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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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1,297-1,320 of 1,605 Results

Exhaust Pipe Nut: F40-300

Exhaust Pipe Nut: F40-300

$6.49

Gasket Set: 46AX

Gasket Set: 46AX

$11.80

Cover Plate Gasket: 35AX

Cover Plate Gasket: 35AX

$10.94

Gasket Carburetor: 120-240

Gasket Carburetor: 120-240

$6.49

Needle Adj Screw New: #60B

Needle Adj Screw New: #60B

$7.57

Piston Pin Retainer: 40PS

Piston Pin Retainer: 40PS

$6.49

Piston Pin: 55HZ Hyper

Piston Pin: 55HZ Hyper

$10.94

Piston Pin: FS-120

Piston Pin: FS-120

$14.73

Prop Nut: 61-120

Prop Nut: 61-120

$6.49

Pushrod: FS-62V

Pushrod: FS-62V

$11.99

Needle Assembly Screw: 65LA

Needle Assembly Screw: 65LA

$1.95 ~~Price reduced from $6.49 to~~

Clearance Sale! ⓘ

Head Gasket: 21TM

Head Gasket: 21TM

$9.74

Cylinder Piston Rod Set: O.S. Speed B2104

Cylinder Piston Rod Set: O.S. Speed B2104

$242.95

Carburetor Retainer: 21EX-B, R

Carburetor Retainer: 21EX-B, R

$11.87

Crankcase: 21XZ-B

Crankcase: 21XZ-B

$124.99

Cylinder Rebuild Kit: R2101 Speed

Cylinder Rebuild Kit: R2101 Speed

$232.21

Cylinder & Piston Speed: T1202

Cylinder & Piston Speed: T1202

$127.43

Outer Head: 19XZ-B Speed

Outer Head: 19XZ-B Speed

$102.20

Air Filter: INS

Air Filter: INS

$40.99

Carb Reducer 5.5mm: #11H, #11HB, 12TZ

Carb Reducer 5.5mm: #11H, #11HB, 12TZ

$11.80

Carburetor Body: 21J3

Carburetor Body: 21J3

$29.31 ~~Price reduced from $97.70 to~~

Clearance Sale! ⓘ

Carburetor Rotor: #11J

Carburetor Rotor: #11J

$29.60

Connecting Rod: Speed B2101, B2102

Connecting Rod: Speed B2101, B2102

$52.58

Crankcase: 21XZ-B Ver2

Crankcase: 21XZ-B Ver2

$124.95