O.S. Engines

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

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Piston Ring: FS155A-P

$38.03

Piston Ring: GT60

$30.44

Rocker Cover,, Black: FSa-72II

$7.65 ~~Price reduced from $25.51 to~~

Clearance Sale! ⓘ

Cap Screw 4x20mm (10): GT55

$11.80

Thrust Washer: 20-40FP

$7.99

Valve Exhaust: FS-52 Surpass

$19.14

Parallel Key: GT55

$7.46

Main Shaft: 3815-1000

$8.99

Pump Unit (PD-09): GF30 II

$109.26

Carburetor #20C: 32SX-H HX

$71.61

PowerBoost Pipe: 105HZ

$293.00

Long Spinner Nut 1/4"-28

$11.80

Crankshaft Bearing, Front: FS-91

$26.34

Front Bearing: 61FX

$22.16

Cam Follower: Sirius 7

$6.33 ~~Price reduced from $21.12 to~~

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Camshaft: FS-91 Surpass

$60.57

Carburetor Rotor: #40D

$11.80

Carburetor Rotor: 91SZ-H Hyper

$11.99 ~~Price reduced from $39.99 to~~

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Piston Pin: 56 FS

$11.91

Rear Adapter: 18CV-RX

$17.08

Cylinder and Piston Assembly: O.S. Speed B2104

$193.70

Induction Silencer .12/.21: INS

$46.39

Carburetor Body: 18TM

$46.31

Crankshaft: R2101 Speed

$59.79 ~~Price reduced from $199.31 to~~

Clearance Sale! ⓘ