O.S. Engines

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

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Cover Plate: 21XZ-B Ver2

$6.61 ~~Price reduced from $22.04 to~~

Clearance Sale! ⓘ

Front Plate: Sirius 7

$140.04 ~~Price reduced from $346.53 to~~

Clearance Sale! ⓘ

Reed Valve Assembly: GT33

$26.99

Carburetor Gasket Set: WLA-2 (3)

$5.15 ~~Price reduced from $17.16 to~~

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Pushrod: FT-160

$9.44

Super Can Filter, Large

$14.99

Pan Head Screw +3.0X12 (10)

$9.53

Rocker Arm Assembly: 120 300

$32.56

Prop Spacer 120-300

$8.43

Piston Ring: 40SF

$26.24

Rotor Guide Screw: F90-300

$6.49

103 Air Cleaner Body

$10.99

Camshaft Gear: FR5-300

$44.13

Screw Set (8): 30VG

$9.85

Rear Adapter: 18TM

$19.05

Connecting Rod: 56 FS

$22.04

Cover Plate: FS72 Alpha

$5.15 ~~Price reduced from $17.16 to~~

Clearance Sale! ⓘ

Mixture Control Valve: 200 Surpass

$7.00 ~~Price reduced from $17.16 to~~

Clearance Sale! ⓘ

Crankcase: GT22

$97.70

Outer Head: Speed 21XZ-GT

$30.76 ~~Price reduced from $102.52 to~~

Clearance Sale! ⓘ

Mid Needle Valve Assebly: 61ER, 941HZ-R

$22.30

Muffler: E-2030, 20-25FP

$26.24

Carburetor Body: #60Y, FS110A

$42.11

90 Degree In-Cowl Header: FS110A

$36.85