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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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289-384 of 1773 Results

    Inner Head With O-Ring: O.S. Speed B2104

    Inner Head With O-Ring: O.S. Speed B2104

    $59.01
    FILTER OIL 20ML INS

    FILTER OIL 20ML INS

    $15.99
    T-2080SC Silencer: 21XZ-R, 21VG

    T-2080SC Silencer: 21XZ-R, 21VG

    $184.82
    Carburetor Body: 21M(B), 21XZ-R Speed

    Carburetor Body: 21M(B), 21XZ-R Speed

    $97.81
    Carburetor Washe:r #20A, B

    Carburetor Washe:r #20A, B

    $6.49
    Crankshaft: R2103 Speed

    Crankshaft: R2103 Speed

    $215.83
    Crankshaft: 25XZ

    Crankshaft: 25XZ

    $114.99
    Universal Nipple: #15, 21M

    Universal Nipple: #15, 21M

    $10.86
    Crankcase: 21XZ-GT Speed

    Crankcase: 21XZ-GT Speed

    $181.59
    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
    Remote Needle Bracket: 160FX

    Remote Needle Bracket: 160FX

    $7.46
    Intake Manifold: GF40

    Intake Manifold: GF40

    $21.17
    Rear Bearing: FS-61

    Rear Bearing: FS-61

    $26.34
    Cam Follower: 91-300

    Cam Follower: 91-300

    $22.04
    Camshaft: FS-120 II

    Camshaft: FS-120 II

    $66.15
    Camshaft: GF40

    Camshaft: GF40

    $80.47
    Carburetor Body: #60F

    Carburetor Body: #60F

    $37.80
    Carburetor Rotor: 40K, 46AXII

    Carburetor Rotor: 40K, 46AXII

    $33.61
    Connecting Rod: 32SX-H

    Connecting Rod: 32SX-H

    $21.10
    Connecting Rod: 40-46

    Connecting Rod: 40-46

    $22.04
    Cover Plate: GT55

    Cover Plate: GT55

    $41.99
    Crankcase: GT33

    Crankcase: GT33

    $97.81
    Cylinder Head: .25AX

    Cylinder Head: .25AX

    $19.99
    Cylinder Liner: 70SZ-H

    Cylinder Liner: 70SZ-H

    $99.65
    Drive Washer: 75AX

    Drive Washer: 75AX

    $13.78
    Drive Washer: 15LA

    Drive Washer: 15LA

    $6.49
    Gasket Set: 37SZ-H

    Gasket Set: 37SZ-H

    $10.94
    Gasket Set: 140RX

    Gasket Set: 140RX

    $8.43
    Gasket Carburetor: #60B

    Gasket Carburetor: #60B

    $6.49
    Gasket Head: 65AX

    Gasket Head: 65AX

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

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

    $22.30
    Silencer Body: 56 FS

    Silencer Body: 56 FS

    $44.22
    Muffler Screws #843 (2)

    Muffler Screws #843 (2)

    $6.49
    Muffler Assembly Screw F-5050 FS-95V

    Muffler Assembly Screw F-5050 FS-95V

    $10.94
    Piston Pin: FS72 Alpha

    Piston Pin: FS72 Alpha

    $10.86
    Rocker Cover: FS-120 III

    Rocker Cover: FS-120 III

    $21.10
    Screw Set (12): FS-91 Surpass
    2.5(2)

    Screw Set (12): FS-91 Surpass

    $17.08
    Throttle Lever Nut #2CK #2H
    4(1)

    Throttle Lever Nut #2CK #2H

    $6.49
    Valve Spring Intake: FS-120 Surpass

    Valve Spring Intake: FS-120 Surpass

    $6.49
    M10 In-Cowl Exhaust Header Pipe Side 60D: FS56A

    M10 In-Cowl Exhaust Header Pipe Side 60D: FS56A

    $42.23
    Muffler Extension: #744B
    4.7(3)

    Muffler Extension: #744B

    $19.05
    Plug Terminal: Sirius 7

    Plug Terminal: Sirius 7

    $10.94
    Cover Plate: FS81 Alpha

    Cover Plate: FS81 Alpha

    $17.16
    Crankcase: GT15HZ

    Crankcase: GT15HZ

    $190.29
    Crankcase: GT22

    Crankcase: GT22

    $97.70
    Crankshaft: GF30

    Crankshaft: GF30

    $148.62
    Crankshaft: GT22

    Crankshaft: GT22

    $125.57
    Crank Pin Stop Screw: GT33

    Crank Pin Stop Screw: GT33

    $10.94
    Cylinder Head: Sirius 7

    Cylinder Head: Sirius 7

    $97.71
    Cylinder Liner: 120 240

    Cylinder Liner: 120 240

    $52.57
    Cylinder Liner: GT15HZ

    Cylinder Liner: GT15HZ

    $105.05
    Drive Washer: 160FX

    Drive Washer: 160FX

    $27.29
    Front Housing: Sirius 7

    Front Housing: Sirius 7

    $519.74
    Gasket Carburetor: F61-300

    Gasket Carburetor: F61-300

    $6.49
    Gasket Head: FS-62V

    Gasket Head: FS-62V

    $6.49
    Head Gasket .4 Aluminum: Sirius 7

    Head Gasket .4 Aluminum: Sirius 7

    $6.49
    Cylinder Gasket: GT60

    Cylinder Gasket: GT60

    $7.46
    Intake Manifold: FS72 Alpha

    Intake Manifold: FS72 Alpha

    $24.23
    Mixture Control Valve #70C: FS120 Surpass II

    Mixture Control Valve #70C: FS120 Surpass II

    $22.26
    Muffler Fixing Screw E-4051: GT15HZ

    Muffler Fixing Screw E-4051: GT15HZ

    $11.80
    Muffler Extension: 120AX

    Muffler Extension: 120AX

    $26.24
    90 Degree Muffler Extension Screws (2): 120AX

    90 Degree Muffler Extension Screws (2): 120AX

    $6.49
    Needle #86 #8H

    Needle #86 #8H

    $13.78
    Pushrod Cover: FS-62V

    Pushrod Cover: FS-62V

    $14.84
    Rocker Arm Shaft: FS-95V

    Rocker Arm Shaft: FS-95V

    $6.49
    Cover Fitting Screw (4) FL-70

    Cover Fitting Screw (4) FL-70

    $4.99
    Main Shaft: 5025-375 .50

    Main Shaft: 5025-375 .50

    $8.99
    Motor Mount: OMA-50 Series

    Motor Mount: OMA-50 Series

    $19.99
    Propeller Shaft Set: 3805 3810

    Propeller Shaft Set: 3805 3810

    $27.99
    Needle Metering 21M: 21XZ-R VII

    Needle Metering 21M: 21XZ-R VII

    $17.99
    Back Plate Assembly O.S. Speed B21 Adam Drake Edition 3

    Back Plate Assembly O.S. Speed B21 Adam Drake Edition 3

    $41.99
    O.S. Carburetor 22E (B) Without Reducer Type R

    O.S. Carburetor 22E (B) Without Reducer Type R

    $162.83
    O.S. Cover Plate Speed B2103 Type R & Type S

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

    $25.40
    Crankcase: 21XZ-R Speed

    Crankcase: 21XZ-R Speed

    $157.24

    Clearance Sale!

    Crankshaft: 19XZ-B Speed

    Crankshaft: 19XZ-B Speed

    $52.61$175.75

    Clearance Sale!

    O.S. Cylindr & Piston Assy OS Speed R21GT

    O.S. Cylindr & Piston Assy OS Speed R21GT

    $232.21
    Outer Head O.S. Speed T1204

    Outer Head O.S. Speed T1204

    $89.99
    Carburetor Reducer 7.0MM AL2, Blue

    Carburetor Reducer 7.0MM AL2, Blue

    $20.05
    Carburetor 12D2: 12TG VII

    Carburetor 12D2: 12TG VII

    $135.44
    Carburetor 22B: 21XR-B

    Carburetor 22B: 21XR-B

    $119.78
    T-2090SC Tune Pipe Set: 21XZ-B, 21VZ-B, 25XZ, 30VG

    T-2090SC Tune Pipe Set: 21XZ-B, 21VZ-B, 25XZ, 30VG

    $217.45
    Connecting Rod: 30VG

    Connecting Rod: 30VG

    $27.48
    Crankshaft: 30VG

    Crankshaft: 30VG

    $52.99
    Cylinder/Piston/Rod: T1201 Speed

    Cylinder/Piston/Rod: T1201 Speed

    $193.94
    Outer Head: R21

    Outer Head: R21

    $96.84
    Inner Head: B2101 Speed

    Inner Head: B2101 Speed

    $57.96
    Screw Idle Speed WLA-2: GT55

    Screw Idle Speed WLA-2: GT55

    $23.99
    Slide Valve 12F2: 12XZ Speed Spec 3

    Slide Valve 12F2: 12XZ Speed Spec 3

    $33.61
    Starting Shaft: 30VG ES

    Starting Shaft: 30VG ES

    $22.30
    55HZ-R DRS Ringed .55 Helicopter Engine

    55HZ-R DRS Ringed .55 Helicopter Engine

    $510.44
    Inner Head: T1204 with O-Ring

    Inner Head: T1204 with O-Ring

    $39.26
    101/102 Elements (6)

    101/102 Elements (6)

    $13.83
    T-2090SC Tune Pipe: 21XZ-B, 21VZ-B, 25XZ, 30VG

    T-2090SC Tune Pipe: 21XZ-B, 21VZ-B, 25XZ, 30VG

    $173.43
    Connecting Rod with Retainers: Speed T1201

    Connecting Rod with Retainers: Speed T1201

    $44.17

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