GF30

    Carburetor Body: 70T, GF30

    $97.90
    Carburetor Rotor: #60M

    Carburetor Rotor: #60M

    $34.99
    70T Carburetor: GF30 Gasoline Engine

    70T Carburetor: GF30 Gasoline Engine

    $174.34
    Carburetor Retaining Screws: 2.6x18mm (10)
    5(1)

    Carburetor Retaining Screws: 2.6x18mm (10)

    $9.85
    Connecting Rod: 56 FS

    Connecting Rod: 56 FS

    $22.04
    Connecting Rod: 12Z CV

    Connecting Rod: 12Z CV

    $17.01
    Connecting Rod: 91SX-H Complete

    Connecting Rod: 91SX-H Complete

    $27.48
    Cover Plate Gasket: 75AX
    5(1)

    Cover Plate Gasket: 75AX

    $6.49
    Pushrod Cover O-Ring: 56 FS

    Pushrod Cover O-Ring: 56 FS

    $6.49
    Cover Plate: 55AX

    Cover Plate: 55AX

    $17.16
    Crankcase: FS110A

    Crankcase: FS110A

    $119.86
    Cylinder & Piston Assembly: 75AX

    Cylinder & Piston Assembly: 75AX

    $138.19
    Drive Gear Screw: 240-300

    Drive Gear Screw: 240-300

    $6.49
    Drive Washer: 46AXII

    Drive Washer: 46AXII

    $13.83
    Drive Washer: FS72 Alpha

    Drive Washer: FS72 Alpha

    $19.05
    Gasket Set: 91FX

    Gasket Set: 91FX

    $8.43
    Needle Valve Assembly: 91SZ-H Hyper

    Needle Valve Assembly: 91SZ-H Hyper

    $29.60
    O-Ring Small #2K #2SB
    5(3)

    O-Ring Small #2K #2SB

    $6.49
    Piston: FS-95V

    Piston: FS-95V

    $48.43
    Piston: GGT10

    Piston: GGT10

    $52.58
    Piston Ring: 32FH

    Piston Ring: 32FH

    $26.24
    Screw Set (12): FS-40 Surpass

    Screw Set (12): FS-40 Surpass

    $9.44
    Valve Collet: FS-120 Surpass

    Valve Collet: FS-120 Surpass

    $10.86
    Venturi: 55HZ, 105HZ
    5(1)

    Venturi: 55HZ, 105HZ

    $22.04
    Intake Manifold: GF40

    Intake Manifold: GF40

    $21.17

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