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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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26

193-288 of 1812 Results

    Built-Up Parts Set (C&P) O.S. Speed T1204

    Built-Up Parts Set (C&P) O.S. Speed T1204

    $171.28
    Inner Head: O.S.SPEED R21GT2

    Inner Head: O.S.SPEED R21GT2

    $57.99
    Cylinder & Piston: 21XZ-B Speed

    Cylinder & Piston: 21XZ-B Speed

    $193.68
    Crankshaft: O.S. Speed B2104

    Crankshaft: O.S. Speed B2104

    $237.99
    O.S. Cover Plate Speed: T1203

    O.S. Cover Plate Speed: T1203

    $17.99
    Cylinder Rebuild Kit: 21XZ-B Speed Spec III

    Cylinder Rebuild Kit: 21XZ-B Speed Spec III

    $221.55
    Cylinder Rebuild Kit: 21XR-B

    Cylinder Rebuild Kit: 21XR-B

    $149.93
    Needle Holder #20E

    Needle Holder #20E

    $16.09
    Cylinder Head: 91SX-H Complete

    Cylinder Head: 91SX-H Complete

    $99.99
    Crankcase Plug: GT55

    Crankcase Plug: GT55

    $17.16
    Cylinder Head: GT15HZ

    Cylinder Head: GT15HZ

    $108.03
    Cylinder Liner: 50SX-H

    Cylinder Liner: 50SX-H

    $58.90
    Cylinder Liner: FT-300

    Cylinder Liner: FT-300

    $59.99
    Drive Washer: 25LA-S

    Drive Washer: 25LA-S

    $6.49
    Universal Nipple: #15, 21M

    Universal Nipple: #15, 21M

    $10.86
    Crankshaft: 21XZ-R Speed

    Crankshaft: 21XZ-R Speed

    $194.99
    Exhaust Seal Ring (10)

    Exhaust Seal Ring (10)

    $33.61
    Carburetor Reed Valve Gasket: GT22

    Carburetor Reed Valve Gasket: GT22

    $10.94
    Camshaft Bearing: F 120-300

    Camshaft Bearing: F 120-300

    $22.37
    Cylinder & Piston: 65AX
    4(2)

    Cylinder & Piston: 65AX

    $138.26
    Gasket Set: FS-91-P
    5(1)

    Gasket Set: FS-91-P

    $10.94
    Gasket Carb IP: #10, FR5

    Gasket Carb IP: #10, FR5

    $6.49
    Piston Pin Retainer: 40PS

    Piston Pin Retainer: 40PS

    $6.49
    Piston Pin: FS-120

    Piston Pin: FS-120

    $14.73
    Main Shaft Stopper SET: OMA-50

    Main Shaft Stopper SET: OMA-50

    $7.99
    Cover Plate: 15CV-A

    Cover Plate: 15CV-A

    $10.99
    Drive Washer: GT55

    Drive Washer: GT55

    $52.69
    O-Ring Small: 120Surpass

    O-Ring Small: 120Surpass

    $6.49
    Piston Pin: FS-91 Surpass
    5(1)

    Piston Pin: FS-91 Surpass

    $10.86
    Sensor Fixing Screw: GT33

    Sensor Fixing Screw: GT33

    $7.46
    Screw Set (8): 10LA (8)
    4(1)

    Screw Set (8): 10LA (8)

    $8.49
    Valve Throttle WLA-2: GT55

    Valve Throttle WLA-2: GT55

    $15.76
    Silencer Set: F6040, GF40

    Silencer Set: F6040, GF40

    $97.82
    Breather Nipple: 120-300

    Breather Nipple: 120-300

    $6.49
    Camshaft Gear: FR5-300

    Camshaft Gear: FR5-300

    $44.13
    Carburetor Body: 75AX

    Carburetor Body: 75AX

    $48.51
    Connecting Rod: FS-95V

    Connecting Rod: FS-95V

    $30.44
    Built-up Parts Set for Cylinder & Piston: O.S. Speed R2104

    Built-up Parts Set for Cylinder & Piston: O.S. Speed R2104

    $309.38
    Heat Sink Head: 18CV-R

    Heat Sink Head: 18CV-R

    $91.50
    Outer Head: O.S. Speed B2104

    Outer Head: O.S. Speed B2104

    $103.41
    O.S. Carburetor Complete 22E(B)GT w o Reducer

    O.S. Carburetor Complete 22E(B)GT w o Reducer

    $205.96
    Crankshaft: FS-52

    Crankshaft: FS-52

    $47.99
    Crankshaft: GT60

    Crankshaft: GT60

    $193.79
    Head Gasket: 25LA

    Head Gasket: 25LA

    $6.49
    Silencer Assembly Screws: #F-6010 FS-200S

    Silencer Assembly Screws: #F-6010 FS-200S

    $9.85
    Prop Shaft: OMA-38 Series

    Prop Shaft: OMA-38 Series

    $27.99
    Carburetor Rotor 70T2: GF30 II

    Carburetor Rotor 70T2: GF30 II

    $63.12
    Carburetor Rotor: 56 FS

    Carburetor Rotor: 56 FS

    $29.60
    Piston Pin Retainer: 61RX SX

    Piston Pin Retainer: 61RX SX

    $6.45
    Rocker Cover: 120 Surpass

    Rocker Cover: 120 Surpass

    $14.73
    Rocker Cover: FF-240 320

    Rocker Cover: FF-240 320

    $22.24
    Rotor Stop Holder #2K 74

    Rotor Stop Holder #2K 74

    $7.46
    Cap Screw 5x25mm (10): GT55

    Cap Screw 5x25mm (10): GT55

    $13.78
    Rear Bearing: 108-160
    4(1)

    Rear Bearing: 108-160

    $26.34
    Cover Plate: 56 FS

    Cover Plate: 56 FS

    $15.76
    Back Plate Parallel Pin: Sirius 7

    Back Plate Parallel Pin: Sirius 7

    $6.49
    Cylinder Liner: 140RX

    Cylinder Liner: 140RX

    $106.01
    Drive Spacer: GT33

    Drive Spacer: GT33

    $44.22
    Drive Hub: 140RX

    Drive Hub: 140RX

    $26.24
    Carburetor Spacer: Sirius 7

    Carburetor Spacer: Sirius 7

    $10.86
    Link Pin: Sirius 7

    Link Pin: Sirius 7

    $11.80
    Muffler Screws #871 (2)

    Muffler Screws #871 (2)

    $6.49
    Tappet Adjusting Screw: 200 Surpass

    Tappet Adjusting Screw: 200 Surpass

    $9.85
    Gasket Set: 32SX-H

    Gasket Set: 32SX-H

    $7.46
    Thermo Insulator: GT15

    Thermo Insulator: GT15

    $13.78
    Idle Needle: WLA-2 GT55

    Idle Needle: WLA-2 GT55

    $15.76
    Needle Valve Assembly 61H: GT15

    Needle Valve Assembly 61H: GT15

    $22.04
    Needle A IFNVA

    Needle A IFNVA

    $11.80
    Piston: 95AX

    Piston: 95AX

    $48.41
    Piston: FS-120

    Piston: FS-120

    $51.47
    Piston Ring: FS155A-P

    Piston Ring: FS155A-P

    $38.03
    Piston Ring: GT60

    Piston Ring: GT60

    $30.44
    Thrust Washer 10-15

    Thrust Washer 10-15

    $6.49
    Valve Exhaust: FS-52 Surpass

    Valve Exhaust: FS-52 Surpass

    $19.14
    Air Funnel #60RA: FS81 Alpha

    Air Funnel #60RA: FS81 Alpha

    $19.14
    Exhaust Header Assembly: 56 FS

    Exhaust Header Assembly: 56 FS

    $13.78
    Carburetor Rotor: #40D

    Carburetor Rotor: #40D

    $11.80
    Piston Pin: 56 FS

    Piston Pin: 56 FS

    $11.91
    55HZ-R Conversion Set: 55HZ, 50SX

    55HZ-R Conversion Set: 55HZ, 50SX

    $271.02
    Universal Nipple: #21, T1202 Speed

    Universal Nipple: #21, T1202 Speed

    $11.95
    Screw Set (8): 18TZ-TX
    4(1)

    Screw Set (8): 18TZ-TX

    $9.85
    Cylinder Liner: 70SZ-H

    Cylinder Liner: 70SZ-H

    $99.65
    Drive Washer: 15LA

    Drive Washer: 15LA

    $6.49
    Gasket Head: 65AX

    Gasket Head: 65AX

    $6.49
    Gasket Carburetor: #60B

    Gasket Carburetor: #60B

    $6.49
    Intake Pipe AS-L: FT-120 and FT-160

    Intake Pipe AS-L: FT-120 and FT-160

    $22.30
    Muffler Screws #843 (2)

    Muffler Screws #843 (2)

    $6.49
    Crankshaft: GT22

    Crankshaft: GT22

    $125.57
    Cylinder Head: Sirius 7

    Cylinder Head: Sirius 7

    $97.71
    Cylinder Liner: GT15HZ

    Cylinder Liner: GT15HZ

    $105.05
    Drive Washer: 160FX

    Drive Washer: 160FX

    $27.29
    Head Gasket .4 Aluminum: Sirius 7

    Head Gasket .4 Aluminum: Sirius 7

    $6.49
    90 Degree Muffler Extension Screws (2): 120AX

    90 Degree Muffler Extension Screws (2): 120AX

    $6.49
    Pushrod Cover: FS-62V

    Pushrod Cover: FS-62V

    $14.84
    Propeller Shaft Set: 3805 3810

    Propeller Shaft Set: 3805 3810

    $27.99
    O.S. Cover Plate Speed B2103 Type R & Type S

    O.S. Cover Plate Speed B2103 Type R & Type S

    $25.40

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