O.S. Engines

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

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Screw Metering WLA-2: GT55

$5.99

Carburetor Retaining Screws: 2.6x18mm (10)

$9.85

Carburetor Body: #10H

$13.99

Carburetor Complete 21M4(B) W/O Reducer

$176.99

Header Pipe Spring

$11.80

Piston Pin: 55HZ Hyper

$10.94

Cylinder Head: GT15HZ

$32.41 ~~Price reduced from $108.03 to~~

Clearance Sale! ⓘ

Crankcase: Sirius 7

$432.78

Cover Plate: 46AXII

$11.80

Ratchet Spring #7H #7D #2K

$6.49

Gasket Passage: WLA-2, GT55

$11.99

Carburetor Screw: FS61-FT300

$6.49

Bubbleless Clunk

$21.04

Crankcase: 21XZ-R VII

$45.70 ~~Price reduced from $152.36 to~~

Clearance Sale! ⓘ

Screw Set (8): 12CV-X

$7.46

T-1060 Silencer Clamp

$11.47

Pan Head Screw 3x18mm (10)

$3.57 ~~Price reduced from $11.91 to~~

Clearance Sale! ⓘ

Piston: GT60

$45.74 ~~Price reduced from $152.45 to~~

Clearance Sale! ⓘ

RP8 Turbo Glow Plug, On-Road, Cold

$15.99

Prop Washer: 40-61

$6.49

Outer Head O.S. Speed B21 Adam Drake Edition 3

$97.99

Valve Exhaust: FS-52 Surpass

$19.14

Intake Cam: Sirius 7

$21.11 ~~Price reduced from $70.37 to~~

Clearance Sale! ⓘ

Carburetor Reducer 6.5mm, Red: B2101 Speed

$21.10