O.S. Engines

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

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Crankcase: FS72 Alpha

$29.79 ~~Price reduced from $87.39 to~~

Clearance Sale! ⓘ

Cylinder & Piston Assembly: 75AX

$138.19

Cylinder Head: FS72 Alpha

$76.70

Drive Gear Screw: 240-300

$6.49

Drive Shaft Bearing: Sirius 7

$7.30 ~~Price reduced from $24.36 to~~

Clearance Sale! ⓘ

Drive Washer: 46AXII

$13.83

Drive Washer: FS72 Alpha

$19.05

Gasket Set: 91FX

$8.43

Link Pin E-Ring: Sirius 7

$6.49

Locknut Set: BGX 3500

$26.24

Needle Valve Assembly: 91SZ-H Hyper

$29.60

O-Ring Small #2K #2SB

$6.49

Pushrod Cover: FS155A-P

$10.94

Piston: FS-95V

$48.43

Piston: GGT10

$52.58

Piston Ring: 32FH

$26.24

Rotor Gear Screw: 30Wankel

$4.15 ~~Price reduced from $13.83 to~~

Clearance Sale! ⓘ

Screw Set (12): FS-40 Surpass

$9.44

Valve Assembly Exhaust: FS-52 Surpass

$22.26

Valve Collet: FS-120 Surpass

$10.86

Venturi: 15FP S

$9.85

Head Gasket: 21TM

$9.74

Cylinder Piston Rod Set: O.S. Speed B2104

$242.95

Cover Plate: O.S. Speed B2104

$10.50 ~~Price reduced from $28.35 to~~

Clearance Sale! ⓘ