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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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267

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35

$500 or more

22

1249-1344 of 1771 Results

    M16 In-Cowl Exhaust Header Pipe Invrtd 80D: FS200S

    M16 In-Cowl Exhaust Header Pipe Invrtd 80D: FS200S

    $44.22
    Intake Manifold Assembly A: IL-300 Dia Star

    Intake Manifold Assembly A: IL-300 Dia Star

    $36.85
    Center Manifold: IL-300 Dia Star

    Center Manifold: IL-300 Dia Star

    $48.44
    Front Bearing: GT55

    Front Bearing: GT55

    $30.44
    Idle Gear: IL-300 Dia Star

    Idle Gear: IL-300 Dia Star

    $29.47
    Carburetor Body: #61B, 91HZ

    Carburetor Body: #61B, 91HZ

    $75.99
    Carburetor Retainer: 61RX, SX

    Carburetor Retainer: 61RX, SX

    $12.99
    Carburetor Retainer: 55HZ Hyper

    Carburetor Retainer: 55HZ Hyper

    $11.70
    Connecting Rod: 200 Surpass

    Connecting Rod: 200 Surpass

    $48.51
    Rear Cover Plate: GT33

    Rear Cover Plate: GT33

    $34.76
    Cover Plate: 55HZ Hyper

    Cover Plate: 55HZ Hyper

    $11.72
    Cylinder & Piston: 25LA

    Cylinder & Piston: 25LA

    $35.48
    Drive Washer: 21-25

    Drive Washer: 21-25

    $11.80
    Drive Washer: GF30

    Drive Washer: GF30

    $38.03
    Exhaust Cam: Sirius 7

    Exhaust Cam: Sirius 7

    $70.37
    Gasket Set: BGX 3500

    Gasket Set: BGX 3500

    $10.94
    Cover Gasket: 200 Surpass

    Cover Gasket: 200 Surpass

    $6.49
    Gasket Carburetor: FS-120

    Gasket Carburetor: FS-120

    $6.49
    Ignition Module IG-04: GF40

    Ignition Module IG-04: GF40

    $119.78
    Intake Manifold: FS155A-P

    Intake Manifold: FS155A-P

    $38.03
    Intake Pipe AS-R: FT-120 160

    Intake Pipe AS-R: FT-120 160

    $22.30
    Mixture Control Valve: 61ER

    Mixture Control Valve: 61ER

    $29.49
    Exhaust Header Pipe Assembly: 200 Surpass

    Exhaust Header Pipe Assembly: 200 Surpass

    $22.26
    Exhaust Header Pipe Assembly F-4050: FS-62V

    Exhaust Header Pipe Assembly F-4050: FS-62V

    $14.84
    Muffler Extension Screws 120AX (2)
    5(1)

    Muffler Extension Screws 120AX (2)

    $6.49
    O-Ring P3-FKM 61H: GT15

    O-Ring P3-FKM 61H: GT15

    $10.94
    Piston: FS155A-P

    Piston: FS155A-P

    $57.96
    Rocker Arm: FS95V

    Rocker Arm: FS95V

    $28.45
    Rocker Arm Shaft: Sirius 7

    Rocker Arm Shaft: Sirius 7

    $9.44
    Throttle Lever #2CK

    Throttle Lever #2CK

    $6.49
    Allen Head Screws M3.5x12 (10)

    Allen Head Screws M3.5x12 (10)

    $9.85
    Intake Valve: 56 FS

    Intake Valve: 56 FS

    $19.05
    Valve Spring: 20-300

    Valve Spring: 20-300

    $6.49
    Prop Shaft: OMA-50 Series

    Prop Shaft: OMA-50 Series

    $34.99
    Cover Plate with BPS-1 Mount: 55HZ-R

    Cover Plate with BPS-1 Mount: 55HZ-R

    $11.72
    Crankcase: FS155A-P

    Crankcase: FS155A-P

    $174.52
    Crankshaft: 56 FS

    Crankshaft: 56 FS

    $60.65
    Crankshaft: FS-62V

    Crankshaft: FS-62V

    $66.17
    Crankshaft: GF40

    Crankshaft: GF40

    $193.59
    Cylinder Jacket: Sirius 7

    Cylinder Jacket: Sirius 7

    $97.71
    Cylinder Head: FSa-72II

    Cylinder Head: FSa-72II

    $98.83
    Cylinder Liner: 61SX WX

    Cylinder Liner: 61SX WX

    $80.99
    Carburetor Gasket: GT60

    Carburetor Gasket: GT60

    $10.94
    Master Connecting Rod Assembly: Sirius 7

    Master Connecting Rod Assembly: Sirius 7

    $87.29
    Piston: 91HZ

    Piston: 91HZ

    $91.99
    Pilot Shaft: GT55

    Pilot Shaft: GT55

    $29.56
    Piston Ring: 108FSR
    5(1)

    Piston Ring: 108FSR

    $29.60
    Pushrod Cover: FS-95V

    Pushrod Cover: FS-95V

    $17.16
    Rocker Arm Assembly: 120 300

    Rocker Arm Assembly: 120 300

    $32.56
    Rocker Arm: FS-40-48S

    Rocker Arm: FS-40-48S

    $25.44
    Standoff 5x12.7mm 1/2" (4): GT55

    Standoff 5x12.7mm 1/2" (4): GT55

    $29.49
    Complete Carburetor Assembly: (61T2) O.S. FS-64V

    Complete Carburetor Assembly: (61T2) O.S. FS-64V

    $153.99
    Valve Intake: FS-91 Surpass

    Valve Intake: FS-91 Surpass

    $34.86
    Valve Spring: 56 FS

    Valve Spring: 56 FS

    $6.49
    Bearing L-1050ZZ

    Bearing L-1050ZZ

    $17.99
    Main Shaft: 3805-1200

    Main Shaft: 3805-1200

    $8.99
    Propeller Shaft Set: 3815-1000

    Propeller Shaft Set: 3815-1000

    $30.99
    80 Degree Exhaust Header: 155FS-a

    80 Degree Exhaust Header: 155FS-a

    $48.43
    Carburetor Body: #60LH, 50SX-H

    Carburetor Body: #60LH, 50SX-H

    $48.41
    Carburetor Reducer 6.5mm, Blue Aluminum

    Carburetor Reducer 6.5mm, Blue Aluminum

    $21.10
    Carburetor Body: 21J2(B), 21XZ-B Speed

    Carburetor Body: 21J2(B), 21XZ-B Speed

    $89.99
    Crankcase: Speed R2101

    Crankcase: Speed R2101

    $141.93
    Crankcase: 21XZ-B Speed Spec II

    Crankcase: 21XZ-B Speed Spec II

    $157.70
    O.S. Cylinder and Piston Assy Speed B2103 Type R

    O.S. Cylinder and Piston Assy Speed B2103 Type R

    $193.68
    Gasket Head, .2 Aluminum: 21XZ-R

    Gasket Head, .2 Aluminum: 21XZ-R

    $6.49
    Mixture Control Screw #10M

    Mixture Control Screw #10M

    $11.80
    O.S. Metering Needle (21M) R21GT

    O.S. Metering Needle (21M) R21GT

    $17.01
    O-Ring Metal Valve: 120Surpass

    O-Ring Metal Valve: 120Surpass

    $6.49
    202 Elements (4)

    202 Elements (4)

    $13.78
    Carburetor 12F2-B: 12XZ Speed Spec 3

    Carburetor 12F2-B: 12XZ Speed Spec 3

    $118.99
    7.0mm Carb Reducer (Red): AL2 O.S.SPEED R21GT2

    7.0mm Carb Reducer (Red): AL2 O.S.SPEED R21GT2

    $21.99
    O.S. Carburetor Body 22D (B) Speed B2103 Type S

    O.S. Carburetor Body 22D (B) Speed B2103 Type S

    $87.19
    Carburetor Rotor: #2A

    Carburetor Rotor: #2A

    $11.72
    O.S. Crankcase OS Speed R21GT

    O.S. Crankcase OS Speed R21GT

    $185.04
    Outer Head: T1202 Speed

    Outer Head: T1202 Speed

    $102.46
    Outer Head: 12XZ Speed Spec II

    Outer Head: 12XZ Speed Spec II

    $79.99
    Metering Needle Assembly 21M2(B) Speed: R2101

    Metering Needle Assembly 21M2(B) Speed: R2101

    $19.14
    Dust Cover: #2BK
    5(2)

    Dust Cover: #2BK

    $10.86
    Gasket Set: 12TZ

    Gasket Set: 12TZ

    $10.94
    Head Gasket: 0.1, 0.15, T1201 Speed

    Head Gasket: 0.1, 0.15, T1201 Speed

    $9.55
    Head Gasket: 15CV

    Head Gasket: 15CV

    $6.49
    Needle Valve Assembly #10J #10M

    Needle Valve Assembly #10J #10M

    $26.24
    Mixture Control Valve 21M

    Mixture Control Valve 21M

    $19.05
    Throttle Stop Screw 18TM

    Throttle Stop Screw 18TM

    $10.58
    Speed Ball Driver Replacement Tip 2.5

    Speed Ball Driver Replacement Tip 2.5

    $18.53
    Carburetor 21J4 (B) B21 Adam Drake II without Reducer

    Carburetor 21J4 (B) B21 Adam Drake II without Reducer

    $119.76
    M2002SC 80mm Manifold: 21XZ-B, 21VZ-B, 25XZ, 30VG

    M2002SC 80mm Manifold: 21XZ-B, 21VZ-B, 25XZ, 30VG

    $67.39
    M2004SC 85mm Manifold

    M2004SC 85mm Manifold

    $65.28
    T-2060SC WN Tuned Pipe Complete Set

    T-2060SC WN Tuned Pipe Complete Set

    $152.36
    Crankshft Ball Bearing, Rear: 12TZ Spec II

    Crankshft Ball Bearing, Rear: 12TZ Spec II

    $68.45
    Cover Plate: R21

    Cover Plate: R21

    $22.04
    Crankshaft: 18TM

    Crankshaft: 18TM

    $55.14
    Cylinder & Piston: 21XZ-B

    Cylinder & Piston: 21XZ-B

    $165.99
    Outer Head: B2102 Speed

    Outer Head: B2102 Speed

    $102.52
    O.S. Outer Head Speed B2103 Type R & Type S

    O.S. Outer Head Speed B2103 Type R & Type S

    $102.47
    Carburetor 61G: 91HZ-R Speed 3D 3C

    Carburetor 61G: 91HZ-R Speed 3D 3C

    $303.60

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